Search

Lower extremity deep venous thrombosis (DVT) is estimated to occur in 1 in 1000 persons annually in adult populations, with prevalence predicted to double by the year 2050. While acute DVT and pulmonary embolism are a major cause of cardiovascular morbidity and mortality, the long-term prognosis for patients with venous thromboembolism is in part determined by the development of post-thrombotic syndrome (PTS), which occurs in up to 50% of patients. PTS refers to a chronic syndrome complex, invariably characterized by intractable edema, pain, stasis dermatitis, and venous stasis ulceration when severe., (Copyright © 2024 Elsevier Inc. All rights reserved.)

Vascular point-of-care ultrasound is a useful tool for emergency department (ED) clinicians to evaluate lower extremity pain and swelling. It can quickly and safely detect deep vein thrombosis, a serious condition that can lead to pulmonary embolism and post-thrombotic syndrome as well as diagnose pseudoaneurysm, hematoma, and acute arterial occlusion, a vascular emergency that requires urgent surgical intervention. Point-of-Care Ultrasound can be a useful tool for the evaluation of ED patients with vascular emergencies., Competing Interests: Disclosure M.K. Frederick has nothing to disclose. L.A. Stolz has done consulting work for Philips, Caption Health, GE, Butterfly and ThinkSono. P.E. Duran-Gehring has done consulting work for Caption Health., (Copyright © 2024 Elsevier Inc. All rights reserved.)

Objective: To explore the ultrasonographic features and influencing factors of free-floating thrombus (FFT) detachment in the lower extremity deep veins (LEDVs) of patients with fractures., Methods: Clinical data of patients diagnosed with FFT in the LEDVs and implanted with an inferior vena cava filter (IVCF) in our hospital between July 2021 and August 2023 were retrospectively analysed. The patients were divided into the thrombus detachment group (the experimental group, n = 92) and the non-thrombus detachment group (the control group, n = 103) based on the presence of detached thrombus in the IVCF. The effects of thrombus echogenicity, floating degree, thrombus location, thrombin time, D-dimer and fibrinogen on thrombus shedding were analysed. The nomogram method was used to establish the model and predict the probability of delayed postoperative recovery., Results: The proportions of patients with extremely hypoechoic thrombus and medium and high floating degrees increased in the experimental group compared with those in the control group, and the differences between the two groups were statistically significant (P < 0.05). Extremely hypoechoic thrombus (P = 0.021, 95 % CI: 1.109-13.748) and high (P = 0.001, 95 % CI: 3.854-28.573) and medium floating degrees (P = 0.004, 95 % CI: 1.792-13.453) were risk factors for deep veins FFT (DV FFT) detachment. The results of receiver operating characteristic curve analysis showed that the area under the curve of the model was 0.893, with a 95 % CI of 0.856-0.937, indicating a high prediction accuracy., Conclusion: Ultrasonographic parameters, including thrombus echogenicity and floating degree, are valuable in predicting DV FFT detachment in patients with traumatic fractures, providing references for IVCF implantation., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)

Objectives: To better understand the clinical and radiological characteristics of Cerebral Venous Thrombosis (CVT), we conducted a study focusing on the assessment of neurological outcomes and factors associated with poor prognosis in patients with CVT., Methods: This prospective, observational study took place over two years (July 2020 to June 2022) in a tertiary care teaching hospital in South India, encompassing adults aged 18 years and over. Key data points included demographic information, symptomatology, physical and neurological examinations, neuroimaging findings, hospital interventions, and neurological outcomes at discharge and at a six-week telephonic follow-up., Results: A total of 140 patients with CVT, median age 34 years, were studied. 61.4 % were males. The most common symptoms and signs were headaches (70.7 %) and papilledema (60.7 %). Hemorrhagic infarct was the most prevalent finding on the non-contrast computed tomography (NCCT) of the brain, involving 39.4 % of patients. The most commonly affected sinus was the superior sagittal sinus. Risk factors most often observed were alcoholism (45 %), smoking (21.4 %), anemia (27.1 %), oral contraceptive pill usage (12.1 %), and hypertension (12.1 %). Deep vein thrombosis or pulmonary embolism was present in 5 % of the patients. The mean hospital stay was 13.9 days, with 6.4 % of patients requiring endotracheal intubation at presentation and 22.9 % during their stay. The observed in-hospital mortality rate was 17.9 %, increasing to 22.4 % at the six-week follow-up. Morbidity (mRS 3-5) was 24.3 % at discharge, decreasing to 8.2 % at six-week follow-up. Favorable outcomes were reported in 57.9 % of cases at discharge, rising to 69.4 % at six weeks., Conclusions: Our study underscores the importance of recognizing cardinal symptoms and diverse risk factors of CVT, including alcoholism and anemia. Majority of CVT occurrences were observed in males aged 18-29. Critical determinants of heightened morbidity and mortality were identified, including lower GCS scores and the necessity for advanced interventions. Notably, majority of patients presented favorable neurological outcomes at six-week follow-up., Competing Interests: Declaration of competing interest None., (Copyright © 2024 Elsevier Inc. All rights reserved.)

Ovarian vein thrombosis (OVT) is a rare but potentially serious condition. We conducted a scoping review of published data to provide a better understanding of OVT management. MEDLINE and Cochrane databases were searched. The eligibility criterion was original articles including women with OVT until May 2024. Quantitative data were pooled via Comprehensive Meta-Analysis software (Biostat, Inc). Quality of the primary studies was assessed via the Newcastle‒Ottawa Scale. Out of 1007 identified records, 19 primary studies including 1128 patients were selected. Mean age at OVT diagnosis was 37 years old. Frequency of OVT depended on the clinical situation: cancer (37%) and postpartum (0.06%), including cesarean (0.19%), or persistent fever despite antibiotics (23%). Magnetic resonance imaging was associated with the best diagnostic performance, followed by computed tomography. Pulmonary embolism and extension to the iliac vein, inferior vena cava, or left renal vein occurred in 6.5%, 5.9%, 10.3%, and 9.6% of patients, respectively. Among anticoagulants, low-molecular-height heparin with/without oral anticoagulant was preferred for 3 to 6 months. Among the women tested, thrombophilia was present in 18% of the patients. Recanalization, recurrent thrombosis, or major bleeding occurred in 70%, 8%, and 2% of patients, respectively. The majority of studies had poor evidence. This scoping review provides a comprehensive evaluation of available data. Frequency of OVT depends on the clinical setting. Physicians should be aware of OVT in postpartum women with persistent fever despite the use of antibiotics. OVT belongs to the spectrum of venous thromboembolism and should be considered both in puerperal settings and in cancer patients., Competing Interests: Declaration of competing interests There are no competing interests to disclose., (Copyright © 2024 International Society on Thrombosis and Haemostasis. Published by Elsevier Inc. All rights reserved.)

Background: Although there are reports on the recurrence prevention in the chronic phase using direct oral anticoagulants (DOACs) for deep vein thrombosis (DVT) in patients with cancer, acute thrombus regression effect using DOACs has not been assessed. This study aimed to assess the thrombus regression effect of initial treatment using edoxaban for acute lower-extremity DVT in patients with active cancer., Methods and Results: In this observational study, among the inpatients with cancer and lower-extremity DVT who underwent initial treatment with edoxaban at our hospital from November 2019 to December 2021, 34 consenting patients were recruited in this study. The quantitative ultrasound thrombus (QUT) score of thrombus volume was calculated at baseline (before administration) and 7-14 days after the start of edoxaban administration, using lower-extremity venous ultrasound to evaluate changes in thrombus volume. The primary and secondary endpoints were the acute thrombus regression effect of edoxaban and the impact of patients' clinical frailty on the thrombus regression effect, respectively. Anticoagulant therapy with edoxaban significantly reduced QUT score (p < 0.001). In addition, regardless of the Clinical Frailty Scale scores, QUT score decreased significantly., Conclusion: Initial treatment with edoxaban was effective for lower-extremity DVT in patients with cancer. In addition, the effect was the same independent of the degree of frailty., (© 2024. Springer Nature Japan KK, part of Springer Nature.)

