Search

Cystic hydatid disease or cystic echinococcosis (CE) is a globally endemic zoonosis caused by the larval cyst stage of the tapeworm Echinococcus granulosus. Concomitant presence of CE and hepatocellular carcinoma (HCC) is a rare clinical scenario. A 70-year-old male patient presented with acute abdominal pain to the surgical outpatient department. On evaluation, a cystic lesion with solid components and free fluid in the abdomen was observed, which led to multiple differentials in the working diagnosis. A CT showed the mass to have a delayed enhancement. Surgical exploration revealed a partially ruptured hydatid cyst with daughter cysts in the abdominal cavity and a solid-component mass lesion. We proceeded with a right partial hepatectomy. Pathological evaluation revealed a pale mass lesion with a large collapsed cyst. HCC with unusual dense fibrillar fibrosis and cystic interface with normal parenchyma was observed. This case connects the multimodal assessment of radiology, surgery and pathology.

Mycotic aneurysms are rare and if left untreated, can have devastating outcomes. In this case, a 72-year-old man presented to hospital with fevers, night sweats and abdominal pain. A CT scan revealed the development an infrarenal pseudoaneurysm over the course of 8 weeks, increasing from 2.8 cm to a 3.1 cm. The aneurysm was not present on a CT scan performed 6 months earlier. The patient underwent an emergency endovascular repair of the aortic aneurysm (EVAR) and was placed on broad-spectrum antibiotics. Intra-aortic blood cultures aspirated adjacent to the aneurysm and tissue biopsy confirmed tuberculosis bovis as the cause of the mycotic aneurysm. The patient had been treated with intravesical BCG for transitional cell carcinoma of the bladder several months prior. The patient was treated with an extended course of antituberculosis medication. He recovered well and was back to his baseline function within weeks.

A 36-year-old man with peptic ulcer disease presented to the emergency department with a 2-day history of haemoptysis and cough. Though he had no prior pulmonary symptoms, he noted progressive chest tightness and shortness of breath. He had no fever or night sweats. Vital signs were afebrile and

Torcular dural sinus malformations (tDSMs) represent a rare subset of paediatric cerebrovascular malformations and are often diagnosed antenatally via ultrasound. The management of these in utero lesions remains controversial as previous studies suggested elective termination of the pregnancy because of their presumably high mortality and severe long-term morbidity. However, more recent evaluations have suggested that the overall prognosis for infants harbouring these lesions may be much better than previously believed. As such, we present the case of a neonate with a giant tDSM, diagnosed in utero, who was treated postnatally via staged transarterial and transvenous embolisation to alleviate worsening obstructive hydrocephalus and brainstem compression. We provide details regarding the surgical approach and long-term neurological outcomes for this patient. To the best of our knowledge, this is one of the largest reported tDSM presented in the literature.

Renal cell carcinoma (RCC) frequently presents with osseous metastasis, predominantly lytic and prone to pathological fracture. The metastatic lesion in the extremity presents with local swelling, pain and immobility due to pathological fracture. The solitary or oligometastatic lesions should be treated with curative intent, which can help the patient to lead a more prolonged and disability-free life. The RCCs and their metastases are hypervascular with an exuberant arterial supply. Surgery can lead to uncontrolled life-threatening haemorrhage. Preoperative transarterial embolisation reduces tumour vascularity significantly and reduces intraoperative blood loss. We present a 46-year-old male patient with solitary hypervascular metastatic recurrence of RCC with a pathological femoral fracture with an infeasible initial surgery due to profuse haemorrhage. He was successfully treated by preoperative transarterial embolisation, followed by surgical resection and implantation of a megaprosthesis. Multidisciplinary management reduces patient morbidity and mortality with successful treatment in solitary hypervascular metastasis from RCC.

An elderly patient presented with acute-onset right-sided weakness and aphasia. A large penumbra was noted in the left middle cerebral artery (MCA) territory without any infarct core. The patient was noted to have a carotid–carotid bypass. This posed certain technical challenge in accessing the intracranial circulation across the carotid bypass; however, the guiding catheter with soft distal segment was successfully navigated coaxially over the aspiration catheter across the bypass and intracranial circulation was accessed for mechanical thrombectomy. Complete recanalisation and reperfusion were achieved with significant neurological recovery of the patient post-thrombectomy. The aim of this report is to emphasise on this rarely encountered situation in thrombectomy and its successful management. The procedure should not be delayed or deferred due to lack of operator experience.

The standard endovascular treatment for ruptured dissecting aneurysm is a parent artery occlusion. However, this treatment is unsuitable when the artery of the lesion gives off perforating vessels that supply blood to critical regions or when the collateral flow cannot be expected due to the sacrifice of the parent artery. Here, we present an infrequent case of ruptured dissecting aneurysm on P1 segment of the posterior cerebral artery. The aneurysm had little sac for coiling and the artery of the lesion had some perforator branches; thus, we selected the monotherapy with three overlapping low-profile visualised intraluminal support stents as radical treatment, which resulted in prompt obliteration of the aneurysm. The patient was fully recovered at 3 months after the procedure. Previous studies have reported the effectiveness of multiple stents alone for dissecting aneurysms, whereas this case showed that overlapping stents may also be effective on the P1 segment.

