Abstract library

329 results for "sessile serrated lesion".
#2123 Large Cell Neuroendocrine Carcinoma (LCNEC) Associated with a Dysplastic Sessile Serrated Lesion (SSL) and Deficient Mismatch Repair (MMR) Protein: A Case Report.
Introduction: Colorectal poorly differentiated neuroendocrine carcinomas (NECs) are rare, but extremely aggressive. The mechanisms of their carcinogenesis and aggressiveness are still largely unknown. Recently Nobuyoshi Takizawa showed that the molecular features of colorectal NECs are similar to those of adenocarcinoma and not to those of NETs and they were more evident in small cell NECs than in large cell NECs. This is supported by combined cases with conventional adenoma/adenocarcinoma and NECs. Stelow et al showed that DNA mismatch repair proteins were intact in 14/15 colorectal small cell NECs. Two cases of LCNECs arising from SSL have been reported so far in the literature.
Conference: 15th Annual ENETS conference (2018)
Category: Case reports
Presenting Author: Dr Tu Vinh Luong
Authors: Luong T V, Nisa Z
#1042 The Challenge of Differential Diagnosis of Solid Pancreatic Lesions in Von Hippel-Lindau. Case Report
Introduction: Von Hippel-Lindau (VHL) is an hereditary syndrome, characterized by a predisposition to develop benign and malignant tumors. Pancreatic involvement is present in 35-70% of cases and include cystic (simple cyst, serous cystoadenoma, mucinous tumor or IPMN) and solid lesions (neuroendocrine neoplasm (NEN), metastatic mass or pancreatic adenocarcinoma). Finally, a solid-type serous cystoadenoma (SSCA) has been reported. Differential diagnosis of these lesions may be difficult.
Conference: 12th Annual ENETS Conference (2015)
Category: Clinical cases/reports
Presenting Author: Alessandra Zilli
#1114 CT Evaluation of Gastric Neuroendocrine Neoplasm Based on WHO 2010 Classification
Introduction: The 2010 WHO classification classifies GEP-NEN into grade 1, 2 and 3.
Conference: 12th Annual ENETS Conference (2015)
Category: Imaging (radiology, nuclear medicine, endoscopy)
Presenting Author: MD Ying Li
Authors: Li Y, Li Z W, Tang L, Cao K, ...
#76 Role of contrast-enhanced ultrasonography in the differential diagnosis of the pancreatic and hepatic lesions
Introduction: Contrast-enhanced ultrasonography (CEUS) is a new promising tool for the characterization of pancreatic lesions. This technique allows for highlighting the micro-vascularization of a lesion, especially with the use of second generation contrast media, characterized by harmonic responses at low acoustic pressures. Pancreatic endocrine tumors (PET)s were reported to have a peculiar behavior at CEUS, consisting of a higher enhancement compared to normal pancreas in the arterial phase and a rapid washout.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: Dr Francesco Milone
#688 Does Small Mean Benign? Not for the WHO 2010 Classification of Gastrointestinal Neuroendocrine Tumors (NETs): A Case Report of a Small Rectal Neuroendocrine Neoplasm (NEN) with Distant Metastatic Spread
Introduction: The gastrointestinal tract is the most common site of primary NETs, just over a quarter of which are rectal. According to the WHO 2000/2004 non-functioning NETs, ≤2cm with no muscularis propria or vascular invasion are classified as well differentiated (WD) NET with benign behavior. However, several case series report metastatic spread from NETs in this category. In 2010, a new WHO classification was introduced with the premise that all NETs were considered malignant with metastatic potential.
Conference: 10th Annual ENETS Conference (2013)
Category: Pathology, grading, staging
Presenting Author: Dr Tu Vinh Luong
#1715 Recurrence of 6mm Rectal Neuroendocrine Tumor, 14 Years after Excision
Introduction: Rectal neuroendocrine tumours (NET) constitute 25% of all the digestive NET. Predictive factors of distant metastasis are: size greater than 1cm, high proliferative index and muscularis or lymphovascular invasion. In the absence of these criteria, some authors advocate there is no need for long-term follow-up.
Conference: 14th Annual ENETS conference (2017)
Category: Clinical cases/reports
Presenting Author: Bernardo Marques
#1061 Transcatheter Arterial Chemoembolization for Unresectable Metastatic Hepatic Lesions of Pancreatic Neuroendocrine Tumors
Introduction: The blood supply of metastatic hepatic neuroendocrine tumors is mainly supplied by hepatic arteries. For unresectable metastatic NETs, selective embolisation of the hepatic arteries may be therapeutic.
Conference: 12th Annual ENETS Conference (2015)
Category: Medical treatment - Others
Presenting Author: Bao Xin
Authors: Xin B, Lou W, Ji Y, Liu L X, ...
Keywords: pnet, hepatic lesion, tace
#393 Tumor Response Assessment to Treatment with [177Lu-DOTA0,Tyr3]Octreotate in Patients with Gastroenteropancreatic Neuroendocrine Tumors: Differential Response of Bone Versus Soft Tissue Lesions
Introduction: Little is known about the treatment response of bone lesions to treatment with [177Lu-DOTA0,Tyr3]octreotate (177Lu-octreotate).
Conference: 9th Annual ENETS Conference (2012)
Category: Clinical
Presenting Author: Esther I. Van Vliet
#1259 Expressions of ATRX and DAXX in Hepatic Metastatic Pancreatic Nonfunctional Neuroendocrine Neoplasms
Introduction: Loss of ATRX or DAXX is common in well-differentiated pancreatic neuroendocrine neoplasms, and is correlated with higher tumor stage and shorter survival time.
Conference: 13th Annual ENETS conference (2016)
Category: Biomarkers
Presenting Author: Bao Xin
Authors: Xin B, Lou W, Ji Y, Xie Y, ...
#2172 Well-Differentiated Neuroendocrine Lesions in Inflammatory Bowel Disease
Introduction: Whether inflammatory Bowel disease (IBD) increases the risk of developing neuroendocrine tumors (NETs) is not clear. NETs are rare in IBD, though one recent report suggests that NETs are 15 times more frequent in patients with Crohn’s disease. Besides NETs, which are discrete mass-forming lesions, microscopic neuroendocrine cell clusters or micronests (NEMs), difficult to measure, are sometimes observed in the lamina propria/muscularis mucosae of IBD patients.
Conference: 15th Annual ENETS conference (2018)
Category: Pathology - grading, staging
Presenting Author: Deepti Dhalld
Authors: Dhall D, Wong M, Larson B, ...