Acute limb ischemia (ALI) is the sudden onset of decreased blood supply to the extremities and carries a poor prognosis for the affected limb and survival. A rare but well-recognized embolic etiology is a paradoxical embolism, the translocation of a thrombus from venous to arterial circulation through an intracardiac communication, most commonly a patent foramen ovale. The presentation of ALI secondary to a PFO-mediated paradoxical embolism is most often accompanied by combinations of deep vein thrombosis (DVT), pulmonary embolism (PE), and an acute cerebral or visceral ischemia. We present the first documented case of a Rutherford class I ALI secondary to a PFO-mediated paradoxical embolism, ipsilateral DVT, and PE in a 29-year-old female who was surgically managed for her disabling claudication rather than limb salvage. The overlapping presentation of a viable ALI and ipsilateral DVT created a challenging clinical diagnosis. Our review of the literature on PFO-mediated paradoxical emboli involved 43 reports including 51 patients with various arterial thromboses; 19 of these cases involved lower extremity ALI. This case report is the first case to date that demonstrates a paradoxical embolism causing acute lower extremity ischemia with ipsilateral DVT and no additional limb/visceral ischemia to suggest the diagnosis of ALI. We also highlight the role that quality of life plays in vascular surgical decision-making, extending ALI management goals to not only reducing mortality and major amputations, but also improving quality of life., Competing Interests: Declaration of Conflicting InterestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

Objective: To examine the efficacy of antegrade and retrograde approaches with the AngioJet thrombectomy device for the treatment of acute lower limb deep vein thrombosis (DVT) and to evaluate the necessity of filter placement., Methods: The clinical data of patients with acute lower limb DVT treated with the AngioJet device from January 2021 to June 2023 were retrospectively analyzed. The patients were divided into the antegrade and retrograde treatment groups according to the surgical approach and the direction of valve opening. The thrombosis interception rate of the filter, incidence of pulmonary embolism (PE), thrombectomy effectiveness, venous obstruction rate, and thrombosis recurrence rate of each treatment group were evaluated. In addition, factors affecting patency were analyzed., Results: AngioJet was employed for 84 patients with acute lower limb DVT, treating a total of 88 limbs. The thrombosis interception rate of the filter was 35.7% (30 patients). The incidence of new PE or PE exacerbation was 6.0% (5 patients), and a filter retrieval rate of 97.6% (82 patients) was detected. Thrombus removal of grade III occurred in 35 (64.8%) of the 54 limbs (61.4%) in the antegrade treatment group versus 13 (38.2%) of the 34 limbs (38.6%) in the retrograde treatment group (P < 0.05). At 3 months, venous patency and bleeding events involved 52 (96.3%) and 4 (7.4%) limbs in the antegrade treatment group, respectively, versus 29 (85.3%) and 2 (5.9%) in the retrograde treatment group, respectively (P > 0.05). Regression analysis was performed to determine factors that may affect 3-month patency in both groups. Statistically significant linear relationships were found between 3-month patency and thrombus removal rate [odds ratio [OR] = 0.546 (0.326, 0.916)], thrombus formation time [OR = 1.018 (1.002, 1.036)], and preoperative thrombosis score [OR = 1.012 (1.002, 1.022)] in the antegrade treatment group, as well as thrombus removal rate [0.473 (0.229, 0.977)] in the retrograde treatment group. In regression analysis of factors affecting patency in both groups and the venous clinical severity score/Villalta score, a statistically significant linear relationship was found between thrombus formation time and the venous clinical severity score in the antegrade treatment group [0.576 (0.467, 0.710)]., Conclusions: Both antegrade and retrograde approaches are safe and effective for the treatment of acute lower limb DVT. There are no differences in 3-month deep vein patency and post-thrombotic syndrome (PTS) incidence rates. Individuals with acute lower limb DVT are at high risk of thrombus shedding after treatment with AngioJet thrombectomy, and placement of a vena cava filter (VCF) is recommended for effective interception., (Copyright © 2024 Elsevier Inc. All rights reserved.)

Objective: Venous aneurysms are rare vascular abnormalities associated with venous thromboembolism. In this study, we presented our experience in managing thrombosed lower extremity venous aneurysms and evaluate the impact of vitamin D deficiency and genetic thrombophilic risk factors on patient management and outcomes., Methods: A single-center retrospective observational analysis was conducted on ten patients with thrombosed lower limb venous aneurysms who underwent surgical procedures at our hospital from July 2014 to February 2023. Collected data included venous duplex ultrasonographic imaging and laboratory tests including genetic thrombophilic risk factors and assessments of vitamin D levels., Results: There were 5 males and 5 females. The mean age was 46.6 ± 12.1 years. The aneurysms were located in the popliteal vein in three patients, the great saphenous vein in six, and the small saphenous vein in one. Venous duplex imaging revealed saccular aneurysms in eight patients and fusiform aneurysms in two, with a mean diameter of 37.2 ± 10.6 mm, ranging from 23 to 52 mm. Laboratory tests indicated vitamin D deficiency in all of the patients, and genetic thrombophilic risk factors were identified in two cases. Surgical interventions consisted of tangential excision with lateral venorrhaphy in three patients and total excision and ligation in seven patients. The postoperative period was favorable for all patients., Conclusions: Surgical treatment of thrombosed venous aneurysms in the lower extremities is essential to prevent complications such as thromboembolism. A comprehensive approach, including knowledge of genetic risk factors and vitamin D levels, may improve patient outcomes., Competing Interests: Declaration of Conflicting InterestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

The prevalence of concomitant deep vein thrombosis (DVT) and its impact on 30-day outcomes in Hispanic patients with acute pulmonary embolism (PE) is unknown. We retrospectively studied a cohort of Hispanic patients admitted for acute PE to determine the relationship of concomitant DVT to clot burden on chest computer tomography (CT), right heart strain, and 30-day mortality. We identified 391 patients admitted with acute PE; 168 (42.9%) had concomitant DVTs on admission; 39 patients (9.9%) died during the 30-day follow-up: 12 patients without concomitant DVT and 27 with concomitant DVT, respectively ( p < .001). The presence of a proximal DVT independently predicted 30-day mortality even after adjusting for age, gender and admission PE severity index scores (PESI) (hazard ratio [HR] 2.0; 95% confidence interval [CI]: 1.4-3.0, p = .001). Proximal DVTs remained a significant predictor of 30-day mortality in patients with low and intermediate PESI scores (HR 2.5; 95% CI: 1.1-6.0, p = .035). The prevalence of concomitant DVT in Hispanic patients presenting with acute DVT is relatively lower than other ethnic groups. However, a proximal location of a DVT is of significant prognostic relevance. Hispanic patients with acute PE should routinely undergo compression doppler ultrasonography (CDUS) of the lower extremities., Competing Interests: Declaration of Conflicting InterestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

Objective: The aim of this study was to assess the utilization of surgical interventions in patients diagnosed with superficial vein thrombosis (SVT) and its potential association with the occurrence of venous thromboembolism (VTE) and bleeding events., Methods: INSIGHTS-SVT, a prospective, non-interventional, multicenter study in Germany, investigated the management and outcomes of patients with acute SVT who received conservative and/or invasive treatments at the discretion of the treating physician., Results: Among the 872 patients with 12-month data, 657 had medical therapy only, and 215 patients underwent vascular surgery (70 within 3 months of SVT diagnosis, 136 between months 4 and 12, and nine had an intervention in both periods). The most commonly performed procedures included endovenous thermal ablation, ligation of the saphenofemoral or saphenopopliteal junction, and vein stripping. The primary outcome of symptomatic VTE was observed in 5.8% of conservatively treated patients and 6.3% of those who underwent surgical intervention. Additionally, the secondary outcome of recurrent or extended SVT was documented in 4.7% of conservatively treated patients and 5.3% of invasively treated patients. Bleeding events occurred in 1.4% of conservatively treated patients and 2.1% of surgically treated patients. These differences were statistically not significant. Furthermore, our analysis indicated a potential protective effect associated with surgical treatments, such as ligation of the saphenofemoral or saphenopopliteal junction, stripping and endovenous thermal ablation, concerning the endpoint of VTE for patients when applied after 3 months from the index SVT event., Conclusions: In line with previous research, our study suggests that surgical interventions are not frequently employed in the management of SVT, although they may be warranted in select cases. Nevertheless, additional research is essential to gain a deeper understanding of the indications, criteria, and benefit of surgical interventions in the treatment of SVT., Competing Interests: Disclosures E.R. has received honoraria for lectures and advisory boards from Bayer, Boehringer Ingelheim, Daiichi-Sankyo, Leo Pharma, and Pfizer. R.B. has received research support from AFNET, CPC, and FADOI; and honoraria from Bayer, BMS, Leo, Pfizer, and Viatris. H.G. has received honoraria for lectures and advisory boards from Aspen, Mylan, Bayer, and Boehringer-Ingelheim. D.P. has received honoraria for consultancy, advisory boards, or lectures by Actelion, Bayer, Biogen, Aspen, Amgen, MSD, Boehringer Ingelheim, Novartis, Daiichi Sankyo, Genzyme, and Zambon. F.L. has received honoraria for lectures or consultancy from Aspen, Bayer, Bristol-Myers Squibb, Daiichi Sankyo, LEO Pharma, Pfizer, Sanofi, and Viatris. U.H. has received research support and honoraria for lectures and advisory boards from Bayer HealthCare Pharmaceuticals, Bristol-Myers-Squibb, Pfizer, Boehringer Ingelheim, Daiichi Sankyo, Leo Pharma, and Aspen. T.N. has received honoraria for consultancy from Medi Bayreuth; and honoraria for presentations from Aspen, Bayer, Bristol-Myers Squibb, and Mylan. A.H. was, at the time of the study, a full-time employee of Aspen Pharma GmbH, Munich, and is now an employee of Amgen GmbH, Germany. A.S. is a full-time employee of Mylan Germany GmbH, Germany., (Copyright © 2024 The Author(s). Published by Elsevier Inc. All rights reserved.)