A 50-year-old man with atrial fibrillation without anticoagulation presented to the hospital after tonic–clonic seizures, followed by pulseless cardiopulmonary arrest with return of spontaneous circulation after 2 min. Imaging demonstrated a left superior cerebellar thromboembolic ischaemic

Several studies have shown that ultrasound guidance may contribute to improved safety, effectiveness and accuracy of musculoskeletal interventional procedures performed around the hip if compared to those performed with a landmark-guided technique. Different approaches and injectates can be used for treating hip musculoskeletal disorders. These procedures may involve injections in the hip joint, periarticular bursae, tendons, and peripheral nerves. Intra-articular hip injections are mostly used as a conservative approach for treating patients affected by hip osteoarthritis. Ultrasound-guided injection of the iliopsoas bursa is performed in patients with bursitis and/or tendinopathy, to treat those with painful prosthesis due to iliopsoas impingement, or when the lidocaine test is indicated to identify the iliopsoas as a source of pain. Ultrasound-guided interventions are routinely used in patients with greater trochanteric pain syndrome having as target the gluteus medius/minimus tendons and/or the trochanteric bursae. Ultrasound-guided fenestration and platelet-rich plasma injection are applied in patients with hamstring tendinopathy with good clinical outcomes. Last but not least, ultrasound-guided perineural injections can be used for peripheral neuropathies or blocks of the sciatic, lateral femoral cutaneous, and pudendal nerves. In this paper, we discuss the evidence and technical tips for musculoskeletal interventional procedures performer around the hip, highlighting the added value of ultrasound as an imaging guidance modality.

Rupture of a racemose hemangioma causing dilatation and tortuosity of the bronchial artery can result in massive bleeding and respiratory failure. Bronchial artery embolization (BAE) can treat this life-threatening condition, as we show in two cases. The first case was of an 89-year-old female complaining of sudden-onset chest and back pain. Bronchial artery angiography demonstrated a racemose hemangioma with a 2 cm aneurysm. The second case was of a 50-year-old male with hemoptysis and dyspnea, eventually requiring intubation. Bronchial arteriography showed a racemose hemangioma and a bronchial artery-pulmonary arterial fistula. BAE was successfully performed in both cases, with no recurrent hemorrhage. Therapeutic interventions in bronchial artery racemose hemangiomas include lobectomy or segmentectomy, bronchial arterial ligation, and BAE. BAE should be considered as first-line therapy for bleeding racemose hemangiomas of the bronchial artery because of its low risk of adverse effects on respiratory status, minimal invasiveness, and faster patient recovery.

Purpose To determine demographics, practice patterns, needs from Society of Interventional Radiology (SIR), and preferences of interventional radiologists (IRs) early in their careers. Methods A 28-question descriptive survey was used to identify demographic and practice composition, practice issues, and needs of early career IRs. The survey was distributed to SIR members in the United States (US) (n = 859) within the first 8 years of practice, with 213 respondents (25%). Results Respondents were primarily male (n = 181, 87%), less than 40 years old (n = 156, 73%), in practice for 6 years or less (n = 167, 79%), and satisfied with IR as a career (n = 183, 92.4%). The majority were in academic practice (n = 89, 43.2%) or large private practice group (n = 67, 32.5%). Most respondents read diagnostic imaging daily or weekly (n = 130, 61%). The majority of respondents perform complex procedures regularly including transarterial tumor therapy, percutaneous tumor ablation, peripheral arterial interventions, and biliary interventions monthly. Many respondents (n = 49, 23%) have changed jobs at least once citing career advancement, practice issues/disagreements, or compensation as reason. Most respondents would serve as mentors (n = 170, 80%) for trainees and were satisfied with their career mentorship (n = 166, 78%). Respondents felt that mentorship, identification of barriers facing early career IRs, and networking should be the most important functions of the Early Career Section (ECS)of the SIR. Conclusion As nearly all survey respondents indicated that early career IRs have different needs and priorities than established physicians, they felt that mentorship, identification of barriers facing early career IRs, and networking should be the most important functions of the ECS. Additionally, this same group of IRs report low comfort with the business side of medicine and may benefit from directed content provided by the SIR ECS.

A 79-year-old hypertensive man with chronic type B aortic dissection (TBAD) came with acute chest pain. CT revealed partially thrombosed aneurysmal dilatation of false lumen, compressing trachea and oesophagus (chronic complicated TBAD) with the extremely tortuous descending thoracic aorta ([figures

Hookwire migration is a rare complication of wide local excision surgery for breast neoplasia. We report the case of a 64-year-old woman who presented to hospital with acute on chronic left upper quadrant and left scapular pain. She had undergone a hookwire-guided wide local excision of a right breast neoplasm 5 years previously. Her vital signs, clinical examination and blood test were unremarkable. A CT scan revealed a left-sided pneumothorax and a 20 cm metallic intraperitoneal foreign body transpiercing the diaphragm. A review of the patient’s clinical record revealed that she experienced a vagal collapse during hookwire implantation. This article underlines the importance of clear communication between members of a multidisciplinary team involved in a staged surgical intervention and exemplifies that foreign bodies can migrate across large distances, sometimes against gravity, to cross multiple anatomical compartments and cause iatrogenic injuries multiple years after an index intervention

A 65-year-old man experienced sudden onset of abdominal pain while working on his farm without significant trauma. He heard a ‘pop’ sound, followed by abdominal pain, lightheadedness and diaphoresis. He has a history of polycythemia vera (PV) and chronic severe splenomegaly, treated with

This 79-year-old woman was involved in a road traffic collision in which another driver rear-ended her stationary car at a speed of around 70 m/h. She was transferred to the nearest Major Trauma Centre, where her observations remained stable and initial primary survey was unremarkable. She had a

Rationale and Objectives Appropriate image manipulation of angiographic image display systems during interventional radiology is performed by radiological technologists and/or nurses given instructions from radiologists. However, appropriate images might not be displayed because of communication errors. Therefore, we developed a manipulation system that uses an eye tracker. The study aimed to determine if an angiographic image display system can be manipulated as well by using an eye tracker as by using a mouse. Materials and Methods An angiographic image display system using an eye tracker to calculate the gaze position on the screen and state of fixation was developed. Fourteen radiological technologists participated in an observer study by manipulating 10 images for each of 5 typical cases frequently performed in angiography, such as renal tumor, cerebral aneurysm, liver tumor, uterine bleeding, and hypersplenism. We measured the time from the start to the end of manipulating a series of images required when using the eye tracker and the conventional mouse. In this study, the statistical processing was done using Excel and R and R studio. Results The average time required for all observers for completing all cases was significantly shorter when using the eye tracker than when using the mouse (10.4 ± 2.1 s and 16.9 ± 2.6 s, respectively; p Conclusion Radiologists were able to manipulate an angiographic image display system directly by using the newly developed eye tracker system without touching contact devices, such as a mouse or angiography console. Therefore, communication error could be avoided.

