2024 Volume 77 Issue 2 Pages 96-100
Low-grade appendiceal mucinous neoplasm (LAMN) is an appendiceal mucinous tumor that is sometimes noted after appendectomy. As there are no established surgical procedures or postoperative follow-up methods for LAMN, we performed surveillance for three patients with myxoma of the appendix for 60 months according to the 2014 Edition of the Colorectal Cancer Treatment Guidelines. Case 1 was a 63-year-old woman who visited our hospital with a chief complaint of appendiceal enlargement. She underwent laparoscopic ileocecal resection for suspected appendiceal myxoma. Case 2 was a 27-year-old man who presented with a chief complaint of right lower quadrant pain and underwent laparoscopic appendectomy for a diagnosis of acute appendicitis. Case 3 was a 74-year-old man in whom elective laparoscopic cecectomy was performed following conservative treatment for acute appendicitis. The postoperative pathological diagnosis was LAMN in all three cases, and the margins were negative in all three. No recurrence of LAMN was observed during surveillance for up to 60 months. As no consensus has been reached regarding the method and duration of surveillance for LAMN, we report our experience with these cases along with a review of the literature.
