intraosseous schwannoma

Sternal

intraosseous schwannoma mimicking breast cancer metastasis. The finding of chest CT. (A) Chest computed tomography showed a round, well-defined, low-density nodule measuring 3.3 x 2.8 cm (arrows), which was located at almost the center of the sternum with bone lysis and erosion. The finding of FDG-PET/CT (B) [18 F]Fluorodeoxyglucose positron emission tomography/computed tomography demonstrated fluorodeoxyglucose accumulation (arrowheads) in the tumor. The standardized uptake value was 5.51.p.