Search

Sarcomatoid malignant mesothelioma (MM) is a rare and aggressive disease, and its diagnosis is challenging. A 60-year-old man presented with a recurrent subcutaneous mass in his right back after the initial resection. A chest computed tomography (CT) scan found right pleural thickening, nodular pleural thickening, pleural effusion, mediastinal, and right infraclavicular lymph nodes enlargement, which indicated a right pleura MM. Immunohistochemical stains of the resected mass showed sarcomatous atypical spindle cells, which were positive for pan-CKs (clone Anti-cytokeratin cocktail AE1/AE3), cytokeratin 5/6 (CK5/6), Wilm’s tumor 1, podoplanin, vimentin and programmed death-ligand 1 (PD-L1), and negative for Napsin A, thyroid transcription factor 1, CDX 2, calretinin and desmin, and fluorescent in situ hybridization detected homozygous p16/cyclin-dependent kinase inhibitor 2A ( p16/CDKN2A) deletion. The association of the chest CT features and the pathological assessment confirmed metastatic MM in the subcutaneous layer of the back. Moreover, positron emission tomography–CT showed multiple metastases in his brain. He developed massive right pleural effusion and chest tightness soon, and the mass kept growing despite local and systemic treatments. The patient die of pulmonary failure in 3 months.

Introduction Gastrointestinal stromal tumors (GISTs), with a primary occurrence in the duodenum and proximal jejunum, are rare and treatment is poorly understood. This study aimed to evaluate the main factors influencing the prognosis of GIST resection in this complex anatomical structure. Materials and methods This retrospective study included 47 patients who underwent surgery for primary GIST of the duodenum (20) and proximal jejunum (27) between 2012 and 2017. Perioperative clinical data as well as relapse and survival information were collected. Results All patients underwent negative margin resection (R0) of duodenal and proximal jejunum GISTs. Complications occurred more frequently in treatment of duodenal GISTs than proximal jejunum GISTs (p = 0.003). GISTs in D3 (the 3rd portion of duodenum) were related to larger tumor size (p = 0.001), higher probability of severe complication rate (p = 0.042), longer hospital stays (p = 0.023) and fasting time (p = 0.020). More complications were found for patients with digestive reconstruction than limited resection (p = 0.010). Additionally, patients with a tumor mass larger than 5 cm or a mitotic index greater than 5 mitoses/50 HPFs showed poorer therapeutic outcomes. The 1- and 3-year overall survival was 97.9% and 86.1%, respectively and were not influenced by operation type (p = 0.061) or GIST position (p = 0.447). Conclusion With negative operational margins, limited resection is a safe and feasible procedure for duodenal and proximal jejunum GIST patients and unnecessary digestive reconstruction should be avoided. Considering the severe complication rate, resection for GISTs in D3 should be performed with care.

We have demonstrated a facile synthetic strategy for the direct growth of branched, three dimensional anatase hierarchical hyacinth-like TiO2 (AHHT) arrays on fluorine-doped tin oxide glass substrate via a one-step hydrothermal method. The AHHT arrays with high specific surface area of 79.5 m2 g−1 are 400–650 nm in diameter and about 11 μm in length prepared at 200 °C for 12 h using potassium titanium oxalate, diethylene glycol, sodium chloride, and water. The AHHT arrays are constructed by a large number of nanosheets which are composed of nanowires, as confirmed by field emission scanning electron microscope and transmission electron microscope. A possible formation process of the AHHT arrays has been investigated by means of time-dependent experiment. Dye-sensitized solar cell based on the AHHT arrays exhibits an efficiency of 6.13% because of the synergistic effects of superior electron transfer, higher surface area and efficient light scattering.

