Myoepithelial carcinoma of tibia mimic giant cell tumor: a case report with emphasis on MR features

We report the radiographic images and complete magnetic resonance (MR) features of a 44-year-old male with right knee pain of 7  months’ duration. The radiographic findings and convention MR images indicated a giant cell tumor of the bone. The dynamic contrast-enhanced images showed a patent with the early wash-in and early wash-out usually noted in a giant cell tumor of the bone. Only water restriction on diffusion-weigh ted imaging (DWI) showed the malignant impression. Care should be taken when conventional images indicate giant cell tumor of the bone, as intraosseous myoepithelial carcinoma, although rare, can mimic this more common diagnosis. Further studies with DWI are warranted.
Source: Skeletal Radiology - Category: Radiology Source Type: research