article 2024 Two cases of low-grade appendiceal mucinous neoplasm (LAMN) and LAMN with appendiceal endometriosis that were difficult to distinguish from right ovarian and fallopian tube tumors before laparoscopic surgery ·doi:10.5180/jsgoe.39.2_102 We experienced two cases of low-grade appendiceal mucinous neoplasms (LAMNs) that were difficult to distinguish from right ovarian and fallopian tube tumors.