Forearm mass Within the dorsal soft tissues of the distal wrist is a fairly well-circumscribed mass measuring 2.6 x 2.8 x 2.5 cm in the greatest transverse, AP, and craniocaudal dimensions. Mass appears increased in T1 signal although demonstrates central areas of low T1 signal. On T2, the mass is predominantly hyperintense. There is no significant surrounding soft tissue edema. The underlying bone marrow and surrounding muscular signal is normal. Gradient echo imaging demonstrates no obvious blooming artifact.
Well-circumscribed mass within the dorsal soft tissues of the wrist demonstrate imaging characteristics suggestive of a peripheral nerve sheath tumor.