Antral plexiform fibromyxoma: case report of a rare mesenchymal neoplasm.

Plexiform fibromyxoma (PF) is a rare mesenchymal neoplasm of the stomach usually arising in the gastric antrum, and its main differential diagnosis is gastrointestinal stromal tumor. Most common symptoms are hematemesis, anemia. Immunohistochemically, positivity for smooth muscle actin (SMA) and vimentin suggests the diagnosis of PF.

Multicenter Study on the Performance of Imaging Tests Compared to Endosonography-Guided Fine-Needle Aspiration in the Diagnosis of Solid Pseudopapillary Neoplasms of the Pancreas.

Introduction: Imaging diagnosis of pancreatic solid-pseudopapillary neoplasms (SPNs) is difficult. Preoperative diagnosis by endosonography-guided fine-needle aspiration (EUS-FNA) is possible and has been reported in the literature in pancreatic tumors. However, its usefulness is still controversial.

Diagnosis of pancreatic solid pseudopapillary neoplasms using cell-blocks and immunohistochemical evaluation of endoscopic ultrasound-guided fine needle aspiration biopsy specimens.

Introduction: Preoperative diagnostic imaging of pancreatic solid pseudopapillary neoplasms (SPNs) is challenging. A few studies have investigated the role of endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) for the diagnosis of SPN. We investigated the diagnostic yield of cell-blocks and immunohistochemistry (IHC) for SPN using EUS-FNA specimens without cytological evaluation.

Cyst fluid glucose: An alternative to carcinoembryonic antigen for pancreatic mucinous cysts.

Pancreatic cystic lesions (PCLs) have been increasingly recognized in clinical practice. Although inflammatory cysts (pseudocysts) are the most common PCLs detected by cross-sectional imaging modalities in symptomatic patients in a setting of acute or chronic pancreatitis, incidental pancreatic cysts with no symptoms or history of pancreatitis are usually neoplastic cysts. For these lesions, it is imperative to identify mucinous cysts (intraductal papillary mucinous neoplasms and mucinous cystic neoplasms) due to the risk of their progression to malignancy.

Differential diagnosis of mesenchymal neoplasms of the digestive tract by cell block and immunohistochemistry.

Objectives: To evaluate the diagnostic yield of the cell block (CB) technique with immunohistochemistry in patients with mesenchymal neoplasms of the gastrointestinal tract collected by endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA).

Methods: Tissue samples from consecutive patients with subepithelial lesions collected by EUS-FNA, without analysis by on-site cytopathology, were evaluated by the same pathologist only using CBs in AAF fixative. Sections were stained with haematoxylin-eosin and underwent complementary immunohistochemical staining for SMA, CD117, DOG-1 and S100 in the presence of mesenchymal neoplasms.

The role of linear endosonography for the diagnosis of acute pancreatitis when other methods failed.

Background And Study Aims: Acute pancreatitis has no obvious cause after clinical, laboratory and radiologic investigation in 10%-30% of patients, and the diagnosis of idiopathic pancreatitis is given. This study investigated the role of linear EUS for identification of possible causes for acute pancreatitis when other investigative methods failed.

Patients And Methods: Between June 2012 and March 2017, 35 patients [25 women; mean age: 51.

EUS-FNA WITH 19 OR 22 GAUGES NEEDLES FOR GASTRIC SUBEPITHELIAL LESIONS OF THE MUSCLE LAYER.

Background: Tissue diagnosis is required for gastric subepithelial lesions for differential diagnosis of GISTs. However, there has not been consensus about the best needle for EUS-guided sampling of these lesions.

Aim: To evaluate the diagnostic yield of EUS-FNA for gastric subepithelial lesions of the proper muscle layer with large-bore 19 gauge needles.

Different options of endosonography-guided biliary drainage after endoscopic retrograde cholangio-pancreatography failure.

Aim: To investigate the success rates of endosonography (EUS)-guided biliary drainage (EUS-BD) techniques after endoscopic retrograde cholangiopancreatography (ERCP) failure for management of biliary obstruction.

Methods: From Feb/2010 to Dec/2016, ERCP was performed in 3538 patients, 24 of whom (0.68%) suffered failure to cannulate the biliary tree.

II Brazilian consensus statement on endoscopic ultrasonography.

Background And Objectives: At the time of its introduction in the early 80s, endoscopic ultrasonography (EUS) was indicated for diagnostic purposes. Recently, EUS has been employed to assist or to be the main platform of complex therapeutic interventions.

Methods: From a series of relevant new topics in the literature and based on the need to complement the I Brazilian consensus on EUS, twenty experienced endosonographers identified and reviewed the pertinent literature in databases.

