Background: Bone infections such as chronic fungal erosive osteomyelitis are rare. uncommon forms of bone infection. The widespread yeast of the Cryptococcus species, the endemic dimorphic fungus Coccidioides, and the simultaneous infection by multiple pathogen species are even less common, especially in immunocompetent hosts. These infections frequently have no symptoms and the clinical signs remain undetected, allowing the infection to worsen over weeks or months. Mycotic arthritis is one of the rarest clinical symptoms; it is hard to distinguish from other types of arthritis, which slows down the diagnosis procedure.
Case presentation: In order to demonstrate the beginning and progression of radiological abnormalities in a case of aggressive fungal osteomyelitis, we provide the case of a 31-year-old male patient here. The man showed signs of extensive bone erosion and inflammatory involvement in his right knee and right hallux phalanx, although he had no prior history of immunodeficiency. The co-infection resulting from Cryptococcus Neoformans in his right knee and Coccidioides Immitis in his hallux were the reason for the injuries.
Conclusions: While an acute, benign, and self eradicating lung infection is the predominant presentation for most cases of cryptococcosis and coccidioidomycosis, a small percentage of patients experience a devastating extrapulmonary condition, which can include arthritis. The pathogenic mechanism of bone involvement are unknown, and it often remains untreated. Here, we discuss radiographic evidence of particular bone inflammation during the early phase and later phases of the disease, since management of this chronic condition remains a challenge. We propose that imaging may mimic osseous neoplasia in persistent fungal diseases, such as Coccidioidomycosis and Cryptococcosis.
