Gastrointestinal Stromal Tumor of the Appendix—A Case Report—

Abstract

A 71-year-old man was admitted to our emergency department with fever and acute right lower abdominal pain. Computed tomography showed an enlarged appendix and enlarged lymph nodes around the ileocecal artery. Laparoscopic appendectomy was performed on day 1 for acute appendicitis and a suspected appendiceal tumor. The appendix was resected along with part of the cecum wall due to enlargement at the base of the appendix. The excised specimen showed a 13-mm mass, 3 cm distal to the appendiceal orifice. Histological examination showed proliferation of spindle-shaped cells, and immunostaining showed KIT(+), CD34(+), and desmin(-). Based on the above, a diagnosis of appendiceal gastrointestinal stroma tumor (GIST) was made. The patient was discharged from the hospital without complications 7 days after surgery. Appendiceal GIST is a very rare condition with limited reports. A case of appendiceal GIST was presented along with a review of the literature.