Tumor imaging represents an ideal environment for collecting novel biomarkers from different technologies, as patients with tumors often undergo multiple imaging studies.With the aging of the Chinese population, the number of elderly patients with gastric cancer is also increasing. In the past, patients with gastric cancer in the elderly have been conservative in whether surgical treatment can be performed, and advanced age is regarded as a relative contraindication to the effect of surgical treatment on gastric cancer patients. To investigate the clinical characteristics of patients with upper gastrointestinal hemorrhage complicated by deep vein thrombosis in elderly patients with gastric cancer. One patient with upper gastrointestinal hemorrhage complicated by deep venous thrombosis, and elderly gastric cancer patients admitted to our hospital on 11 October 2020, were selected. After anti-shock symptomatic support, filter placement, prevention and treatment of thrombosis, gastric cancer eradication, anticoagulation, immune regulation, etc. Treatment and long-term follow-up observation. Long-term follow-up showed that the patient's condition was stable, there was no sign of metastasis or recurrence after radical gastrectomy for gastric cancer, and there were no serious pre- and post-operative complications such as upper gastrointestinal bleeding and deep vein thrombosis, and the prognosis was satisfactory. How to choose the appropriate operation timing and method for elderly gastric cancer patients with upper gastrointestinal bleeding and deep vein thrombosis at the same time to maximize benefits, clinical experience in this area is particularly valuable.

Retrograde cerebral venous thrombosis (CVT) is a rare complication following internal jugular vein (IJV) ligation. The patient described in this report is a male in his 30s with locally advanced carcinoma tongue. He underwent near-total glossectomy and bilateral neck dissection. Due to heavy nodal burden, his right IJV had to be sacrificed. The patient presented with features of raised intracranial pressure (ICP) postoperatively. Magnetic resonance venogram of the brain revealed CVT involving sigmoid and transverse sinus. This case report describes a perplexing case of right-sided IJV ligation giving rise to CVT, resulting in raised ICP. Although the contralateral cerebral venous system was found to be normal, it failed to compensate for the obstructed outflow on the affected side. In this case report, we have elucidated the possible mechanism for the development of raised ICP and described the management in the light of existing evidence., Competing Interests: Competing interests: None declared., (© BMJ Publishing Group Limited 2024. No commercial re-use. See rights and permissions. Published by BMJ.)

Introduction: Cerebral venous thrombosis (CVT) is an uncommon and clinically heterogeneous cerebrovascular particularly in children, only a few published case series focused in the pediatric population., Patients and Methods: Retrospective single-center observational and analytical study of consecutive pediatric patients admitted in a level II Portuguese hospital with a confirmed diagnosis of CVT, from 2003 to 2021. Clinical presentation, neuroimaging findings, prothrombotic factors, treatment strategies, outcome and recanalization were documented., Results: Twelve children were included (58% female). Mean age was 7.3 years. The most frequent symptoms were vomiting, headache and behavioral alterations. Infection was the triggering factor in 50% of the cases. The diagnosis of CVT was made based on imaging evidence of thrombosis through magnetic imaging resonance (MRI) with venography and/or computed tomography (CT) with venography. In 67% of cases there were multiples sinuses involved; the transverse sinus was the most affected, followed by the sigmoid sinus. In 83% of cases anticoagulant therapy was initiated with low molecular weight heparin (LMWH) and associated prothrombotic factors were investigated, with no major prothrombotic factors identified. No deaths occurred, but 30% had long-term neurological sequelae. One patient recurred 18 years later., Conclusion: The results of this study are consistent with data from other published studies. MRI is the preferred imaging method for diagnosis in children by avoiding ionizing radiation and allowing identification of subjacent causes. Anticoagulation with LMWH is recommended and important to reduce mortality and sequelae. Infectious diseases are the most common trigger for CVT and can also be the cause for high morbidity and poor outcomes., (Copyright © 2022 Sociedad Española de Neurología. Published by Elsevier España, S.L.U. All rights reserved.)

Background: Deep vein thrombosis (DVT) is a common and serious risk in elderly patients with knee osteoarthritis (OA), making preoperative detection crucial. Despite this, identifying OA patients at high risk for preoperative DVT and appropriately targeting them for venous ultrasound screening remains a challenge. There is limited research-based evidence on the risk factors for preoperative DVT in elderly patients with end-stage OA. We examined the incidence of and risk factors for preoperative DVT in elderly patients with end-stage OA scheduled for total knee arthroplasty., Methods: We retrospectively analyzed the demographic data (age, sex, body mass index, current smoking, alcohol consumption, walking status, and Barthel index score), medical history, and laboratory test indices of 1411 patients with end-stage OA aged ≥ 60 years scheduled for total knee arthroplasty from January 2015 to December 2018. Risk factors for preoperative DVT were evaluated by univariate and multivariate logistic analyses. Receiver operating characteristic analysis was performed to determine optimal cut-off values., Results: The incidence of preoperative DVT was 4.5% (63 of 1411 patients). Seven independent risk factors were correlated with preoperative DVT in the multivariate logistic regression: age (odds ratio [OR], 1.073; P = 0.002), D-dimer concentration (OR, 1.173; P = 0.003), hyperlipidemia (OR, 2.038; P = 0.045), atrial fibrillation (OR, 4.004; P = 0.033), chronic renal failure (OR, 6.732; P = 0.008), chronic obstructive pulmonary disease (COPD) (OR, 8.721; P = 0.001), and walking status (wheelchair) (OR, 2.697; P = 0.002). The optimal cut-off values for predicting preoperative DVT were 0.585 µg/mL for the D-dimer concentration (area under the curve [AUC], 0.769; P < 0.001) and 72.5 years for age (AUC, 0.668; P < 0.001)., Conclusion: Among elderly patients with end-stage OA, venous ultrasonography to rule out DVT risk should be prioritized in those with a high D-dimer concentration (> 0.585 µg/mL), high age (> 72.5 years), hyperlipidemia, atrial fibrillation, chronic renal failure, COPD, and walking status (wheelchair)., (© 2024. The Author(s).)

