Abstract
A 73-year-old male underwent FDG-PET to investigate his chief complaint of discomfort in the left lower abdominal quadrant. Enhanced uptake of FDG was evident in the descending colon. After colonoscopy was performed, a diagnosis of a submucosal tumor was made. Since the possibility of malignant disease could not be refuted, partial laparoscopic resection of the colon was performed based on results of diagnostic imaging. Histopathologic examination showed that the tumor consisted of increased spindle-shaped cells in disarray. Immunohistochemically, the cells exhibited positivity for S-100 protein, α-SMA and c-kit in the absence of CD34. The tumor was diagnosed as a primary descending colon schwannoma, and there were no malignant findings. Herein, we report our experience of a case of descending colon schwannoma in which FDG-PET showed enhanced uptake.
