MRI
Axial STIR
Sagittal STIR
Sagittal T1 TSE
Axial T2 fat sat
Axial Subtraction
Axial ADC
Axial T1 C+ fat sat
Sagittal T1 C+ fat sat
Well-circumscribed soft tissue nodule identified within the extensor compartment of the distal forearm, between the extensor carpi ulnaris and extensor DTT minimi muscles, close the myotendinous junction. It has characteristics which would be most suggestive of a benign peripheral nerve sheeth tumor (well-circumscribed borders, well-defined thin increased T2 signal intensity rim surrounding the margin of the lesion, central cystic degeneration changes, split fat sign).
No aggressive features are identified to suggest malignant peripheral nerve sheath tumor (such as; irregularity of the lesion margins, surrounding soft tissue edema, surrounding postcontrast enhancement or a mean ADC value less than 1.0 on the diffusion-weighted sequences).