Background: Caprini score and D-dimer are well-recognized markers in deep vein thrombosis (DVT) assessment. However, their utility in guiding post-arthroplasty DVT risk is hampered by susceptibility to various post-operative factors, limiting their effectiveness as reminders. Conversely, these markers exhibit greater stability in the pre-operative setting. Despite this, research on the pre-operative predictive value of Caprini score and D-dimer for DVT following primary total knee arthroplasty (TKA) remains scarce., Methods: In a retrospective study, we analyzed data from patients who underwent primary TKA, between August 2015 and December 2022. Upon admission, Caprini scores were assessed, and comprehensive blood panels were obtained from fasting blood samples. For all patients, lower limb vascular Doppler ultrasonography was performed pre-operatively to exclude those with pre-existing DVT, and all patients underwent DVT examination again post-operatively., Results: Our study included 2,873 patients, averaging 67.98 ± 7.54years, including 676 men and 2,197 women. In this study, 303 (10.55%) patients developed postoperative DVT, and 57 (1.98%) cases presented with lower limb symptoms. DVT incidence in patients with pre-operative Caprini scores of 1-2 (6.50%), 3 (10.28%), and ≥ 4 (18.05%) showed significant differences (P < 0.05). DVT rates were 14.80% in patients with pre-operative D-dimer levels of ≥ 1 mg/L, higher than the 8.98% in those with levels of < 0.5 mg/L, and 10.61% in those with levels 0.5-1 mg/L (P < 0.05). In patients with Caprini scores of 1-2 and D-dimer levels ≤ 0.5 mg/L, the occurrence rate of postoperative DVT was only 5.84%. For patients with Caprini scores ≥ 4 and D-dimer levels ≥ 1.0 mg/L, the postoperative DVT occurrence rate soared to 24.81%, with the OR(odds ratio) was 4.744 compared to the former group., Conclusion: Patients with preoperative higher Caprini scores and D-dimer are more likely to develop DVT after TKA. Additionally, those with a preoperative Caprini score ≥ 4 and D-dimer level ≥ 1.0 mg/L have a significantly increased risk (24.81%) of developing DVT, identifying them as a high-risk group for DVT following TKA. These findings hold significant value for DVT risk stratification in primary TKA patients and the formulation of preoperative interventions to mitigate the risk of DVT., (© 2024. The Author(s).)

Lumboperitoneal shunt (LPS) has been an effective treatment of idiopathic normal pressure hydrocephalus (iNPH) but sometimes causes serious complications. Here we present the first reported case of cerebral venous thrombosis (CVT) after LPS. A 76-year-old man underwent LPS for iNPH and a week later developed weakness of the right arm and a generalized tonic-clonic seizure. Brain computed tomography and magnetic resonance imaging showed bilateral subdural hematoma (SDH) and left cortical vein thrombosis. Intravenous heparin was administered, followed by surgical evacuation of the SDH. The patient experienced gradual improvement and was subsequently discharged. It is conceivable that overdrainage of cerebrospinal fluid led to the development of both SDH and CVT. CVT is potentially fatal and should be recognized early as a possible complication after LPS to allow prompt treatment., (Copyright © 2024 Elsevier B.V. All rights reserved.)

Rationale and Objectives: Transarterial chemoembolization (TACE) plus molecular targeted therapies has emerged as the main approach for treating hepatocellular carcinoma (HCC) with portal vein tumor thrombus (PVTT). A robust model for outcome prediction and risk stratification of recommended TACE plus molecular targeted therapies candidates is lacking. We aimed to develop an easy-to-use tool specifically for these patients., Methods: A retrospective analysis was conducted on 384 patients with HCC and PVTT who underwent TACE plus molecular targeted therapies at 16 different institutions. We developed and validated a new prognostic score which called ABPS score. Additionally, an external validation was performed on data from 200 patients enrolled in a prospective cohort study., Results: The ABPS score (ranging from 0 to 3 scores), which involves only Albumin-bilirubin (ALBI, grade 1: 0 score; grade 2: 1 score), PVTT(I-II type: 0 score; III-IV type: 1 score), and systemic-immune inflammation index (SII,<550 × 10 12 : 0 score; ≥550 × 10 12 : 1 score). Patients were categorized into three risk groups based on their ABPS score: ABPS-A, B, and C (scored 0, 1-2, and 3, respectively). The concordance index (C-index) of the ABPS scoring system was calculated to be 0.802, significantly outperforming the HAP score (0.758), 6-12 (0.712), Up to 7 (0.683), and ALBI (0.595) scoring systems (all P < 0.05). These research findings were further validated in the external validation cohorts., Conclusion: The ABPS score demonstrated a strong association with survival outcomes and radiological response in patients undergoing TACE plus molecular targeted therapy for HCC with PVTT. The ABPS scoring system could serve as a valuable tool to guide treatment selection for these patients., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Association of University Radiologists. Published by Elsevier Inc. All rights reserved.)

Objectives: To evaluate common femoral vein thickness (CFVT) as a diagnostic tool in Brazilian patients with Behçet's disease (BD) and to analyse associations between increased CFVT and disease features., Methods: A cross-sectional study was performed including 100 BD patients and 100 controls. The CFVT and the diameters of great saphenous vein (GSV), and small saphenous vein (SSV) were measured by Doppler ultrasound., Results: BD patients had higher right CFVT [0.600mm (0.500-0.700) vs. 0.525mm (0.450-0.637); p=0.012] and left CFVT [0.550mm (0.450-0.650) vs. 0.500mm (0.450-0.550); p=0.004] compared to controls. Vascular involvement of BD and previous deep venous thrombosis were associated with increased CFVT (p<0.05). The number of vascular events correlated with right and left CFVT (Rho = 0.475 p=0.030 and Rho = 0.429 p=0.052, respectively). The 0.575mm cut-off point of right and left CFVT had area under the curve (AUC) of 0.602; 95% confidence interval (95% CI): 0.524-0.680 and AUC: 0.615; 95% CI: 0.537-0.693, respectively. The right and left CFVT had a sensitivity for BD diagnosis of 52% and 43%, and a specificity of 64% and 77%, respectively. No significant differences were found between BD patients and controls regarding the GSV and SSV diameters in both legs (p>0.05)., Conclusions: In this study, CFVT measurement was not shown to be a reliable diagnostic test for BD. CFVT was increased in BD patients presenting vascular involvement and correlated with the number of previous events.

Objective: To review the current approaches to the diagnosis of Post-Thrombotic Syndrome (PTS) and to evaluate the potential need for a diagnostic tool., Method: Medical specialists were invited to participate in an online survey of their current approaches to the diagnosis and management of PTS, including the use of scoring systems, diagnostic imaging techniques and the extent the practitioner reviews the patient's venous history., Results: 502 participants completed the survey. Over 80% obtained imaging reports to confirm a history of deep vein thrombosis (DVT). 72% of participants always obtained an up-to-date duplex ultrasound for PTS diagnosis. Over 50% did not use a scoring system for either PTS diagnosis or management. 65% of the participants agreed that a new system for PTS diagnosis should be devised., Conclusion: Heterogeneity was observed in methods of diagnosing PTS by medical practitioners with frequent use of medical imaging studies and moderate use of scoring systems. Development of a new diagnostic tool for PTS should be considered for future studies., Competing Interests: Declaration of conflicting interestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

Rationale and Objectives: This study aimed to investigate the relationship between minimum inferior vena cava (IVC) diameter magnification percentage and in-situ IVC thrombosis (iIVCT) after inferior vena cava filter (IVCF) placement in lower extremity deep vein thrombosis (LEDVT)., Methods: This was a single center retrospective study. Study sample consisted of patients with LEDVT who received computed tomography venography of IVC both before and after IVCF placement between January 2019 and October 2023. A propensity score matching (PSM) was also used in covariates including age, hypertension, and thrombus limbs. Multivariate Cox regression analyses were performed to mitigate the impact of selection bias and control for potential confounding variables. The incremental changes associated with minimum IVC diameter magnification percentage and iIVCT were evaluated with restricted cubic spines (RCS)., Results: 113 LEDVT patients (age 58.8 ± 17.8 years, 57.5% male) were included. Multivariate Cox regression analyses revealed a significant positive association between the minimum IVC diameter magnification percentage and the incidence of iIVCT after adjusting for the age, hypertension, and thrombus limbs (adjusted hazard risk [HR] = 1.02, 95% CI, 1.01 to 1.02, p < .001), suggesting minimum IVC diameter magnification percentage was an independent risk factor for iIVCT. Moreover, after using PSM, the association remained significant (HR=1.01, 95% CI, 1.01 to 1.02, p < .001). RCS analysis showed a non-linear dose-response association (s-shaped fitting curve) between minimum IVC diameter magnification percentage and iIVCT risk (nonlinear p = .041). The fitting curve indicated a threshold effect (overall p = .005), with a smaller magnification percentage being negatively associated with the incidence of iIVCT, presenting continuously decreasing HR at levels of magnification percentage < 37.3%., Conclusion: A decreasing minimum IVC diameter magnification percentage is consistently associated with a decreasing risk of iIVCT following IVCF placement when the percentage is < 37.3%, indicating that it is a protective factor against iIVCT incidence. WHAT THIS PAPER ADDS?: This single-center retrospective study, which designed to investigate the relationship between minimum inferior vena cava diameter magnification percentage and in-situ inferior vena cava thrombosis (iIVCT) following inferior vena cava filter (IVCF) placement in lower extremity deep vein thrombosis in 113 patients, demonstrated that decreasing minimum IVC diameter magnification percentage is consistently associated with a decreasing risk of iIVCT following IVCF placement when the percentage is < 37.3%, indicating that it is a protective factor against iIVCT incidence., Competing Interests: Declaration of Competing Interest The authors of this manuscript declare no relationships with any companies, whose products or services may be related to the subject matter of the article. The content of the manuscript is original, and it has not been published or accepted for publication., (Copyright © 2024 The Association of University Radiologists. Published by Elsevier Inc. All rights reserved.)