We present two cases of 17-year-old man and 10-year-old boy presenting with subarachnoid haemorrhage and a history of road traffic accident. One patient had dissecting aneurysm of the posterior cerebral artery (PCA), and the other patient had partially thrombosed aneurysm on CT angiography. On digital subtraction angiography of the second patient, there was formation of PCA pontomesencephalic vein pial arteriovenous fistula (PAVF). Both the patients underwent endovascular treatment: stent-assisted coiling for aneurysm and coiling with parent vessel occlusion for PAVF. There were no procedural complications. Follow-up angiography showed no residual aneurysm or fistula. Trauma is one of the recognised causes of dissection, and intracranial dissections can present as stenotic lesions, aneurysms or fistulas, depending on the pathology. Traumatic dissecting PCA aneurysm has been reported in only two case reports previously, and post-traumatic PAVF in PCA has not been reported.

Hypoglycaemia due to insulin-like growth factor (IGF)-2 secretion is a paraneoplastic complication of malignancy with significant morbidity that can often go unrecognised due to its uncommon presentation. We report on a case of a 51-year-old man with metastatic haemangiopericytoma presenting with refractory hypoglycaemia, requiring continuous dextrose 10% infusion while in hospital. IGF-2 levels were significantly elevated, in keeping with a rare entity associated with solitary fibrous tumours, known as Doege-Potter syndrome. The patient was managed using uncooked cornstarch in conjunction with debulking of the hepatic tumour burden with bland IR-guided transarterial embolisation, and eventual surgical resection to treat his non-islet cell tumour hypoglycaemia (NICTH). The case highlights this rare paraneoplastic phenomenon that should be included in the differential for hypoglycaemia, especially if a history of a solitary fibrous tumour is elicited. Our case is the first to document a successful approach to treating the hypoglycaemia using preoperative transarterial bland embolisation.

A 68-year-old woman with a history of hypertension, hyperlipidemia and 10 pack-year smoking history presented with sudden onset of the worst headache of her life. She denied any family history of brain aneurysms. CT angiography (CTA) revealed a subarachnoid haemorrhage due to a ruptured right

Congenital web formations are extremely rare anomalies of the extrahepatic biliary tree. We herein report a case of common bile duct septum combined with multiple intrahepatic bile duct strictures in a 74‐year‐old female patient who was successfully treated with radiological intervention. The patient initially visited the hospital because of upper abdominal pain. Imaging studies revealed multifocal strictures with dilatation in both intra- and extrahepatic ducts; the final clinical diagnosis was congenital common bile duct web combined with multiple intrahepatic duct strictures. Surgical treatment was not indicated because multiple biliary strictures were untreatable, and the disease was clinically diagnosed as benign. The multiple strictures were extensively dilated twice through bilateral percutaneous transhepatic biliary drainage (PTBD) for 2 months. After 1 month of observation, PTBD catheters were successfully removed. The patient is doing well at 6 months after completion of the radiological intervention, with the maintenance of normal liver function. Congenital web of the bile duct is very rare, and its treatment may vary depending on the patterns of biliary stenosis. In cases where surgical intervention is not indicated for congenital web and its associated disease, radiological intervention with balloon dilatation can be a viable therapeutic option.

Biliary complications, including biliary stricture and obstruction, remain a major cause of morbidity and mortality after living donor liver transplantation. In these patients the biliary system may not be accessible by endoscopic approach due to Roux-en-Y hepaticojejunostomy, and a percutaneous approach may be considered to avoid surgical interventions. When there is complete biliary obstruction, the conventional percutaneous approaches may not be successful to cross the hepaticojejunostomy anastomosis. In this study, a totally percutaneous rendezvous technique was used to create a neo-biliary-enteric tract using a trans-biliary Rosch-Uchida needle in a patient with complete biliary obstruction and Roux-en-Y anastomosis after a split liver transplant. A biodegradable stent was placed after recanalization with long-term patency on follow up.

Bleeding is less common from anorectal varices than from esophageal varices, but it is potentially life-threatening. Here, we present a case of a woman in her 70s with critical hemorrhage from anorectal varices. The endoscopic approach could not be performed due to the huge variceal formation and the transhepatic approach was also unsuitable due to the presence of portal vein thrombosis and ascites. A direct puncture to the right superior rectal vein was performed through the greater sciatic foramen under computed tomography fluoroscopic guidance. Using a steerable microcatheter, superior rectal veins were bilaterally embolized with a mixture of n-butyl cyanoacrylate and ethiodized oil, and microcoils. Endoscopy and contrast-enhanced computed tomography performed after the procedure confirmed a marked shrinkage of anorectal varices. When endoscopic or any other approaches are difficult, this technique can be a useful alternative therapeutic option.

