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Articular aspergillosis: case report
1Orthopedics Department, Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Spain.
Abstract:
We present an unusual case of osteomyelitis of the tibia and septic arthritis of the knee caused by Aspergillus fumigatus in a renal transplant recipient. Although the characteristic joint involvement was present, the synovial fluid was initially sterile and contained numerous pyrophosphate crystals.
Insights
A rare Aspergillus fumigatus infection caused tibia osteomyelitis and knee septic arthritis in a renal transplant patient. Initial synovial fluid analysis showed pyrophosphate crystals, not bacteria.
Area of Science:
- Medical Mycology
- Infectious Diseases
- Transplantation Immunology
Background:
- Renal transplant recipients are immunocompromised, increasing susceptibility to opportunistic infections.
- Aspergillus fumigatus is an opportunistic mold that can cause invasive disease in immunocompromised individuals.
- Septic arthritis and osteomyelitis are serious joint and bone infections, respectively.
Observation:
- A renal transplant recipient presented with tibia osteomyelitis and knee septic arthritis.
- The joint fluid, while indicative of infection, was initially sterile.
- Pyrophosphate crystals were notably abundant in the synovial fluid.
Findings:
- The causative agent was identified as Aspergillus fumigatus, an unusual pathogen for this presentation.
- The sterile initial synovial fluid contrasted with the clinical signs of septic arthritis.
- The presence of pyrophosphate crystals may have complicated the initial diagnosis.
Implications:
- Highlights the importance of considering fungal pathogens, particularly Aspergillus, in immunocompromised patients with joint infections.
- Underscores the need for advanced diagnostic techniques when initial cultures are negative.
- Suggests that pyrophosphate crystal arthropathy might coexist with or mimic infectious arthritis in specific patient populations.