Hyperventilation-induced intracranial pressure reduction might be impaired in cerebral venous thrombosis (CVT) patients. Using transcranial Doppler, we assessed carbon dioxide-vasomotor reactivity (CO 2 -VMR) within 24 hours of admission in CVT patients and studied its correlation with patient outcomes. Adult moderate-severe CVT patients (participants of another large observational study) were included. CO 2 -VMR was calculated as the percentage change in peak flow velocities during maximal hypercapnia and hypocapnia. Outcome was assessed with the modified Rankin scale (mRS) at one - month post-discharge, dichotomized into favourable (mRS≤2) and unfavourable (mRS>2). Twenty patients' data was analysed. Impaired CO 2 -VMR (<70 %) was observed in 13 patients in the affected hemisphere; among them, 10 had impairments in both hemispheres. CO 2 -VMR correlated negatively with mRS (Rho = -0.688, p = 0.001). Odds for unfavourable outcomes were reduced by 92 % in patients with intact VMR on the ipsilateral hemisphere (Odds ratio (OR) 0.08, Confidence interval (CI) 0.006---0.636, p = 0.027) and by 94 % with VMR intact on the contralateral hemisphere (OR 0.063, CI 0.003---0.569, p = 0.03). Thus, impaired CO 2 -VMR in moderate to severe CVT patients is associated with unfavourable outcomes, and has the potential to prognosticate CVT patients objectively., Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: The study received research grant from the Indian council of medical research (ICMR) with registration number MD21DEC-0053. The funder had no role in the design, data collection, data analysis, and reporting of this study., (Copyright © 2024 Elsevier Ltd. All rights reserved.)

Objectives: Strain-gauge venous occlusion plethysmography (SGVOP) is a means of acquiring hemodynamic data non-invasively, unlike other methods used routinely for the diagnosis and follow-up of venous diseases. The present study compares the plethysmographic data with early- and mid-term routine data of patients with acute deep-vein thrombosis (DVT) who underwent pharmacomechanical thrombolysis., Patients and Method: Included in this retrospective study were 118 patients with acute DVT, who underwent pharmacomechanical thrombolysis between February 2018 and July 2019. Pre- and post-procedure follow-up data including CIVIQ-20 (quality of life), VCSS (Venous Clinical Severity Score), D-Dimer, Doppler USG results, venous capacity (VC), and venous outflow (VO) obtained by SGVOP were recorded and compared., Results: In all 118 (100%) patients who underwent the procedure, early- and mid-term patency was seen to have been provided on Doppler USG follow-up, and various degrees of venous insufficiency were identified. A statistically significant improvement was observed in VCSS, CIVIQ-20, D-Dimer, VO, and VC measurements, although when the discrepancies between CIVIQ-20 and plethysmographic measurements were examined individually during the 6-month follow-up, nine (13.1%) patients were identified with comorbidities., Conclusions: Pharmacomechanical thrombolysis is an effective treatment approach for patients with acute DVT. Providing non-invasive objective data supporting the diagnosis and follow-up of venous diseases, the SGVOP approach offers significant benefits and should be considered more frequently as a viable therapy., Competing Interests: Declaration of Conflicting InterestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

Aims: Iliocaval venous tumor thrombus is a morbid condition associated with chronic venous stasis, lower extremity edema/pain, extensive thrombus burden and high mortality secondary to critical flow obstruction, intracardiac thrombus extension and tumor embolization. Typically resistant to medical therapy, management is primarily surgical, presenting challenges for medically complex patients with widespread or end-stage disease. Mechanical or aspiration thrombectomy represents an appealing treatment strategy but data are lacking., Materials and Methods: We performed a single-center, 10-year, retrospective review of patients with pathology-confirmed, iliocaval tumor thrombus who underwent thrombectomy. 14 patients met inclusion criteria and were managed by 18 procedures over this period., Results: The most common malignancy was renal-cell carcinoma (n=7; 50%); other types included germ cell (n=2; 14%), other genitourinary (n=2; 14%), neuroendocrine (n=1; 7%), soft tissue (n=1; 7%), and skin cell malignancies (n=1; 7%). All patients had thrombus involving the distal inferior venous cava (IVC), 50% had bilateral iliac involvement and 29% atrial involvement. Common indications were venous obstruction symptoms (n=11; 65%) and evidence of embolism (n=6; 35%). All patients tolerated the procedures without acute complication. The technical success rate was 94%, with marked improvement of flow and reduction in thrombus burden, and 79% had subjective symptomatic improvement. All patients survived for >2 weeks and 50% had long-term survival of >1 year, with 86% of these patients having renal-cell carcinoma (RCC). Three patients underwent multiple thrombectomies within days to weeks, with ultimate symptomatic improvement., Conclusions: Overall, our study results suggest mechanical or aspiration thrombectomy as a safe and efficacious treatment for patients with iliocaval tumor thrombus., (Copyright © 2024 The Royal College of Radiologists. Published by Elsevier Ltd. All rights reserved.)

Portal vein aneurysm is a rare vascular disorder, particularly in the pediatric population, with relatively few cases reported in the literature. The most frequent complication of portal vein aneurysm is thrombosis, which may lead to diagnostic uncertainty as it can resemble a tumor. Therefore, it is important to recognize this entity and its imaging features for accurate diagnosis. We present a case of a portal vein aneurysm in an adolescent boy, complicated with thrombosis, and report radiological findings, treatment, and short-term follow-up., (© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)

Introduction: The high prevalence of deep vein thrombosis (DVT) in patients admitted to intensive care unit (ICU) for COVID-19-related acute respiratory distress syndrome (ARDS) would justify systematic screening of these patients or higher therapeutic dose of heparin for thromboprophylaxis., Material and Method: We performed a systematic echo-Doppler of the lower limb proximal veins during the first 48 h (visit 1) and from 7 to 9 days after visit 1 (visit 2) in consecutive patients admitted to the ICU of a university-affiliated tertiary hospital for severe proven COVID-19 during the second wave. All patients received intermediate-dose heparin (IDH). The primary objective was to determine DVT incidence on venous Doppler ultrasound. Secondary objectives were to determine whether the presence of DVT modifies the anticoagulation regimen, the incidence of major bleeding according to International Society on Thrombosis and Haemostasis (ISTH) criteria, and the mortality rate of patients with and without DVT., Results: We included 48 patients (30 [62.5%] men) with a median age of 63 years [IQR, 54-70]. The prevalence of proximal deep vein thrombosis was 4.2% (2/48). In these two patients, after DVT diagnosis, anticoagulation was changed from intermediate to curative dose. Two patients (4.2%) had a major bleeding complication according to ISTH criteria. Among the 48 patients, 9 (18.8%) died before hospital discharge. No DVT or pulmonary embolism was diagnosed in these deceased patients during their hospital stay., Conclusion: In critically ill patients with COVID-19, management with IDH results in a low incidence of DVT. Although our study is not designed to demonstrate any difference in outcome, our results do not suggest any signal of harm when using intermediate-dose heparin (IDH) COVID-19 with a frequency of major bleeding complications less than 5%.