Jejunal varices are a rare cause of gastrointestinal bleeding. In most cases, they are due to portal hypertension related to liver cirrhosis, less frequently to superior mesenteric vein stenosis (SMV). In this article we describe an unusual case of a 61 year-old male patient who arrived at our emergency department with intermittent variceal bleeding due to jejunal varices causing melena and subsequent chronic anaemia. Patient was indeed discovered to have primary idiopathic superior mesenteric vein stenosis. We managed to treat this patient via SMV stenting through percutaneous transhepatic approach. In cases of upper-GI bleed with negative endoscopy for active bleeding, a contrast-enhanced CT scan should be performed to diagnose jejunal varices and their underlying cause, such as SMV stenosis which is best treated with percutaneous phlebography.

Chronic pancreatitis is associated with impaired quality of life, high incidence of comorbidities, serious complications and mortality. Healthcare costs are exorbitant. Some medical societies have developed guidelines for treatment based on scientific evidence, but the gathered level of evidence for any individual topic is usually low and, therefore, recommendations tend to be vague or weak. In the present position papers on chronic pancreatitis from the Societat Catalana de Digestologia and the Societat Catalana de Pàncrees we aimed at providing defined position statements for the clinician based on updated review of published literature and on multidisciplinary expert agreement. The final goal is to propose the use of common terminology and rational diagnostic/therapeutic circuits based on current knowledge. To this end 51 sections related to chronic pancreatitis were reviewed by 21 specialists from 6 different fields to generate 88 statements altogether. Statements were designed to harmonize concepts or delineate recommendations. Part 2 of these paper series discuss topics on treatment and follow-up. The therapeutic approach should include assessment of etiological factors, clinical manifestations and complications. The complexity of these patients advocates for detailed evaluation in multidisciplinary committees where conservative, endoscopic, interventional radiology or surgical options are weighed. Specialized multidisciplinary units of Pancreatology should be constituted. Indications for surgery are refractory pain, local complications, and suspicion of malignancy. Enzyme replacement therapy is indicated if evidence of exocrine insufficiency or after pancreatic surgery. Response should be evaluated by nutritional parameters and assessment of symptoms. A follow-up program should be planned for every patient with chronic pancreatitis. © 2021 Elsevier España, S.L.U.

INTRODUCTION Social media platforms, especially Twitter, are increasingly utilized across medical practice, education, and research. However, little is known about differences in social media use among physicians of varying specialties and its impact on recruitment of trainees. Our objective was to describe differences in social media use among vascular interventional proceduralists at academic training institutions. METHODS We identified institutions with training programs in vascular surgery (VS), interventional radiology (IR), and interventional cardiology (IC). Faculty providers were identified in each specialty at these institutions. A standardized search was used to identify non-anonymous social media profiles on Facebook, Instagram, and Twitter in September 2019. Influencers were defined as physicians with more than 1,000 Twitter followers. Follow ratio was defined as the number of followers divided by the number of accounts followed. Between-specialty differences were analyzed. RESULTS A total of 1,330 providers (n=454 VS, n=451 IR, n=425 IC) were identified across 47 institutions in 27 states. Across all physicians, a minority of providers utilize social media (Facebook: 24.9%, n=331; Instagram: 10.8%, n=143; Twitter: 18.0%, n=240). VS were significantly more likely to use Instagram (p=0.001) but there was not a significant difference in utilization of Facebook and Twitter. Among Twitter users, VS had fewer followers on average (median 178, inter-quartile range [IQR] 39-555) than IR (median 272, IQR 50-793, p=0.26) and IC (median 286, IQR 71-1257, p=0.052). IC were most likely to be influencers (30.9%, n=25) followed by IR (17.9%, n=15) and VS (10.7%, n=8, p=0.006). On average, interventional cardiologists had the highest follow ratio (mean 4.9 ± 7.1) compared to interventional radiologists (mean 3.2 ± 5.5) and vascular surgeons (mean 2.5 ± 3.3, p

Placement of image-guided tunneled and non-tunneled large-bore central venous catheters (CVCs) are common procedures in interventional radiology. Although leukopenia and/or thrombocytopenia are common at the time of placement, the roles these factors may have in subsequent catheter-related infection have yet to be investigated. A single-institution retrospective review was performed in patients who underwent CVC placement in interventional radiology between 11/2018–6/2019. The electronic medical record was used to obtain demographics, procedure details, pre-placement laboratory values, and the subsequent 90-day follow-up. A total of 178 tunneled and non-tunneled CVCs met inclusion criteria during this time period. White blood cell (WBC) and platelet counts were found to be significant risk factors for subsequent infection. Administration of pre-procedure antibiotics was not found to be a significant factor for subsequent infection (p = 0.075). Leukopenia and thrombocytopenia at the time of CVC placement are both risk factors of line infection for tunneled large-bore CVCs. This should lead to the consideration of using a non-tunneled CVC when clinically feasible, or the delayed placement of these catheters until counts recover.

Pancreatic pseudocyst formation, arterial pseudoaneurysm, and splanchnic vein thrombosis are complications of chronic pancreatitis that account for significant morbidity and mortality in this patient population. While the short-term utility of timely endovascular intervention for treating the vascular complications of chronic pancreatitis have been relatively well documented, there is a paucity of longitudinal follow-up in this patient population, therefore making it difficult to predict the long-term efficacy of these interventions. This report details a case of a gastroduodenal artery pseudoaneurysm embolization followed by symptomatic superior mesenteric vein chronic thrombosis treated by stent dilatation in a patient with chronic pancreatitis, with 7 years clinical and imaging follow-up.

