Abstract Library

#4565 Evaluation of duodenal neuroendocrine tumours according to MCSC register

Introduction: Neuroendocrine tumours (NETs) of the duodenum are relatively rare tumours and account for 4% of all gastroenteropancreatic NETs.

Conference:

Presenting Author:

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

Keywords: duodenal, register, atrophic gastritis, NET, grade, papilla,

#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,

#4347 Mixed neuroendocrine non-neuroendocrine neoplasm associated with gastric autoimmunity: A clinicopathological analysis of two cases

Introduction: Two cases of mixed neuroendocrine tumour - gastric adenocarcinoma were found in patients with autoimmune atrophic gastritis. Both components expressed synaptophysin, initially suggesting a neuroendocrine tumour diagnosis. However, further examination confirmed the presence of gastric adenocarcinoma of fundic gland type.

Conference:

Presenting Author:

Authors: Huang D, Chen X, Chu J, Ma M,

Keywords: Mixed neuroendocrine tumour, autoimmune atrophic gastritis, gastric adenocarcinoma of fundic gland type,

#4307 Predictive value of pepsinogen I and I/II ratio for diagnosing autoimmune gastritis

Introduction: Autoimmune gastritis (AIG) is sometimes difficult to diagnose.

Conference:

Presenting Author:

Authors: Hu H, Chen C, Zhang Q, Li P,

Keywords: autoimmune gastritis, pepsinogen 1, pepsinogen 1/2 ratio, gastrin,