Gastrointestinal stromal tumor of the appendix: case report and review of the literature

Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumor of the gastrointestinal tract, but are rare in the appendix with only 14 cases reported. Here we report an additional case in the oldest patient to date and review the histologic, immunohistochemical, molecular and clinical findings.