Background and Aims Lumen-apposing metal stents (LAMSs) provide an endoscopic method for management of walled-off necrosis (WON) and a gateway for the performance of endoscopic necrosectomy (EN). However, bleeding may occur in up to 20% of EN procedures. Predictive factors for bleeding in this patient population are unknown, and there is no agreed-upon algorithm for management of bleeding. The aim of this study was to evaluate preprocedural risk factors for bleeding in patients undergoing endoscopic drainage or EN for WON. Methods A retrospective cohort of patients undergoing EN for WON was reviewed. Demographics, comorbidities, concurrent medications, and etiology of pancreatitis were recorded. Pre-, peri-, and postprocedural clinical variables were compared using Chi-squared test and independent t-test. Results Between June 2014 and October 2020, 536 EN were performed in 151 patients. Intraprocedural bleeding occurred during 28 procedures (5.2%) in 18 patients (11.9%.) Endoscopic hemostasis was attempted in 8 patients (10 procedures). Eight patients (10 procedures) in total were treated by IR. Thrombocytopenia (p = 0.006) and cirrhosis (p = 0.049) were associated with intraprocedural bleeding, although thrombocytopenia was present in only one patient. Identification of a vessel within the cavity endoscopically was also associated with bleeding (p Conclusions EN for WON was associated with a 5.2% per procedure risk of bleeding and an 11.9% per-patient bleeding risk. Identification of a vessel within the cavity during endoscopy is predictive of bleeding during EN. Patients who require more transfusions before endoscopy may require earlier intervention by IR.

Background Management algorithms of pediatric blunt abdominal solid organ injury (BASOI) are evolving to include interventional radiology, but there are few studies documenting the application and clinical outcomes of cases in children. Methods A retrospective case note review of all paediatric BASOI at a single Paediatric Major Trauma Centre was completed. CT scans and injuries have been retrospectively graded according to AAST guidelines. Results In the period February 2012 - October 2019, there were 106 children (median age 10.6 years (range 10 days – 16 years)) with BASOI. Of these, 71% (n = 75) suffered liver injuries, 29% (n = 31) spleen, and 27% (n = 29) renal. 95 children (89.6%) were treated with non-operative management, of which 15% (n = 14) went on to require secondary operative management (surgery, n=1 & interventional radiology, n= 14). There were no deaths or loss of organ in the group which required secondary operative management, regardless of the grade of injury. Conclusion The majority of BASOI can be successfully treated conservatively, but IR is a useful additional tool in their management for all grades of injury and is complementary to open surgery.

Background We describe a minimally invasive, image-guided technique for obstructed hemivagina and ipsilateral renal anomaly (OHVIRA) syndrome complicated by tubo-ovarian abscess (TOA). Case A 15-year-old female adolescent with OHVIRA syndrome presented with TOA. Magnetic resonance imaging of the abdomen/pelvis showed a loculated pelvic mass and fluid collection near the obstructed left hemivagina. Tissue quality and ill-defined surgical planes prevented surgical excision. A transabdominal drain was placed via laparoscopic port by Interventional Radiology. She later underwent transvaginal and transabdominal drain placement into the hemivaginal collection using computed tomography and ultrasound guidance, allowing for surgical excision of the vaginal septum, drainage and excision of the TOA, and neosalpingostomy. Summary and Conclusion Because of the anatomic complexity in OHVIRA syndrome, preoperative minimally invasive techniques with Interventional Radiology collaboration can assist intraoperative anatomic navigation for successful surgical treatment.

PURPOSE To assess the prevalence of positive conflict of interest (COI) disclosures in U.S.-based interventional radiology (IR) research as well as the level of agreement between disclosed financial relationships and open payment data for top-cited image-guided procedure research. MATERIALS AND METHODS All publications in volume 30 (2019) of the Journal of Vascular and Interventional Radiology (JVIR) were reviewed to estimate the prevalence of COI disclosures in IR research. Publications were categorized as primary research, systematic review, or other. Prevalence was then compared across JVIR publication subtype, categories, and whether they were device-focused with chi-squared tests. Additionally, the Web of Science database was searched for the top 10 cited studies of 10 common image-guided procedures with available U.S. physician payment data. Payments were categorized as historical (>1 year prior to publication) or active (

Introduction: Renal biopsy remains an essential tool for the diagnosis and treatment of patients with medical kidney disease. Recently, there has been a perceived change in the number of inadequate samples. The aim of this study was to determine the native renal biopsy miss rate from 2005 to 2020 at Arkana Laboratories, a nationwide kidney biopsy service. Methods: From 2005 to 2020, a total of 123,372 native kidney biopsies were received from >2500 nephrologists practicing across 44 US states. The miss rate was determined by age and year. In a subset of biopsies received in 2005 and 2018, the biopsy operator was determined, nephrologist or radiologist. Furthermore, the miss rate, needle gauge, biopsy depth by operator, and biopsy core width by gauge were measured. Results: The miss rate increased markedly from 2% in 2005 to 14% in 2020. Radiologists performed 5% of biopsies in 2005 and 95% in 2018 using smaller diameter (18g/20g) needles 92% of the time. Glomeruli per centimeter of core biopsy and mean core width were significantly lower with smaller needles. The miss rate deep was significantly lower for nephrologists and remained consistent within operator between the 2 time points. The miss rate did not correlate with the increasing age of the population who had biopsies. Conclusion: This increase in kidney biopsy miss rate significantly affects patient care in the management of medical kidney disease. Its correlation with the complete reversal in operators suggests an urgent need for interaction with and training of radiologists in this critical technique.