Superficial venous thrombosis (SVT) is a fairly common disorder, characterized by the formation of thrombi inside superficial veins, with or without an associated inflammatory reaction. Its evolution is frequently self-limited. However, serious complications may change this clinical course with extension to deep vein thrombosis (DVT) and pulmonary embolism (PE). SVT shares similar risk factors with DVT and is frequently associated with the presence of varicose veins. However, the occurrence of non-varicose veins could conceal risk factors such as malignancies, thrombophilia, or Buerger's disease. While the clinical diagnosis is generally straightforward, additional diagnostic evaluations are often necessary. Duplex ultrasound (DUS) is an invaluable tool that provides the location of SVT, the proximity to the sapheno-femoral junction, and the clot length, all of which influence the decision for optimal management. The treatment of SVT should be symptomatic, pathogenic (limiting the extension of thrombosis), and prognostic (to prevent complications). There are several guidelines that provide recommendations, and despite the need for more consensus and for further studies, the treatment of SVT should be mainly medical, including anticoagulation in specific clinical situations and symptom relief, with invasive treatment in a minority of cases. Initiation, intensity, and length of anticoagulant treatment should be based on the eventual risk of progression to DVT or PE, which can be high, intermediate, or low, based on the location of SVT and the clot length. Our review summarizes the evaluation and proper management of SVT and highlights the importance of a shared decision within the heart team regarding this condition in order to prevent further complications.

Neuralgic amyotrophy (NA) is a syndrome of abrupt onset severe pain in the shoulder usually on one side, followed by rapidly progressive weakness and wasting in the upper limb in asymmetric, patchy distribution due to multifocal neuropathy of brachial plexus. Atypical forms may present with involvement of other peripheral nerves including lumbosacral plexus, intercostal and phrenic nerves, and less frequently cranial nerves (CN) which can also be involved.[1] Here we presenting a case of atypical NA affecting bilateral upper limbs with CN involvement in a known patient of celiac disease., (Copyright © 2024 Copyright: © 2024 Neurology India, Neurological Society of India.)

An accurate diagnosis of lower limb deep vein thrombosis (DVT) recurrence is mandatory. The diagnosis is difficult and has not been well investigated. Our objective was to define the role of clinical probability assessment, D-dimer assay, venous ultrasound and other imaging methods in the diagnosis of this condition based on a review of published data. Our review did not find any clinical prediction rule (CPR) specific to the diagnosis of DVT recurrence. D-dimer assays have not been sufficiently validated or proved effective either alone or when combined with the assessment of clinical probability or with ultrasound. The only validated ultrasound criteria are a new non-compressible vein segment and a≥2mm or>4mm increase in diameter of the common femoral or popliteal vein under compression in the transverse plane between two examinations. Limitations of these criteria include poor inter-observer agreement, non-availability of previous ultrasound reports and measurements, a high percentage of non-diagnostic ultrasound results, lack of power in diagnostic accuracy and diagnostic management studies, and lack of external validation. The analysis of venous obstruction, thrombus appearance, vein diameter and blood flow based on colour Doppler ultrasound criteria has not yet been validated in studies. Magnetic resonance direct thrombus imaging (MRDTI) is a new promising diagnostic imaging method, but is hardly accessible, costly and needs large scale validation studies. Based on this review, an update of the guidance for clinical practice is proposed for the diagnostic management of patients with clinically suspected lower limb DVT recurrence., (Copyright © 2024. Published by Elsevier Masson SAS.)

The clinical risk factors and risk of developing pulmonary embolism (PE) in patients with acute isolated distal deep venous thrombosis (IDDVT) were assessed using single complete-duplex ultrasound (CDUS) imaging to reduce over-testing and over-treatment. This observational study was conducted from January 2020 to December 2022. Retrospective analysis was performed on CT pulmonary angiography (CTPA), blood coagulation markers, myocardial injury markers, blood gas analysis, and CDUS imaging of the lower extremity blood vessels of 146 patients with newly diagnosed IDDVT. Binary logistic regression was used to evaluate the relationship between these indicators and PE. After stepwise regression analysis, the predictors included in the regression model were D-dimer (DD), the sum of the thrombus length, and the maximum value of the thrombus width, with odds ratios (ORs) of 1.307 (p <0.001), 1.018 (p = 0.005), and 1.613 (p = 0.018), respectively. The combined prediction model achieved an area under the receiver operating characteristic curve (AUC) of 0.832 [95% confidence interval (CI): 0.761, 0.902]. By balancing the sensitivity and specificity of DD, combined single CDUS improves the predictive value for PE in patients with IDDVT. Key Words: Venous thrombosis, Pulmonary embolism, Ultrasonography, D-dimer, Diagnosis.

Competing Interests: Erklärung zu finanziellen Interessen Forschungsförderung erhalten: nein; Honorar/geldwerten Vorteil für Referententätigkeit erhalten: nein; Bezahlter Berater/interner Schulungsreferent/Gehaltsempfänger: nein; Patent/Geschäftsanteile/Aktien (Autor/Partner, Ehepartner, Kinder) an Firma (Nicht‐Sponsor der Veranstaltung): nein; Patent/Geschäftsanteile/Aktien (Autor/Partner, Ehepartner, Kinder) an Firma (Sponsor der Veranstaltung): nein Erklärung zu nichtfinanziellen Interessen S. Langner: Vorsitzender AG Kopf-Hals-Radiologie der Deutschen Röntgengesellschaft

Background and Aims: Transjugular intrahepatic portosystemic shunt (TIPS) is an established procedure for the treatment of several complications of portal hypertension (PH), including non-neoplastic portal vein thrombosis (PVT). Selection criteria for TIPS in PVT are not yet well established. Despite anecdotal, cases of thromboembolic events from paradoxical embolism due to the presence of patent foramen ovale (PFO) after TIPS placement have been reported in the literature. Therefore, we aimed at describing our experience in patients with non-neoplastic splanchnic vein thrombosis (SVT) who underwent TIPS following PFO screening., Methods: We conducted a single-centre retrospective study, including consecutive patients who underwent TIPS for the complications of cirrhotic and non-cirrhotic portal hypertension (NCPH) and having SVT., Results: Of 100 TIPS placed in patients with SVT, 85 patients were screened for PFO by bubble-contrast transthoracic echocardiography (TTE) with PFO being detected in 22 (26%) cases. PFO was more frequently detected in patients with non-cirrhotic portal hypertension (NCPH) (23% in the PFO group vs. 6% in those without PFO, p = .04) and cavernomatosis (46% in the PFO group vs. 19% in those without PFO, p = .008). Percutaneous closure was effectively performed in 11 (50%) after multidisciplinary evaluation of anatomical and clinical features. No major complications were observed following closure., Conclusions: PFO screening and treatment may be considered feasible for patients with SVT who undergo TIPS placement., (© 2024 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)

Rationale and Objective: To develop a new scoring system, the "Lower extremity venous Doppler ultrasound scoring system" (LEVDUS), to predict the diagnosis of pulmonary embolism (PE) localization in patients with deep vein thrombosis (DVT)., Methods: This single-center retrospective study included 182 patients aged ≥ 18 years. We used scoring according to thrombosis localization and stage in Doppler US. Patients with PE were divided into three categories based on the pulmonary artery (PA) location on CT pulmonary angiography. LEVDUS values were compared according to the PE classification. The threshold value was determined for the diagnosis of PE in the receiver operating characteristics analysis. Factors affecting the diagnosis of PE were evaluated by logistic regression analysis., Results: A total of 182 patients were included (female patients: 55.5% [101/182]). The median age of the patients was 68 (IQR, 56-77). The rates of DVT and PE were 35.2% (64/182) and 52.7% (96/182), respectively. Although the median LEVDUS and d-dimer values in the subsegmental PE group were higher, LEVDUS was statistically significant but d-dimer was not (p = 0.005 and p = 0.022, respectively). In addition, both LEVDUS and d-dimer median values in the other PE groups were statistically significantly higher than the non-PE group (p < 0.001). The cut-off value for the diagnosis of PE was LEVDUS≥ 2.5. LEVDUS was 1.2-fold higher for the presence of PE., Conclusion: LEVDUS provides useful information in predicting the presence of PE in patients and provides a common diagnostic language between radiologists and emergency or clinic physicians., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Association of University Radiologists. Published by Elsevier Inc. All rights reserved.)

Competing Interests: Disclosures None.

