Abstract Library

#4555 Assessment of gastric mucosa conditions changes in patients with gastric neuroendocrine neoplasia type 1 during gastroprotective therapy

Introduction: Currently, the incidence of gastric neuroendocrine neoplasia (gNEN) has increased significantly. Most gNEN are developed on the background of chronic atrophic gastritis (about 90%). Despite this, the role of chronic atrophic gastritis treatment (gastroprotective therapy) in dynamic of gNEN remains unexplored.

Conference:

Presenting Author: Konyakhina A

Authors: Konyakhina A, Feidorov I, Salimgereeva D, Petrova A,

Keywords: gNEN, atrophic gastritis, OLGA, rebamipide,

#4441 Gastric neuroendocrine neoplasms in younger patients: A retrospective single-centre study

Introduction: Gastric neuroendocrine neoplasms (gNENs) are rare neoplasms arising from stomach enterochromaffin-like (ECL) cells. Type I gNENs are the most common type, typically indolent and arising in the context of chronic atrophic gastritis (CAG). While type I gNENs are generally diagnosed in pts over 50, their occurrence in younger pts raises concern about the onset of CAG-related complications at an earlier age, potentially affecting tumour growth and clinical outcomes. Young-oriented studies on type I gNETs are still lacking in literature.

Conference:

Presenting Author:

Authors: Romano E, Rinzivillo M, Marasco M, Dell' Unto E, Esposito G,

Keywords: Gastric neuroendocrine neoplasm, Young adults, Chronic Atrophic Gastritis,

#4243 Role of gastric mucosa evaluation in diagnostic of pancreatic neuroendocrine tumors functional status

Introduction: Accessibility of high-precision imaging dramatically increased detection rate of small asymptomatic pancreatic neuroendocrine tumors (PanNETs). Functioning status is indication for surgical treatment with high perioperative risks, while increased level of NET markers could be associated with gastric mucosa atrophy or intake of proton pump inhibitors (PPI) and nor with tumor secretion.

Conference:

Presenting Author:

Authors: Salimgereeva D, Feidorov I, Konyakhina A,

Keywords: PanNET, chronic atrophic gastritis, marker, OLGA, anti-parietal cell antibodies,

#2125 Subtype Classification and Clinicopathological Features of Gastric Neuroendocrine Neoplasms: 400 Cases of Multicenter Retrospective Analysis

Introduction: Definitions of Type 3 gastric NEN (g-NEN) in ENETS Guidelines 2012 and 2016 are ambiguous and controversial, so Four-type classification has been proposed in China.

Conference: 15th Annual ENETSConcerence (2018)

Presenting Author: Li Y

Authors: Li Y, Zhang P, Qiu X, Li X, Zhang Y,

Keywords: gastric nen, subtype classification,

#1741 Complete Remission of Hepatic Metastasis after Total Gastrectomy for a Gastric Carcinoid Tumor Type 1: A Case Report

Introduction: A 58-year-old woman was referred to our hospital for hepatic lesions and thickening of the walls of the stomach detected by abdominal CT scan. An upper GI endoscopy showed a lesion of the body of the stomach and the histopathologic exam documented a well differentiated NET. 68Ga-DOTATOC PET showed pathologic uptake in the stomach and in the liver (3 lesions). Circulating chromogranin A and gastrin were 596 ng/ml and 2283 pg/ml respectively

Conference: 14th Annual ENETSConcerence (2017)

Presenting Author: Smiroldo V

Authors: Smiroldo V, Carnaghi C, Tresoldi A, Lania A, Bonifacio C,

Keywords: gastric, NET, complete remission, gastrin,