Wrist mass and pain. Rule out dorsal wrist mass, cartilage lesion versus bony. A marker was placed along the wrist dorsal to the bases of the second and third metacarpals. Just lateral and deep to this marker is a 6 mm focus of low signal intensity adherent to the dorsal aspect of the base of the second metacarpal and the dorsal aspect of the trapezoid, spanning the second carpometacarpal joint. I cannot tell if this represents a prominent bridging osteophyte or thickened fibrotic capsule, but I suspect this represents the palpable mass. I see no other findings to suggest to indicate a mass. There may be mild tendinosis of the extensor carpi ulnaris as it courses adjacent to the ulnar styloid, but the tendons of the wrist are otherwise unremarkable. A small amount of increased signal intensity within the distal radioulnar joint may represent fluid and/or synovitis. There is also fluid signal intensity concentrated within the pisotriquetral recesses. Cysts and edema within the proximal and medial aspect of the lunate may reflect ulnolunate impaction. Additional rounded foci of signal abnormality within multiple carpal bones may represent cysts or chronic erosions. Mild deformity of the ulnar styloid may reflect old trauma. The scapholunate ligament appears intact. Mild increased signal intensity centrally within the lunotriquetral ligament suggests mild degeneration. There is also increased signal intensity within the articular disc of the triangular fibrocartilage suggesting degeneration. Tiny foci of fluid signal intensity volar to the scaphoid may represent small synovial cysts or tiny ganglia.
Subcentimeter low signal intensity focus along the dorsal aspect of the second carpometacarpal joint may either represent a bridging osteophyte or focal thickening/fibrosis of the joint capsule. This can be further evaluated with computed tomography, if clinically warranted. Other findings as above.