Introduction A long dwell time is associated with higher inferior vena cava (IVC) filter retrieval complication rates. Manufacturers advise that “excessive force should not be used” during filter retrieval; however, the term “excessive” is subjective and is likely to lead to variability amongst operators. The aims of this study were to 1) ascertain what interventional radiologists consider to be excessive force during filter retrieval and 2) to understand the variability in interventional radiologists’ perception of force. Methods The authors recruited interventional radiologists to perform a benchtop simulated filter retrieval. Participants were invited to pull on a modified force tester attached to a Gunther Tulip filter retrieval set (GTRS). The participants were asked to pull as if they were retrieving an IVC filter and stop when they felt it was clinically unsafe to apply greater force. They were then asked to replicate forces of 10N and 50N, respectively. Each of the three tasks was completed three times. Data were obtained on the clinical experience of the participants with specific questions focusing on their filter retrieval practices. Results The range of maximum forces applied during filter retrieval varied between 0.8 and 79.8N. When asked to replicate 10N and 50N, for attempt-1, the median forces produced were 23.5N and 38.1N, respectively. A trend analysis showed that those who overestimate 10N are more likely to apply a greater overall maximum force (rs = 0.622; P Conclusion There is wide variation in what interventional radiologists consider to be the maximum safe force to apply during IVC filter retrieval. Implications for practice Manufacturers and operators should consider methods in which only a safe range of forces can be applied during an IVC filter retrieval. Operators may wish to undertake ‘personal’ force calibration as part of training in interventional radiology.

OBJECTIVE: This paper examines the incidence, clinical presentation, and pathophysiology of portal vein thrombosis (PVT) in cirrhosis. Additionally, we have reviewed the literature regarding the current status of medical and interventional radiology management of PVT and have proposed a novel algorithm for the management given different clinical scenarios. Lastly two representative cases displaying endovascular treatment options are provided. BACKGROUND: Portal vein thrombus in the setting of cirrhosis is an increasingly recognized clinical issue with debate on its pathophysiology, natural course, and optimal treatment. Approximately one-third of patients are asymptomatic, and detection of the thrombus is an incidental finding on imaging performed for other reasons. In 30% to 50% of patients, PVT resolves spontaneously. However, there is increased post-transplant mortality in patients with completely occlusive PVT, therefore effective early revascularization strategies are needed for patients with complete PVT who are expected to undergo liver transplant. Additionally, no consensus has been reached regarding PVT treatment in terms of timing and type of interventions as well as type and duration of anticoagulation. METHODS: Computerized literature search as well as discussion with experts in the field. CONCLUSIONS: Management of PVT is complex, as many variables affect which treatments can be used. Anticoagulation appears to be the optimal first-line treatment in patients with acute PVT but without bleeding varices or mesenteric ischemia. Minimally invasive treatments include various methods of mechanical thrombectomy, chemical thrombolysis, and transjugular intrahepatic portosystemic shunt (TIPS) placement with or without variceal embolization. Definitive recommendations are difficult due to lack of high quality data and continued research is needed to evaluate the efficacy of different anticoagulants as well as the timing and use of various minimally invasive therapies in specific circumstances.

Purpose To determine institutional practice requirements for personal protective equipment (PPE) in cross-sectional interventional radiology (CSIR) procedures among a variety of radiology practices in the USA and Canada. Methods Members of the Society of Abdominal Radiology (SAR) CSIR Emerging Technology Commission (ETC) were sent an eight-question survey about what PPE they were required to use during common CSIR procedures: paracentesis, thoracentesis, thyroid fine needle aspiration (FNA), superficial lymph node biopsy, deep lymph node biopsy, solid organ biopsy, and ablation. Types of PPE evaluated were sterile gloves, surgical masks, gowns, surgical hats, eye shields, foot covers, and scrubs. Results 26/38 surveys were completed by respondents at 20/22 (91%) institutions. The most common PPE was sterile gloves, required by 20/20 (100%) institutions for every procedure. The second most common PPE was masks, required by 14/20 (70%) institutions for superficial and deep procedures and 12/12 (100%) institutions for ablation. Scrubs, sterile gowns, eye shields, and surgical hats were required at nearly all institutions for ablation, whereas approximately half of institutions required their use for deep lymph node and solid organ biopsy. Compared with other types of PPE, required mask and eye shield use showed the greatest increase during the SARS-CoV-2 pandemic. Conclusion PPE use during common cross-sectional procedures is widely variable. Given the environmental and financial impact and lack of consensus practice, further studies examining the appropriate level of PPE are needed. Graphical abstract

We report a surgical case of bronchial artery aneurysm (BAA) that directly connected to a pulmonary artery and a pulmonary vein through an abnormal vessel. It was complicated by racemose hemangioma. This is a rare vascular malformation. An 82-year-old female had a large BAA that was found incidentally. First, we consider treating the BAA with embolization by interventional radiology (IVR). However, because of strong meandering of the bronchial artery, we could not advance a microcatheter into the BAA. Therefore, a surgical operation was performed through a standard posterior lateral thoracotomy. The BAA was located between the upper and lower lobes and directly connected to the pulmonary artery. Some bronchial artery branches that provided inflow to the aneurysm were ligated, and the abnormal vessel that connected the BAA to the upper pulmonary vein was ligated easily. A fistula between the BAA and pulmonary artery was sutured by the cardiovascular surgeon using an artificial cardiopulmonary device, with permissive stenosis of A2b (ascending A2).

Despite advances in gastrointestinal endoscopic technology, the management of malignant hilar biliary obstruction continues to be a challenge for advanced endoscopists. There has been ongoing debate regarding the optimal modality for both diagnostic and therapeutic interventions in malignant hilar obstruction. Various approaches including endoscopy, interventional radiology guided interventions and surgery are available. The management of malignant hilar biliary obstruction should include a multidisciplinary approach, and both diagnostic and therapeutic interventions should be planned based on whether patient is a candidate for curative surgical resection or not. Understanding the Bismuth-Corlette classification as well as the liver segmental anatomy is crucial for both surgical planning as well as planning endoscopic drainage. Safe and effective endoscopic drainage of malignant hilar biliary obstruction requires a multidisciplinary approach, detailed understanding of liver as well as ductal anatomy, and careful adaptation of any strategy to the individual patient's condition, anatomy, prognosis, and in collaboration with surgery, oncology, and radiology. In this article we review the anatomical concepts and technical considerations that are essential to understand while performing endoscopic retrograde cholangiopancreatography in patients with malignant hilar biliary obstruction.

