Characteristic MRI findings of tuberculous infection of the wrist include synovial thickening around the flexor and extensor tendons and synovial fluid collection that contains small low-signal and nonenhanced foci in the tendon sheath. Bone erosion, osteomyelitis, and median nerve encasement are also frequently present. These characteristic manifestations are helpful in diagnosing this disease entity.

Infection with Cryptococcus neoformans often occurs in immunocompromised hosts. It is usually acquired by invasion of the respiratory tract, and then the organisms may spread hematogenously to other viscera, mainly the central nervous system. Although there are some reports of primary cutaneous cryptococcosis, cryptococcal skin disease is a rare feature of disseminated cryptococcosis, and has a poor outcome if unrecognized and untreated. We present a case of cryptococcal cellulitis in a patient with rheumatoid arthritis who was receiving long-term steroid treatment. Reviewing the literature, this is the first report of rheumatoid arthritis with disseminated cryptococcosis initially presenting as cellulitis.

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