Abstract
FDG positron emission tomography has been used to quantify tumor metabolism. However, little is known about FDG uptake in benign tumors. We report a case of intrathoracic schwannoma showing a high uptake of FDG on PET. A 50-year-old female was referred to our hospital because of an abnormal shadow on a chest radiograph. Chest computed tomography scan revealed a posterior mediastinal tumor. The tumor showed high uptake on FDG positron emission tomography, and was resected under video-assisted thoracic surgery. The histological diagnosis of the frozen section was schwannoma. Because intrathoracic schwannoma sometimes shows a high level of FDG uptake, the tumor cannot be excluded when considering the differential diagnosis.
