Appendiceal Gastrointestinal Stromal Tumor: A Case Report and Review of the Relevant Literature

Gastrointestinal stromal tumor (GIST) is the most common type of mesenchymal tumor found in the gastrointestinal tract, but appendiceal GIST is very rare. It is often discovered when patients present symptoms that resemble those of acute appendicitis. We herein report the case of an 81-year-old man who presented with abdominal pain. He underwent a laparoscopic appendicectomy with histopathological examination confirming a completely resected GIST of the appendix. GIST of the appendix is rare, with only a few reported cases. We currently present a case of appendiceal GIST that was diagnosed postoperatively. Preoperative diagnosis of appendiceal GIST is difficult because of its small size. Therefore, surgeons must be cautious when considering the possibility of an appendiceal GIST and ensure adequate surgical margins.