Gastric Neuroendocrine Tumor Mimicking Gastrointestinal Stromal Tumor: A Case Report

Gastric neuroendocrine tumors (NETs) are rare lesions that arise from enterochromaffin-like cells of the gastric mucosa. Gastric NETs are classified into 3 types of NETs and poorly differentiated neuroendocrine cancers. Most gastric NETs usually present as hemispherical, yellowish, polypoid lesions with a central depression and often as subepithelial tumors (SETs) because they are confined within the submucosal layer. Here, we report a case of gastric NET presenting as SET mimicking a gastrointestinal stromal tumor (GIST). Endoscopy revealed a 2.3-cm-sized SET with intact surface mucosa, and endoscopic ultrasonography showed a homogeneous hypoechoic lesion with a well-circumscribed margin. Typical features of gastric NET, such as yellowish mucosal changes or central ulceration, were not observed. GIST was suspected, and a laparoscopic wedge resection was performed. The final diagnosis was gastric NET with grade 2 differentiation.

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• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch

References and Relationships

• Bibliographic citation: Gastric Neuroendocrine Tumor Mimicking Gastrointestinal Stromal Tumor: A Case Report ; volume:14 ; number:3 ; year:2021 ; pages:1271-1276 ; extent:6 ; Case reports in oncology ; 14, Heft 3 (2021), 1271-1276 (gesamt 6)

Contributors, Places and Time

• Creator: Lee, Jin ; Oh, Sung Jin

Further information

• DOI: 10.1159/000518078
• URN: urn:nbn:de:101:1-2022011223420528748487
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.