title: Intramucosal gastric mixed adenoneuroendocrine carcinoma completely resected with endoscopic submucosal dissection.
abstract: Composite tumors in the stomach composed of adenocarcinoma and neuroendocrine carcinoma are rare. We herein report a case of intramucosal gastric mixed adenoneuroendocrine carcinoma (MANEC) that was treated with endoscopic submucosal dissection (ESD). A 77-year-old man who had previously received ESD for early gastric adenocarcinoma underwent esophagogastroduodenoscopy for screening, which showed a depressed lesion on the lesser curvature of the antrum. The tumor was removed en bloc via ESD and pathologically diagnosed as MANEC. The tumor was located within the mucosal layer, and no lymphovascular invasion was evident. Seven months after the ESD procedure, the patient is currently feeling well without recurrence or metastasis.
authors: Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Japan.
authors: Yasushi
authors: Y
authors: Yamasaki
authors: Junichiro
authors: J
authors: Nasu
authors: Kou
authors: K
authors: Miura
authors: Yoshiyasu
authors: Y
authors: Kono
authors: Hiromitsu
authors: H
authors: Kanzaki
authors: Keisuke
authors: K
authors: Hori
authors: Takehiro
authors: T
authors: Tanaka
authors: Masahide
authors: M
authors: Kita
authors: Takao
authors: T
authors: Tsuzuki
authors: Minoru
authors: M
authors: Matsubara
authors: Seiji
authors: S
authors: Kawano
authors: Yoshiro
authors: Y
authors: Kawahara
authors: Masahiro
authors: M
authors: Tabata
authors: Hiroyuki
authors: H
authors: Okada
authors: Kazuhide
authors: K
authors: Yamamoto
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology / Q000601:surgery*; D000368:Aged; D018278:Carcinoma, Neuroendocrine / Q000473:pathology / Q000601:surgery*; D004210:Dissection; D005753:Gastric Mucosa / Q000473:pathology; D005773:Gastroscopy / Q000379:methods*; D006801:Humans; D008297:Male; D013274:Stomach Neoplasms / Q000473:pathology / Q000601:surgery*