Background: Whether the presence of postoperative complications was associated with poor prognosis of gastric carcinoma (GC) patients remain controversial. This meta-analysis was designed and reported to compare the survival difference between patients with complications and non-complications. Methods: Cochrane Library, PubMed and Embase databases were comprehensively searched for published literatures to review current evidence on this topic. The survival data were extracted, and a random-effect or fixed-effect model was used to analyze the correlation between postoperative complications and oncologic outcome of GC patients. Results: Of all studies identified, 32 were eligible for this pooled analysis, with a total of 32,067 GC patients. The incidence of postoperative complications was approximately 12.5% to 51.0%. Among them, infectious complications varied from 3.0% to 28.6%, anastomotic leakage varied from 1.1% to 8.7% and postoperative pneumonia varied from 1.6% to 12.8%. The presence of postoperative complications resulted in a significant poorer overall survival (OS) of gastric carcinoma patients (hazard ratio [HR]:1.49, 95% confidence interval [CI]: 1.33-1.67, P < 0.001). Additionally, the pooled results showed a significant correlation between infectious complications and decreased OS (HR: 1.61, 95%CI: 1.38-1.88, P < 0.001). Concerning specific postoperative complications, we found that both anastomotic leakage (HR: 2.36, 95%CI: 1.62-3.42, P < 0.001) and postoperative pneumonia (HR: 1.74, 95%CI: 1.22-2.49, P = 0.002) impaired the OS of gastric carcinoma patients. Conclusion: Postoperative complications were significantly correlated to recurrence and poor survival in gastric carcinoma patients. To gain a better surgical outcome and long-term oncological outcome, postoperative complications should be minimized as much as possible.

Sarcomatoid malignant mesothelioma (MM) is a rare and aggressive disease, and its diagnosis is challenging. A 60-year-old man presented with a recurrent subcutaneous mass in his right back after the initial resection. A chest computed tomography (CT) scan found right pleural thickening, nodular pleural thickening, pleural effusion, mediastinal, and right infraclavicular lymph nodes enlargement, which indicated a right pleura MM. Immunohistochemical stains of the resected mass showed sarcomatous atypical spindle cells, which were positive for pan-CKs (clone Anti-cytokeratin cocktail AE1/AE3), cytokeratin 5/6 (CK5/6), Wilm's tumor 1, podoplanin, vimentin and programmed death-ligand 1 (PD-L1), and negative for Napsin A, thyroid transcription factor 1, CDX 2, calretinin and desmin, and fluorescent in situ hybridization detected homozygous p16/cyclin-dependent kinase inhibitor 2A (

Background: Sarcomatoid malignant mesothelioma (MM) is a rare and aggressive disease, and its diagnosis is challenging.Case presentation: A 60-year-old man was found a recurrent mass in his right back after the initial resection. A chest CT found right pleural thickening, nodular pleural thickening, pleural effusion, mediastinal and right infraclavicular lymph nodes enlargement, which indicated a right pleura MM. Immunohistochemical (IHC) stains of the resected mass showed sarcomatous atypical spindle cells, which were positive for CK 1/3, CK 5/6, WT1, podoplanin and vimentin, and negative for Napsin A, TTF-1 and CDX2, and fluorescent in situ hybridization (FISH) detected homozygous p16/CDKN2A deletion. The association of the chest CT features and the mass assessment confirmed metastatic MM in the subcutaneous layer of the back. Moreover, PET-CT showed multiple metastases in his brain. He developed massive right pleural effusion and chest tightness soon, and the mass kept growing despite of the local and systemic treatments, and he died from pulmonary failure in 3 months.Conclusion: We described an extremely rare subcutaneous metastasis in the back from sarcomatoid MM. And we made the diagnosis by both histological and molecular analysis of the metastatic lesion. MM patients most likely have subcutaneous metastasis on head, they usually develop pleural effusion, chest pain or dyspnea, and their prognosis is very poor because of late diagnosis and insensitivity to current therapies.

