ENDOSCOPIC RESECTION OF A COMPLETELY INVERTED APPENDIX DUE TO ENDOMETRIOSIS: A CASE REPORT

Abstract

A 41-year-old woman underwent preoperative contrast-enhanced CT for gallbladder stones. The CT scan suggested the presence of a protruding lesion in the cecum. CS revealed a 30mm pedunculated polyp with a wide stalk at the appendiceal orifice. Although biopsy findings suggested the presence of an inflammatory fibroid polyp, we could not deny that the lesion had neoplastic characteristics. Therefore, we decided to resect the lesion endoscopically for diagnostic purposes. Following two ligations near the base of the wide stalk using endoloops (Olympus, Tokyo, Japan), the polyp was removed using a snare. The patient had a postoperative fever (temperature of approximately 37°C); however, she recovered and was discharged 3 days after treatment. The final pathological diagnosis was a completely inverted appendix due to appendiceal endometriosis. One year later, endoscopic reexamination revealed no abnormality at the appendiceal orifice. We report an extremely rare case of a completely inverted appendix due to appendiceal endometriosis treated by endoscopic resection.