A case of low grade appendiceal mucinous neoplasm performed with laparoscopic ileocecal resection due to intussusception

Low-grade appendiceal mucinous neoplasm (LAMN) is a rare disease. The strategy of treatment for LAMN has not been established. We herein present a case of LAMN treated by laparoscopic ileocecal resection with D2 lymph node (LN) dissection, which exhibited invagination. A 59-year-old man visited at our emergency room with intermittent abdominal pain. Abdomino-pelvic computed tomography (CT) revealed suspiciously a diagnosis as intussusception of LAMN into the ascending colon. Emergency laparoscopic operation was performed. A laparoscopic ileocecal resection with D2 LN dissection was performed because swollen lymph nodes were notified around the ileocolic artery. Histologically, he was diagnosed as LAMN, T3, N0, M0, Stage II.