Placement of a nasointestinal ileus tube or long tube for gastrointestinal decompression is a new and effective treatment for small bowel obstruction. Such tubes are associated with very few adverse effects. However, several cases of intussusception caused by a nasointestinal ileus tube have been reported. No general diagnosis or treatment guideline has been established for such a complication. We herein present three cases of intussusception caused by nasointestinal ileus tube placement along with a literature review that summarizes some important clinical characteristics of nasointestinal ileus tube-induced intussusception. A diagnosis of intussusception should be considered if severe abdominal pain and distension recur after insertion of a nasointestinal ileus tube. Computed tomography may assist making the diagnosis, especially in patients with typical features such as the “Target sign,” “Glasses sign,” or “Mickey Mouse sign.” Although nasointestinal ileus tube-induced intussusception is rare, clinicians should give more attention to the risk of this complication.

Background At present, there is no ideal treatment for postoperative ileus (POI) after abdominal surgery. This meta-analysis aims to evaluate the efficacy of electroacupuncture (EA) and transcutaneous electroacupuncture (TEA) in improving postoperative POI. Methods We systematically screened randomized controlled trials (RCTs) from multiple databases and included 15 high quality RCTs. Two investigators independently conducted data extraction, risk of bias assessment and statistical analysis. Meta-analysis was performed by a random- (REM) or fixed-effect (FIXED) model. Results A total of 15 trials involving 965 participates were included. Meta-analysis results favored EA/TEA treatment for POI by analysis of time to first flatus [mean difference (MD) −11.60 h, I2 = 94%, REM)], time to first defecation (MD −12.94 h, I2 = 90%, REM), time to bowel sound recovery (MD −7.25 h, I2 = 85%, REM), time to first oral feeding (MD −15.76 h, I2 = 47%, REM) and length of hospital stay (MD −1.19 d, I2 = 44%, REM). Subgroup analysis of laparoscopic surgery patients also favored EA/TEA by analysis of time to first flatus (MD −2.46 h, I2 = 0%, FIXED), time to first oral feeding (MD −10.73 h, I2 = 0%, FIXED) and length of hospital stay (MD −1.30 d, I2 = 32%, REM). ST36 (Zusanli), ST37 (Shangjuxu) and ST39 (Xiajuxu) are preferred EA/TEA acupoints for treating POI. There was no significant difference in postoperative analgesic consumption between EA and control groups (P = 0.39). No severe adverse events associated with EA/TEA were reported. Conclusion This meta-analysis suggests that EA/TEA is a safe, effective treatment for POI after abdominal surgeries including laparoscopic surgery, and that EA/TEA does not relieve postoperative pain after abdominal surgery. There is significant heterogeneity of research on this subject, thus, a professional consensus is needed to establish a standard protocol for use of this technique.

The prognosis of patients with peritoneal dissemination from gastric cancer is poor, and the underlying molecular mechanism remains unclear. Exosomes, as macromolecular phospholipid bilayer vesicles comprising of proteins, nucleic acids and lipids, serve as mediators of cell-cell communication. Gastric cancer tumor-derived exosomes may be involved in the pathological process of peritoneal dissemination by mediating crosstalk between cancer cells and mesothelial cells, to result in the induction of enhanced tumor growth, migratory, adhesive and invasive abilities, peritoneal fibrosis and apoptosis, mesothelial-to-mesenchymal transition, angiogenesis and chemoresistance. The present review focuses on previous studies addressing the exosome-dependent molecular transfer in peritoneal dissemination in gastric cancer and the potential clinical applications.

The oxidation of chloramphenicol (CAP) by potassium ferrate (VI) in test solution was studied in this paper. A series of jar tests were performed at bench scale with pH of 5–9 and molar ratio [VI/CAP] of 16.3:1–81.6:1. Results showed that raising VI dose could improve the treatment performance and the influence of solution pH was significant. VI is more reactive in neutral conditions, presenting the highest removal efficiency of CAP. The rate law for the oxidation of CAP by VI was first order with respect to each reactant, yielding an overall second-order reaction. Furthermore, five oxidation products were observed during CAP oxidation by VI. Results revealed that VI attacked the amide group of CAP, leading to the cleavage of the group, while benzene ring remained intact.

