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,

#4233 Characteristics of gastric neuroendocrine tumors type 1

Introduction: Gastric neuroendocrine tumors type 1 (gNET 1) are the most prevalent among other gNET. These neoplasms demonstrate low growth rate and low malignant potential. Recent publications describe polymorphism of gNET 1, which may indicate a various course of the disease.

Conference:

Presenting Author: Konyakhina A

Authors: Konyakhina A, Feidorov I, Salimgereeva D,

Keywords: gNEN, atrophic gastritis, prognosis,

#4221 Assessing the frequency of type I gastric neuroendocrine neoplasms in autoimmune atrophic gastritis: A multi-center study in Italy

Introduction: In autoimmune atrophic gastritis (AAG), mucosa morpho-functional changes lead to hypo-achlorhydria, hypergastrinemia, and enterochromaffin-like (ECL) cells proliferation, escalating the risk of type I gastric neuroendocrine neoplasms (gNENs). Longitudinal studies on the AAG-gNENs association are scanty.

Conference:

Presenting Author: Gallo C

Authors: Massironi S, Gallo C, Lahner E, Sciola V, Cavalcoli F,

Keywords: neuroendocrine tumor, atrophic gastritis, autoimmune gastritis, gastrin,

#4154 Gastric mucosa conditions during atrophic gastritis and gastric neuroendocrine neoplasia type 1 (gNEN 1)

Introduction: Worldwide frequency of neuroendocrine tumors increased, which is associated with improved approaches to the diagnosis of chronic diseases of the upper digestive tract. Management of these neoplasms in real clinical practice can be difficult.

Conference:

Presenting Author: Konyakhina A

Authors: Konyakhina A, Feidorov I, Salimgereeva D,

Keywords: gNEN, atrophic gastritis, OLGA, rebamipide,