A case of schwannoma of the upper extremity with high fluorodeoxyglucose uptake identified during follow-up after ascending colon cancer surgery

Abstract

The patient, an 87-year-old woman, complained of abdominal pain ; an obstructive ileus due to ascending colon cancer was diagnosed, and a right hemicolectomy was done. One year later, a metastatic lesion was found in the left lower lung on computed tomography. FDG-PET study showed a high FDG uptake tumor in the right upper extremity ; on pathology of the excisional biopsy, a schwannoma was diagnosed. Currently FDG-PET is often performed to identify colon cancer recurrence. Schwannoma is an important lesion to remember in the differential diagnosis of metastatic cancer.