The determination of hydrogen cyanide in cigarette mainstream smoke has been achieved by ion chromatography (IC) with pulsed amperometric detection (PAD). The proposed method of totally trapping whole cigarette mainstream smoke by Cambridge filters, which are treated with sodium hydroxide/ethanol solution, possesses the advantage of fast analysis time over the widespread used solution absorption method. The possible co-existing interferents are evaluated under the optimized detection conditions and excellent recoveries of cyanide are obtained. The cyanide content of absorption solution can be directly determined by the optimized IC-PAD method without any pretreatments. The linear range is 0.0147-2.45 μg/mL with R² value of 0.9997. The limit of the detection is 3 μg/L for a 25 μL injection loop. The overall relative standard deviation of the method is less than 5.20% and the recovery range from 94.3% to 101.0%. The results obtained from the developed method are in good agreement with that of continuous flow analyzer (CFA) method.

AIM To investigate the efficacy and safety of transcutaneous electroacupuncture (TEA) to alleviate postoperative ileus (POI) after gastrectomy. METHODS From April 2014 to February 2017, 63 gastric cancer patients were recruited from the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China. After gastrectomy, the patients were randomly allocated to the TEA (n = 33) or control (n = 30) group. The patients in the TEA group received 1 h TEA on Neiguan (ST36) and Zusanli (PC6) twice daily in the morning and afternoon until they passed flatus. The main outcomes were hours to the first flatus or bowel movement, time to nasogastric tube removal, time to liquid and semi-liquid diet, and hospital stay. The secondary outcomes included postoperative symptom assessment and complications. RESULTS Time to first flatus in the TEA group was significantly shorter than in the control group (73.19 ± 15.61 vs 82.82 ± 20.25 h, P = 0.038), especially for open gastrectomy (76.53 ± 14.29 vs 87.23 ± 20.75 h, P = 0.048). Bowel sounds on day 2 in the TEA group were significantly greater than in the control group (2.30 ± 2.61/min vs 1.05 ± 1.26/min, P = 0.017). Time to nasogastric tube removal in the TEA group was earlier than in the control group (4.22 ± 1.01 vs 4.97 ± 1.67 d, P = 0.049), as well as the time to liquid diet (5.0 ± 1.34 vs 5.83 ± 2.10 d, P = 0.039). Hospital stay in the TEA group was significantly shorter than in the control group (8.06 ± 1.75 vs 9.40 ± 3.09 d, P = 0.041). No significant differences in postoperative symptom assessment and complications were found between the groups. There was no severe adverse event related to TEA. CONCLUSION TEA accelerated bowel movements and alleviated POI after open gastrectomy and shortened hospital stay.

This study reports a rare case of a 47-year-old female with a gastric glomus tumor who was admitted with epigastralgia. Endoscopic ultrasound revealed a protrusion on the posterior wall of the gastric antrum. Enhanced computed tomography confirmed the presence of a 10-mm mass. The tumor was resected, and immunohistochemistry revealed the tumor to be positive for smooth muscle actin and collagen type IV, and negative for synaptophysin, chromogranin A, laminin, S-100, cluster of differentiation (CD)34, CD31, CD99, cytokeratin (AE1/AE3), desmin and epithelial membrane antigen. The proliferation marker Ki-67 was positive in

The patient bile and its centrifugate were studied by FTIR spectra, UV-Vis spectra, particle size analysis, and zeta potential determination. The result showed that the patient bile was in a heterogenetic and unstable state, and some of the ultramicrons in the patient bile assembled to form precipitate after centrifugalized at different speeds. According to FTIR and UV-Vis spectra, the authors found that the composition of the precipitates was mainly cholesterol, bilirubin, calcium bilirubinate, protein, phospholipid and so on, which was much close to that of the core of patient gallstone. The change in the properties of cholesterol/phospholipid vesicles, and the production of the undissolvable calcium salt in the patient bile had crucial influence on the stability of the patient bile, which played important roles in the core-formation and initial growth of gallstone that were induced by the matrixes such as proteins, phospholipids etc.