74-year-old male reported as "LEFT dorsal wrist soft tissue sarcoma now with recurrent mass" although the electronic medical record/pathology states the patient had a right soft tissue mass status post resection, now with recurrent mass. An avidly enhancing, predominantly high T2, intermediate T1 signal mass is noted along the dorsal aspect of the RIGHT wrist, within the subcutaneous tissue.Mass measures 16 x 11 x 20 mm (series 1201, image 13; series 1401, image 12) and extends along although does not appear to invade through the extensor tendon sheath. Small feeding and draining vessels are seen. The extensor and flexor tendons are normal in signal without evidence of invasion.Degenerative changes affect the radiocarpal joint, midcarpal joints, and particularly the basilar joint with multiple subchondral cysts. Abnormal edema type marrow signal within the ulnar aspect of the triquetrum. Degenerative tearing of the triangular fibrocartilage complex with a 6 x 6 mm ganglion cyst at the tip of the ulnar styloid. Small amount of enhancing synovium and fluid within the distal radioulnar joint and midcarpal joints. Scapholunate widening is present suggesting tearing of the scapholunate ligament.
1.Avidly enhancing subcutaneous mass along the dorsal aspect of the right wrist as described above. Provided the patient's history, may represent an additional soft tissue sarcoma.2.Degenerative disease affects the wrist with ganglion cyst formation along the ulnar styloid as described above.3.Mild synovitis and joint fluid of the distal radioulnar joint and midcarpal joints. 