Background: The objective of this study is to compare and assess the efficacy and safety of low-molecular-weight heparin calcium (LMWH-Ca), followed by either warfarin or rivaroxaban, as treatment options for portal vein thrombosis (PVT) in patients with cirrhosis., Methods: In this pilot study, cirrhotic (with liver function score of Child-Pugh A) patients diagnosed with PVT who were not on anticoagulant therapy received 2 weeks of subcutaneous injections of LMWH-Ca. They were then randomized to either warfarin (a full course of oral warfarin for 6 months) or rivaroxaban (a full course of oral rivaroxaban for 2 months), with 30 cases in each group. After a treatment period of up to 6 months, a comparative analysis was performed to assess the efficacy and safety of both groups. Volumetric changes in PVT were monitored dynamically using enhanced computed tomography scans before treatment at week 2 and month 6., Results: There were no statistically significant differences in the clinical characteristics of the patients between the two groups. Rivaroxaban treatment reduced PVT median volume from 1.83 cm3 at week 2 to 0.0 cm3 at month 6 and prevented the worsening of PVT after 6 months of treatment with LMWH-Ca (P < 0.001). On the other hand, warfarin treatment increased PVT median volume from 1.95 cm3 at week 2 to 3.78 cm3 at month 6 (P = 0.002). None of the 30 patients in the rivaroxaban group had clinically significant gastrointestinal bleeding, while 2 of the 30 patients (7%) in the warfarin group had gastrointestinal bleeding (P = 0.317)., Conclusion: Rivaroxaban followed by LMWH-Ca is an effective anticoagulant treatment strategy for PVT in cirrhosis., (Copyright © 2024 Wolters Kluwer Health, Inc. All rights reserved.)

Objectives: To develop and evaluate a direct abdominal vein thrombus imaging (DATI) technique, based on a respiratory navigating SPACE sequence with DANTE black-blood preparation, for diagnosing abdominal vein thrombosis (AVT) without the use of exogenous contrast agents., Methods: We prospectively enrolled 10 healthy subjects and 28 suspected AVT patients who underwent DATI scans on 3.0 T MRI. Contrast-enhanced CT venography (CTV) was also conducted on the suspected AVT patients for comparison. All images were analyzed by two blinded radiologists who independently evaluated randomized images and gave image quality and diagnostic confidence scores (1-poor, 4-excellent) for DATI and CTV. The accuracy (ACC), sensitivity (SE), specificity (SP), positive predictive value (PPV), and negative predictive value (NPV) of CTV were calculated using CTV as a standard reference. The diagnostic agreement between DATI and CTV as well as the interobserver agreement were conducted using Cohen κ test., Results: The patient study demonstrated that DATI can provide adequate thrombus signal intensity and the contrast between the thrombus to dark venous lumen for the diagnosis of AVT. It offers good to excellent image quality (reader1/reader2: 3.50 ± 0.64/3.42 ± 0.63, κ = 0.872) and diagnostic confidence (reader1/reader2: 3.71 ± 0.53/3.78 ± 0.42, κ = 0.804) for the diagnosis of AVT. Taking CTV as a reference, DATI has high accuracy (96.6%), SE (91.5%), SP (98.0%), PPV (92.3%), and NPV (97.8%)., Data Conclusion: DATI can provide good to excellent image quality, effective venous blood signal suppression, and definitive thrombus detection for the diagnosis of AVT without the use of exogenous contrast agents., (© 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)

Competing Interests: Declaration of competing interest The authors have no conflicts of interest relevant to this article.

Background and Purpose: The prognosis of untreated spinal arteriovenous malformations (SAVMs) is poor. Embolization plays an important role in the management of intramedullary SAVMs. Delayed aggravation due to spinal venous thrombosis following successful embolization has been reported; however, perioperative management strategies to prevent thrombosis have not been explored. We present our single-center experience of SAVM embolization and perioperative management, including anticoagulation., Material and Methods: We retrospectively evaluated 18 patients with SAVMs who underwent transarterial embolization. Perioperative anticoagulation therapy was administered to selected patients. We compared the characteristics of the patients, including perioperative management procedures, between those with and without postoperative worsening following embolization., Results: Acute postoperative worsening within 1 week occurred in 4 (22.2%) patients. Of these, immediate worsening was observed in one patient as a procedure-related complication. Delayed worsening after 24 h was observed in 3 patients, caused by delayed venous thrombosis with severe back pain. Rescue anticoagulation for delayed worsening improved symptoms in two patients. A comparison between patients with and without acute postoperative worsening revealed significant differences in age (median 46.5 vs. 26.5 years, p = 0.009) and the presence of postoperative back pain (75.0% vs. 0%, p = 0.005); however, there was no significant difference in use of selective anticoagulation (p = 0.274)., Conclusion: The results of this study suggest that SAVM embolization can cause acute worsening due to postoperative venous thrombosis with severe back pain, which may be reversed by anticoagulation therapy. Back pain is an important finding that suggests venous thrombosis, and anticoagulation should be urgently administered., (© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany.)

Objectives: Cerebral Venous Thrombosis (CVT) poses diagnostic challenges due to the variability in disease course and symptoms. The prognosis of CVT relies on early diagnosis. Our study focuses on developing a machine learning-based screening algorithm using clinical data from a large neurology referral center in southern Iran., Methods: The Iran Cerebral Venous Thrombosis Registry (ICVTR code: 9001013381) provided data on 382 CVT cases from Namazi Hospital. The control group comprised of adult headache patients without CVT as confirmed by neuroimaging and was retrospectively selected from those admitted to the same hospital. We collected 60 clinical and demographic features for model development and validation. Our modeling pipeline involved imputing missing values and evaluating four machine learning algorithms: generalized linear model, random forest, support vector machine, and extreme gradient boosting., Results: A total of 314 CVT cases and 575 controls were included. The highest AUROC was reached when imputation was used to estimate missing values for all the variables, combined with the support vector machine model (AUROC = 0.910, Recall = 0.73, Precision = 0.88). The best recall was achieved also by the support vector machine model when only variables with less than 50 % missing rate were included (AUROC = 0.887, Recall = 0.77, Precision = 0.86). The random forest model yielded the best precision by using variables with less than 50 % missing rate (AUROC = 0.882, Recall = 0.61, Precision = 0.94)., Conclusion: The application of machine learning techniques using clinical data showed promising results in accurately diagnosing CVT within our study population. This approach offers a valuable complementary assistive tool or an alternative to resource-intensive imaging methods., Competing Interests: Declaration of competing interest The authors declare that they have no conflict of interest., (Copyright © 2024. Published by Elsevier Inc.)

Objective: Interventional treatments for acute iliofemoral deep vein thrombosis (DVT) remain controversial after publication of the Acute Venous Thrombosis: Thrombus Removal with Adjunctive Catheter-Directed Thrombolysis (ATTRACT) study. Interventions have been shown to reduce post-thrombotic syndrome severity and improve quality of life in DVT patients, but have been accompanied by risk of major bleeding from thrombolytics. We describe thrombus removal using a novel combined basket-rotational thrombectomy device that minimizes the need for thrombolytics or repeat procedures., Methods: The aim of this prospective, nonrandomized, multicenter, first-in-human study of 19 patients with acute iliofemoral DVT was to evaluate the safety and performance of the Pounce venous thrombectomy system ≤12 months after treatment. The primary performance end point was defined as procedural success through achievement of Society of Interventional Radiology (SIR) grade II lysis in treated vessels with freedom from procedural adverse events. Secondary end points included venous disease severity assessments using the Villalta scale and the Venous Clinical Severity Score, patient quality-of-life measurement using the Venous Insufficiency Epidemiological and Economic Study-Quality of Life questionnaire, and calf circumference measurements taken at baseline, 24 hours, and 1 month., Results: The primary end point of complete or near-complete thrombus removal (Society of Interventional Radiology grade II or III) was achieved in all patients. All study device-related safety end points were met, with no major bleeding or device-related adverse events. Of the 19 patients treated, 16 (84.2%) did not receive thrombolytics during the procedure. Post-thrombotic syndrome (Villalta scale >4) was identified in 17 of 19 patients (89.5%) at baseline, 4 of 13 patients (30.8%) available for follow-up at 6 months, and 2 of 11 patients (18.2%) at 12 months. The median Venous Clinical Severity Score decreased (P < .001) from 8.5 (interquartile range [IQR], 7-10) at baseline to 4 (IQR, 2-4) at 1 month after the procedure and was similar at 6 months (2; IQR, 2-5) and 12 months (2; IQR, 1.5-3) after the procedure. The median Venous Insufficiency Epidemiological and Economic Study-Quality of Life questionnaire score improved (P < .001) by 39 from baseline (57; IQR, 53.5-74) to 1 month (96; IQR, 86-101) after the procedure, and remained high at 6 months (99; IQR, 75-103) and 12 months (98; IQR, 94.5-100). The median calf circumference decreased (P = .089) from 39 cm (IQR, 35-47.8 cm) at baseline to 36 cm (IQR, 32.5-40.5 cm) at 24 hours after the procedure and was 34.5 cm (IQR, 33.2-38.5 cm) at 1 month., Conclusions: The Pounce device is safe and effective for removal the of thrombus in patients with acute iliofemoral DVT. Initial results demonstrate improvements in venous disease severity and patient quality of life., Competing Interests: Disclosures S.B. acknowledges Consulting/Speakers fees from Surmodics and Vetex. M.L. acknowledges consulting fees from Vetex and Surmodics. G.S. acknowledges stock options in Vetex., (Copyright © 2024. Published by Elsevier Inc.)

