Abstract
A 57-year-old female was referred to our hospital for further examination of a neuroendocrine tumor (NET) located in the terminal ileum. Colonoscopy revealed a yellowish submucosal tumor of 8 mm in diameter, and magnifying narrow band imaging showed dilated cyan-colored vessels. Abdominal computed tomography showed an enlargement of the ileocolic lymph node 13 mm in diameter. A laparoscopy-assisted ileocecal resection with lymph node dissection was performed. Histological results showed that the invasion of tumor cells was located above the muscularis propria with venous invasion. The mitotic rate was low and the Ki-67 labeling index was less than 2%. The tumor was diagnosed as NET grade 1 with a lymph node metastasis (#202) . No local remnant lesion and metastasis was found during follow-up of 12 months. Small intestinal NET has a high metastatic potential despite its small size. Therefore, radical ileocecal resection and regional lymphadenectomy is recommended according to the consensus guidelines.
