Early gastric neuroendocrine carcinoma treated with endoscopic submucosal dissection: a case report

A 78-year-old man underwent esophagogastroendoscopy, which revealed a 10 mm 0-IIa+IIc lesion on the posterior wall of the gastric angulus. A biopsy revealed a poorly differentiated adenocarcinoma, but a tendency towards neuroendocrine differentiation was suspected. Endoscopic submucosal dissection (ESD) was performed. The final pathological diagnosis was "4 mm, neuroendocrine carcinoma (NEC), pT1b2, pUL0, Ly0, V0, pHM0, pVM0," and the classification of endoscopic cure was eCuraC-2. Subsequently, a distal gastrectomy was performed with the surgical team. The surgical specimens showed no cancer.