Background: Blood flow signals may be a confounder in quantifying T 1 values of plaque or thrombus and how to realize black-blood T 1 mapping remains a challenge task., Purpose: To develop a fast and three-dimensional black-blood T 1 mapping technique for quantitative assessment of atherosclerosis and venous thrombosis., Study Type: Sequence development and optimization via phantoms and volunteers as well as pilot prospective., Phantom and Subjects: Numerical simulations, a standard phantom, 8 healthy volunteers (mean age, 22 ± 1 years; 5 males), and 19 patients (mean age, 57 ± 14 years; 13 males) with atherosclerosis or venous thrombosis., Field Strength/sequence: 3T/inversion recovery spin-echo sequence (IR-SE), magnetization prepared 2 rapid acquisition gradient echoes (MP2RAGE), and black-blood prepared MP2RAGE (BB-MP2RAGE)., Assessment: The black-blood preparation (i.e., delay alternating with nutation for tailored excitation, DANTE) was incorporated into MP2RAGE for black-blood T 1 mapping. The BB-MP2RAGE was optimized numerically based on the Bloch equation, and then the phantom study was performed to verify the accuracy of T 1 mapping by BB-MP2RAGE against IR-SE and MP2RAGE. Preliminary clinical validation was prospectively performed to assess the flow suppression effect and its potential application in plaque and thrombosis identification., Statistical Tests: Pearson correlation test, Bland-Altman analysis, paired t-test, and intraclass correlation coefficient. A P value <0.05 indicates a statistically significant difference., Results: Phantom experiments showed comparable accuracy of T 1 maps by BB-MP2RAGE with IR-SE and MP2RAGE (all r 2  > 0.99); Compared to MP2RAGE, BB-MP2RAGE effectively nulled the blood flow signals, and had a significant improvement in contrast-to-noise ratio between static tissue and blood (250.5 ± 66.6 vs. 91.9 ± 35.9). BB-MP2RAGE can quantify plaque or thrombus T 1 relaxation time with blood flow signal suppression., Data Conclusion: Accurate T 1 mapping with sufficient blood flow suppression was achieved by BB-MP2RAGE. BB-MP2RAGE has the potential to quantitatively characterize atherosclerosis and venous thrombosis., Level of Evidence: 1 TECHNICAL EFFICACY: Stage 1., (© 2023 International Society for Magnetic Resonance in Medicine.)

Competing Interests: The authors report no conflicts of interest.

Objective: The aim of this study was to study the risk factors influencing the occurrence of moderate to severe post-thrombotic syndrome (PTS) within 2 years in patients with subacute lower extremity deep vein thrombosis (DVT)., Methods: Seventy patients who developed moderate to severe PTS within 2 years after subacute lower extremity DVT from June 2018 to June 2022 were retrospectively selected as the case group. They were matched 1:1 by sex and age (±5 years) with 70 patients who did not develop moderate to severe PTS during the same follow-up period as the control group. Multiple logistic regression, stratified analysis, and interaction analyses were used to explore the risk factors for moderate to severe PTS., Results: The multiple logistic regression model showed that patients with iliofemoral vein thrombosis had a significantly increased risk of developing moderate to severe PTS within 2 years. Patients who underwent intraluminal intervention treatment during hospitalization had a significantly reduced risk. The odds ratios were 4.000 (95% confidence interval, 1.597-10.016) for the femoral-popliteal vein thrombosis and 0.262 (95% confidence interval, 0.106-0.647) for the anticoagulation treatment group. The stratified analysis showed that intraluminal intervention treatment was a protective factor against moderate to severe PTS within 2 years across different strata of hypertension, thrombus type, body mass index, duration of anticoagulation, and wearing compression stockings. Additionally, there was an interaction between thrombus type and treatment method, with intraluminal intervention treatment having a more pronounced effect on preventing moderate to severe PTS in patients with iliofemoral vein thrombosis., Conclusions: Iliofemoral vein thrombosis is a risk factor for the development of moderate to severe PTS within 2 years in patients with subacute lower extremity DVT. Intraluminal intervention treatment can reduce the risk of moderate to severe PTS, especially in patients with iliofemoral vein thrombosis., Competing Interests: Disclosures None., (Copyright © 2024 The Author(s). Published by Elsevier Inc. All rights reserved.)

Objective: To assess the incidence of pelvic vein thrombosis (PVT) and outcomes of anticoagulant therapy for PVT in patients with pelvic venous disorders (PeVDs)., Methods: This prospective cohort study included 588 female patients with PeVDs underwent clinical examination followed by duplex ultrasound of the pelvic veins in 2021-2023. Patients with PVT were administered with anticoagulant therapy in an outpatient setting using low molecular weight heparins at a therapeutic dose., Results: PVT was detected in 7.6% of patients with PeVDs and was symptomatic in 28.8% of them. The majority of asymptomatic patients had thrombosis in only one of the parametrial veins (90.6%). Anticoagulant therapy resulted in the PVT symptoms relief in all patients within 10 days and recanalization of the pelvic veins in 1-3 months., Conclusion: In our study, PVT was diagnosed in 7.6% of patients with PeVDs. Anticoagulant therapy is effective and safe in resolving PVT symptoms., Competing Interests: Declaration of conflicting interestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

Objective: Non-vitamin K antagonist oral anticoagulants have shown similar efficacy and lower bleeding rates than vitamin K antagonists for venous thromboembolism. However, this has not been proven in mesenteric vein thrombosis. This study aimed to compare the clinical outcomes of vitamin K antagonists and non-vitamin K antagonist oral anticoagulants., Methods: Between January 2014 and July 2022, mesenteric vein thrombosis was diagnosed on computed tomography in 225 patients in a tertiary hospital. Among them, a total of 44 patients who underwent long-term anticoagulation therapy over 3 months were enrolled in this study. Patients were divided into two groups based on the anticoagulant used: vitamin K antagonists (Group 1, n = 21) and non-vitamin K antagonist oral anticoagulants (Group 2, n = 23). The efficacy outcomes were symptom recurrence and thrombus resolution on follow-up computed tomography, and the safety outcome was bleeding complications., Results: The median age of the patients was 56 years (range, 46-68 years), and 52% were men. The most common risk factors were unprovoked intra-abdominal infections (30%). The median duration of anticoagulation therapy was 13 months (20 months in Group 1 vs 6 months in Group 2; P = .076). Of the 44 patients, 17 (39%) received the standard treatment. The median follow-up period was longer in Group 1 than in Group 2 (57 vs 28 months; P = .048). No recurrence of mesenteric vein thrombosis-related symptoms were observed in either group. The median duration of follow-up computed tomography was 31 months (42 months in Group 1 vs 18 months in Group 2; P = .064). Computed tomography revealed complete thrombus resolution, partial resolution, and no changes in 71%, 19%, and 10%, respectively (P = .075). Regarding bleeding complications, varix bleeding and melena developed in two patients in Group 2, and anticoagulation treatment thereafter ceased., Conclusions: Despite the short follow-up duration in the non-vitamin K antagonist oral anticoagulants group, there was no clinically significant difference in the thrombus resolution rate or bleeding complications when compared with the vitamin K antagonists group. Although research on the long-term effects of non-vitamin K antagonist oral anticoagulants in patients is limited, non-vitamin K antagonist oral anticoagulants can be considered an alternative to conventional treatments., Competing Interests: Disclosures None., (Copyright © 2024 The Author(s). Published by Elsevier Inc. All rights reserved.)