Gastric neuroendocrine tumors display deep invasive features, with amorphous pit and irregular vascular pattern, using narrow-band imaging and magnification

Abstract

Gastric neuroendocrine tumors display deep invasive features, with amorphous pit and irregular vascular pattern, using narrow-band imaging and magnification E-Videos Video 1 Endoscopic aspect and endoscopic submucosal dissection of a grade 1 gastric neuroendocrine tumor. ▶ Fig. 1 Endoscopic aspect of gastric neuroendocrine tumor. a Submucosal nodular aspect with two ulcerations. b Narrow-band imaging (NBI) aspect before removing the mucus cap. c White-light aspect after removing the cap, revealing red vessels. d NBI aspect with amorphous mucosal pattern and irregular "spark-like" capillary vessels (arrow).

Endoscopic characterization of rectal neuroendocrine tumors with virtual chromoendoscopy: differences between benign and malignant lesions

“…We report here a rare case of an invasive rNET in a 59-year-old patient that was resected by endoscopic submucosal dissection after multidisciplinary discussion in order to evaluate its invasion degree and its metastatic potential. Its endoscopic appearance was different from localized rNETs, showing mucosal ulceration owing to a large smooth nodule, as previously described in gastric G2 NETs [2]. The size of the lesion was approximately 15 mm.…”