[A Case of Low-Grade Appendiceal Mucinous Neoplasm-A Complex Preoperative Diagnosis]

A 63-year-old woman was admitted to our hospital with suspected appendicitis. Abdominal CT revealed an enlarged appendix, and findings consistent with some small nodules. She was diagnosed with appendicitis and successfully treated with antibiotics. Contrast-enhanced CT performed 2 months after discharge revealed a reduction in small nodules, and tumor markers were not elevated. Therefore, we concluded that this case was unlikely to be an appendiceal tumor. Interval appendectomy was performed laparoscopically, and histopathological analysis revealed a low-grade appendiceal mucinous neoplasm(LAMN). Herein, we present this case and review the relevant literature.