Overview
Recurrent opportunistic infections occur in immunocompromised individuals, often involving unusual pathogens that typically do not cause disease in immunocompetent hosts 123.Diagnosis
Clinical Presentation: Unusual skin lesions (e.g., chronic scaly plantar lesions), interstitial lung patterns on imaging 12.
Imaging: Chest CT showing heavy interstitial pneumonia patterns suggestive of opportunistic infections 2.
Laboratory Tests: Histology and culture of affected tissues (e.g., skin biopsy, blood cultures) to identify specific pathogens like Scopulariopsis brevicaulis, Phoma spp., Trichosporon beigelii 13.
Biopsy: Essential for definitive diagnosis when clinical suspicion is high 2.Management
Antifungal Therapy: Tailored to the identified pathogen; examples include specific treatments for Trichosporon beigelii (drug classes and doses not specified in abstracts) 3.
Adjunctive Care: Address underlying immunosuppression (e.g., immune reconstitution, targeted therapy for primary condition) 2.
Supportive Measures: Management of symptoms and complications, including respiratory support if necessary 2.Special Populations
Immunocompromised Patients: Higher risk and specific focus on recognizing unusual pathogens like Trichosporon beigelii 3.
Pediatrics: Consideration in immunocompromised children, as evidenced by cases in teenage boys 2.Key Recommendations
Perform imaging (CT scans) in immunocompromised patients with suspected interstitial lung disease to identify patterns suggestive of opportunistic infections (Evidence: Moderate 2).
Utilize tissue biopsy and culture for definitive diagnosis when clinical suspicion of unusual opportunistic infections is high (Evidence: Moderate 123).
Initiate targeted antifungal therapy based on identified pathogen, with adjunctive management of underlying immunosuppression (Evidence: Weak 3).References
1 Arrese JE, Piérard-Franchimont C, Piérard GE. Unusual mould infection of the human stratum corneum. Journal of medical and veterinary mycology : bi-monthly publication of the International Society for Human and Animal Mycology 1997. link
2 Hartelius H. Computed tomography in opportunistic lung infections. Acta radiologica (Stockholm, Sweden : 1987) 1988. link
3 Libertin CR, Davies NJ, Halper J, Edson RS, Roberts GD. Invasive disease caused by Trichosporon beigelii. Mayo Clinic proceedings 1983. link