Rare case of ulnar cryptococcal osteomyelitis in a 26-year-old immunocompetent patient

Cryptococcus is a ubiquitous fungus that can cause serious infections, especially in immunocompromised patients. It usually affects the brain and lungs but can occasionally affect the bones. The vertebrae, skull, and femur are most commonly involved. Cryptococcal osteomyelitis of the ulna is very rare, with less than 5 previously published cases in literature. The imaging findings of cryptococcal osteomyelitis are unfortunately often indistinguishable from those of malignancy. In this report, we describe a case of cryptococcal osteomyelitis of the ulna in an immunocompetent patient.