Objectives To assess Prostate Imaging Reporting and Data System (PI-RADS)–trained deep learning (DL) algorithm performance and to investigate the effect of data size and prior knowledge on the detection of clinically significant prostate cancer (csPCa) in biopsy-naïve men with a suspicion of PCa. Methods Multi-institution data included 2734 consecutive biopsy-naïve men with elevated PSA levels (≥ 3 ng/mL) that underwent multi-parametric MRI (mpMRI). mpMRI exams were prospectively reported using PI-RADS v2 by expert radiologists. A DL framework was designed and trained on center 1 data (n = 1952) to predict PI-RADS ≥ 4 (n = 1092) lesions from bi-parametric MRI (bpMRI). Experiments included varying the number of cases and the use of automatic zonal segmentation as a DL prior. Independent center 2 cases (n = 296) that included pathology outcome (systematic and MRI targeted biopsy) were used to compute performance for radiologists and DL. The performance of detecting PI-RADS 4–5 and Gleason > 6 lesions was assessed on 782 unseen cases (486 center 1, 296 center 2) using free-response ROC (FROC) and ROC analysis. Results The DL sensitivity for detecting PI-RADS ≥ 4 lesions was 87% (193/223, 95% CI: 82–91) at an average of 1 false positive (FP) per patient, and an AUC of 0.88 (95% CI: 0.84–0.91). The DL sensitivity for the detection of Gleason > 6 lesions was 85% (79/93, 95% CI: 77–83) @ 1 FP compared to 91% (85/93, 95% CI: 84–96) @ 0.3 FP for a consensus panel of expert radiologists. Data size and prior zonal knowledge significantly affected performance (4%, $$p p < 0.05 ). Conclusion PI-RADS-trained DL can accurately detect and localize Gleason > 6 lesions. DL could reach expert performance using substantially more than 2000 training cases, and DL zonal segmentation. Key Points • AI for prostate MRI analysis depends strongly on data size and prior zonal knowledge. • AI needs substantially more than 2000 training cases to achieve expert performance.

Although ultrasound-guided interventional procedures have resulted in great advances in many fields of medicine, this approach has revolutionized endovascular procedures. This paper aims to review the basic principles to develop a strategy to follow in ultrasound-guided treatments of varices in the lower limbs, as well as to provide a brief overview of the main endovenous techniques available nowadays. We divide these techniques into those that use catheters to occlude straight saphenous axes (thermal / non-thermal ablation) and other options, such as foam sclerotherapy, which can be used in all types of varices, even in those originating in the pelvis.

Hemorrhoids are local vascular structure dilations in the lower rectum, associated with morbidity and reduced quality of life. Endovascular coil or particle embolization of the superior rectal arteries, known as Emborrhoid technique, is a minimally invasive, image-guided therapy that targets the hemorrhoidal plexus and reduces hemorrhage. The purpose of this review was to analyze the results of published studies to determine the efficacy, clinical outcomes, and morbidities associated with the endovascular occlusion of hemorrhoidal arteries for the treatment of internal hemorrhoids. Current evidences suggest that hemorrhoids treated by Emborrhoid technique using microcoils, embolic particles or a combination is safe with no reported serious complications. Hemorrhoid embolization can preserve the anal tone without direct anorectal trauma and maintain the hemorrhoidal tissue in place requiring minimal local wound care on an outpatient basis. However, due to the paucity of high-quality trials, further research is warranted to evaluate its long-term outcomes, compare its efficacy with other treatment modalities, and fully assess its role in the treatment of hemorrhoid.

An 88-year-old man presented to the emergency department with exertional dyspnoea and orthopnoea. Clinical examination revealed mildly raised jugular venous pressure, increased respiratory rate, palpable non-tender hepatomegaly and reduced right basal breath sounds. Ultrasonography showed a large right simple hepatic cyst, multiple small left hepatic and renal cysts. A non-contrast CT scan revealed a large, right hepatic thin-walled cyst of volume 4.2 L, exhibiting few thin septae and tiny nodular mural calcifications. Pressure effects were elevated right haemidiaphragm, right atrial compression and adjacent atelectasis. He had a similar episode 2 years ago, treated by percutaneous needle aspiration. Giant simple hepatic cysts are rare and present when symptomatic due to pain, mass effect on adjacent organs, infection or rupture. These may unusually cause dyspnoea or orthopnoea by compressing cardiac chambers. Simple aspiration has a high recurrence rate. Percutaneous sclerosant injection, laparoscopic deroofing and cystectomy are better treatment modalities.

An 83-year-old man experienced left upper limb uncontrolled movements preceded by intense gasping during night rest, which progressed to unconsciousness and respiratory arrest requiring intubation. He was diagnosed with acute stroke due to distal occlusion of the basilar artery and received indication for endovascular thrombectomy. Standard endovascular approach includes percutaneous puncture of the femoral or radial arteries; however, the presence of unfavourable vascular anatomies (stenotic origin and tortuosity) did not allow catheterisation of the intracranial vessels through conventional access, and based on the consistent time lapse from onset of symptoms and deterioration of the clinical condition, a direct right vertebral artery ultrasound-guided puncture was performed. After one attempt of a triaxial technique, a complete recanalisation of the basilar artery and of its distal branches was achieved. Direct percutaneous puncture of the vertebral artery represents a rescue access strategy for treatment of posterior circulation stroke when other routes are not feasible.

