Abstract
A gastrointestinal stromal tumor (GIST) of the stomach mimicking an adrenal incidentaloma in a 67-year-old man is reported. He was referred to our hospital for treatment of a left adrenal tumor incidentally detected by screening computed tomography. Magnetic resonance imaging (MRI) revealed a tumor, approximately 5 cm in diameter, at the upper pole of the left kidney. Laboratory findings, including adrenal hormone levels, were unremarkable. With a preoperative diagnosis of adrenal nonfunctional incidentaloma, we performed laparoscopic adrenalectomy. Intraoperative findings, showed that the pediculated tumor arising from the stomach was growing outside of the gastric wall into the blind pocket. Histopathologically, the tumor consisted of spindle sells. Immunohistochemically, the tumor was positive for c-kit and CD 34. Based on these findings, the tumor was diagnosed as GIST.