Observer agreement for diagnosis of colorectal lesions with analysis of the vascular pattern by image-enhanced endoscopy.

Background/aims: Image-enhanced endoscopy (IEE) can differentiate neoplastic from non-neoplastic colorectal lesions through indirect analysis of pit patterns and microvascular architecture. We evaluated the accuracy of Flexible Spectral Imaging Color Enhancement (FICE) in differentiating neoplastic from non-neoplastic lesions and observer agreement in the analysis of capillary pattern of colorectal lesions.

Methods: A prospective double-blind trial was conducted in two referral endoscopy centers.

Malignancy in large colorectal lesions.

Context: The size of colorectal lesions, besides a risk factor for malignancy, is a predictor for deeper invasion objectives: To evaluate the malignancy of colorectal lesions ≥20 mm.

Methods: Between 2007 and 2011, 76 neoplasms ≥20 mm in 70 patients were analyzed.

Results: The mean age of the patients was 67.

A prospective randomized trial of intralesional triamcinolone injections after endoscopic dilation for complex esophagogastric anastomotic strictures: steroid injection after endoscopic dilation.

Background And Aims: Postoperative esophageal strictures frequently recur. We assessed the efficacy of injecting triamcinolone after bougie dilation in comparison to dilation alone.

Methods: In a double-blind randomized fashion, 19 patients (68% male with mean age of 53-years old) with non-dilated esophagogastric complex strictures after esophagectomy with gastric pull-up were assigned to receive dilation alone (control) or 40 mg of triamcinolone at the borders of the wall lacerations caused by the bougienage in each dilation session during the study follow-up.

Prevalence of non-polypoid colorectal neoplasms in southern Brazil.

Background And Aim: Several studies suggest that non-polypoid lesions (NPL) show higher aggressiveness than polypoid lesions, particularly depressed lesions. The present study aimed to assess the prevalence of NPL and the presence of advanced histology in a Brazilian population.

Methods: Two thousand and sixty-seven superficial neoplastic lesions diagnosed in 1135 patients were analyzed.

Impact of endoscopic ultrasound-guided fine-needle aspiration on incidental pancreatic cysts. A prospective study.

Objective: Widespread use of imaging procedures has promoted a higher identification of incidental pancreatic cysts (IPCs). However, little is known as to whether endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) could change the management strategy of patients having IPCs. This study has aimed to evaluate the management impact of EUS-FNA on IPCs.

Pancreatic splenosis mimicking neuroendocrine tumors: microhistological diagnosis by endoscopic ultrasound guided fine needle aspiration.

Context: Pancreatic splenosis is a benign condition which can mimic a pancreatic neoplasm.

Objective: To describe the role of the endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) of pancreatic nodules suspicious for pancreatic splenosis.

Method: From 1997 to 2011, patients with pancreatic solid tumors suspicious for splenosis by computed tomography and/or magnetic resonance imaging were referred to EUS-FNA.

Accuracy of endoscopic ultrasound-guided fine-needle aspiration in the suspicion of pancreatic metastases.

Background: Metastases to the pancreas are rare, and usually mistaken for primary pancreatic cancers. This study aimed to describe the histology results of solid pancreatic tumours obtained by endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) for diagnosis of metastases to the pancreas.

Methods: In a retrospective review, patients with pancreatic solid tumours and history of previous extrapancreatic cancer underwent EUS-FNA from January/1997 to December/2010.

Digital chromoendoscopy for diagnosis of diminutive colorectal lesions.

Introduction. To compare the accuracy of digital and real-time chromoendoscopy for the differential diagnosis of diminutive (<5 mm) neoplastic and nonneoplastic colorectal lesions. Materials and Methods.

Computerized virtual chromoendoscopy versus indigo carmine chromoendoscopy combined with magnification for diagnosis of small colorectal lesions: a randomized and prospective study.

Background And Study Aims: Magnifying colonoscopy with indigo carmine dye and the analysis of the capillary and the pit patterns by computed virtual chromoendoscopy (Fujinon Intelligent Color Enhancement, FICE) with magnification are effective for the differential diagnosis of neoplastic and non-neoplastic lesions. This study aimed to compare the accuracy of virtual and real chromoendoscopy in differentiating neoplastic and non-neoplastic colorectal lesions.

Patients And Methods: A prospective randomized trial of magnification colonoscopy with targeted FICE (Group I - 72 patients/111 lesions) versus magnification colonoscopy with targeted indigo carmine dye (Group II - 72 patients/137 lesions) was performed in consecutive patients with lesions 1 cm or less.