A Case of Appendicular Schwannoma

Abstract

A 60-year-old woman was admitted to our hospital with the chief complaint of generalized malaise. Laparoscopic surgery was performed under the suspicion of a tumor in the right ovary, however, a tumor was found in the distal appendix. We performed ileocecal resection for the appendicular tumor suspecting that it was malignant. The postoperative course was uneventful, and the patient was discharged on postoperative day 12. Immunohistochemically, the tumor cells were positive for S-100 protein, but negative for c-kit, CD34 and α-SMA, and based on the findings, the tumor was diagnosed as a schwannoma of the appendix. Appendicular schwannoma is a rare disease of the appendix. A review of the Japanese literature using the Igaku Chuo Zasshi search engine revealed 5 case reports, including the present case. The results of the review are presented.