Right thumb mass There is an ovoid focus of low T1/low T2 signal intensity measuring 1 cm in the longitudinal dimension within the subcutaneous fat of the thumb medial to the proximal diaphysis of the proximal phalanx. This is surrounded by additional intermediate signal intensity measuring approximately 1 cm in the transverse dimension which extends from the skin to the underlying bone and adjacent pulley. There is minimal if any enhancement of this mass and surrounding area following gadolinium administration. There is no deformity or invasion of the underlying bone. The remaining soft tissues of the thumb appear normal.
Low signal intensity subcutaneous mass within the thumb with minimal if any enhancement. The signal characteristics suggest the possibility of a fibrous lesion or scarring.