Horseshoe kidney, representing abnormal fusion of the inferior renal poles, is a rare anatomic anomaly posing challenges in the setting of surgical abdominal aortic aneurysm repair. Historically, open repair has been the favoured surgical approach. However, due to the location of the renal isthmus and wide-ranging variation in anomalous renal vasculature, endovascular aneurysm repair (EVAR) has emerged as a popular, less invasive alternative. We describe one of the first published cases of two-fenestration EVAR in a patient with concomitant horseshoe kidney, followed by a discussion of current trends in surgical management. With the increasing availability to customise fenestrated grafts to patients’ unique anatomy, this advanced EVAR technique may emerge as the preferred approach in certain cases.

Knotting or twisting of the peritoneal catheter around a bowel segment, causing bowel obstruction and necrosis, is extremely rare. Only six cases have been reported in the literature. This report described the second case of an adult patient with spontaneous knotting of the peritoneal catheter around a small-bowel segment, causing bowel obstruction and necrosis. The presentation of a knotted ventriculoperitoneal shunt around a bowel loop is stereotypical. Treatment and general recommendations have been made to help guide clinicians when encountering such cases. Evidence of small-bowel obstruction in a twisted, coiled or knotted peritoneal catheter may need surgical intervention. In the setting of progressive abdominal manifestations, knotting of the peritoneal catheter around bowel loops may cause bowel obstruction and may present with acute life-threatening manifestations. Efficient and expedite diagnosis should be made to coordinate multispecialty intervention and follow-up appropriately.

Last few decades have seen changes in the approach toward the management of gallbladder cancer (GBCA). Availability of high-definition imaging modalities and accurate interpretations of their findings have helped in early and accurate diagnosis. A structured approach toward the disease with the aid of clinical, noninterventional/interventional radiology and laparoscopic findings has helped surgeons to choose between an aggressive approach of radical cholecystectomy for those with a resectable growth and suitable palliation for those who are unlikely to benefit from therapeutic laparotomy, thereby helping in proper and judicious utilization of health-care resources. Better understanding of the tumor biology is encouraging oncologists for trials with different targeted therapies in advanced disease. This review addresses some of the key issues related to the management of GBCA based on extensive search of available literatures and current international guidelines.

A Scoping Review that aims to map the following objectives regarding Blunt Thoracic Aortic Injury (BTAI) patients treated with Thoracic Endovascular Repair (TEVAR) via appraisal of all forms of original literature published ≥2005: reporting details & rationale of surveillance strategies, along with congruence versus deviance of stated surveillance regimens with clinical practice guidelines; reporting details of follow-up, duration, loss to follow-up, & reasons for attrition; and reporting details of type & timing of adverse events & reinterventions peri- & post-TEVAR, in conjunction with implicated FDA-approved stent-graft designs. Additionally, quality control issues of the literature are heavily addressed via evaluation of variables’ reporting details.

Aim To assess the impact of the COVID-19 outbreak on trends in hospital admissions and number of diagnostic and therapeutic procedures in the largest tertiary vascular center in Hungary. Patients and Methods A retrospective analysis was carried out. The first wave of the COVID-19 pandemic occurred approximately from March 15 until June 1 in Hungary. We have compared the same period of 2020 to 2019. Electronic medical records were reviewed for the clinical status of the patients and treatment-related information. Results The total number of diagnostic angiographies and therapeutic interventions in 2020 (N = 233) decreased significantly (P = 0.046) compared to 2019 (N = 373). The ratio of Fontaine stage I–II cases to Fontaine stage III–IV cases for both diagnostic angiographies and therapeutic interventions was significantly lower (OR, 2.11; 95% CI, 1.26–3.59; P = 0.007 and OR, 3.22; 95% CI, 1.67–6.52; P < 0.001) in 2020 (0.36 and 0.27) than in 2019 (0.77 and 0.89). There was also a negative but not significant change in the number of supra-aortic (including internal carotid artery stenting) (P = 0.128) and other vascular therapeutic interventions (superior vena caval stenting, hemodialysis access percutaneous transluminal angioplasty [PTA], visceral artery/vein PTA/stenting, embolization) (P = 0.452) in 2020 (N = 16 and N = 21) compared to 2019 (N = 39 and N = 37). Conclusion The first wave of the COVID-19 pandemic had a negative effect on the total number of endovascular procedures in the largest tertiary vascular center in Hungary.

Purpose This article assesses the safety and utility of transhepatic drainage of deep seated postoperative intra-abdominal collections under computed tomography (CT) guidance in a short series. Methods This retrospective study included five patients (mean age: 45.8 years; 3 males, 2 females) who underwent CT-guided transhepatic drainage of postoperative abdominal abscess in our department between April 2019 and December 2020. The clinical and surgical details and the details of the transhepatic drainage procedure were evaluated along with success rates and complications. Results The surgical procedures were Whipple's pancreaticoduodenectomy in four patients and gastrectomy in one patient. Four out of five abscesses were drained through the right lobe of liver, while one was through the left lobe with a technical success rate of 100%. The mean total time for catheter drainage procedure including patient positioning and preparation was 29.2 minutes. None of the patients had procedure-related complications. Mean duration of catheter drainage was 12 days. All patients had complete resolution of symptoms after drainage and the clinical success rate was 100%. Conclusion Transhepatic approach is safe and effective for the drainage of inaccessible postoperative abdominal collections or abscesses where a standard percutaneous approach is not possible.

Pancreatic cancer is the 7th leading cause of death due to cancer in industrialized countries and the 11th most common cancer globally, with 458918 new cases (2.5% of all cancers) and 432242 deaths (4.5% of all cancer deaths) in 2018. Unfortunately, 80% to 90% of the patients present with unresectable disease, and the reported 5-year survival rate range between 10% and 25%, even after successful resection with tumor-free margins. Systemic chemotherapy, radiotherapy, and minimally invasive image-guided procedures that have emerged over the past years, are used for the management of non-operable PC. This review focuses on currently available non-surgical options of locally advanced pancreatic cancer.