Endoscopic ultrasonography features of gastric ectopic pancreas

VernacularTitle:胃异位胰腺的内镜超声图像特征分析
Author: Shengli KUANG ; Bingxi ZHOU ; Yuxiu YANG ; Bing HU
Publication Type:Journal Article
Keywords: Endosonography; Choristoma; Stomach diseases; Ectopic pancreas
From: Chinese Journal of Ultrasonography 2011;20(6):499-501
CountryChina
Language:Chinese
Abstract: Objective To describe the characteristic endoscopic ultrasonography (EUS) features of gastric ectopic pancreas.Methods Totally 23 patients were diagnosed pathologically as having gastric ectopic pancreas.The EUS images of the lesions were retrospectively reviewed regarding layer of origin,size,growth pattern,margin,and internal echo pattern.Results The coincidence of EUS and pathologic diagnosis was 91%(21/23).EUS revealed that the lesions originated from the second,third,and/or fourth layers of the gastric wall.Most lesions were heterogenous,mainly isoechoic.The borders of the lesions were indistinct in 70%(16/23) patients. Anechoic cystic or tubular structures within the lesions appeared in 10 of the 23 lesions(43%).The mean longest/shortest diameter ratio of ectopic pancreas was 1.7.Conclusions Characteristic EUS features of gastric ectopic pancreases include:mural lateral growth pattern,third layer (submucosa) origin,indistinct margin,intermediate echogenecity,anechoic areas,and fourth-layer thickening.Careful assessment of the EUS findings may be a useful aid in the diagnosis of gastric ectopic pancreas.