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[Pseudomycetomatous subcutaneous phaeohyphomycosis].

A Warter1, J Audouin, M Develoux

  • 1Laboratoire d'Anatomie Pathologique, Faculté des Sciences de la Santé, Université de Niamey.

Bulletin De La Societe De Pathologie Exotique Et De Ses Filiales
|January 1, 1988
PubMed
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This report details the first Nigerian case of cutaneous and subcutaneous phaeohyphomycosis, a fungal infection presenting with unusual pseudo-tumoral lesions resembling mycetoma. Histology confirmed the diagnosis by revealing characteristic pigmented mycelia.

Area of Science:

  • Medical Mycology
  • Infectious Diseases
  • Dermatology

Background:

  • Phaeohyphomycosis is a fungal infection caused by dematiaceous (darkly pigmented) fungi.
  • It can manifest in various forms, affecting the skin, subcutaneous tissues, or even internal organs.
  • Opportunistic infections like phaeohyphomycosis often occur in immunocompromised individuals.

Observation:

  • The study presents the first reported case of cutaneous and subcutaneous phaeohyphomycosis in Nigeria.
  • The patient exhibited a unique macroscopy: a pseudo-tumoral lesion with fistulae, mimicking mycetoma.
  • Diagnosis was established through histological examination, identifying characteristic pigmented mycelia.

Findings:

  • Histopathology is crucial for diagnosing phaeohyphomycosis, especially when cultures are not feasible.

Related Experiment Videos

  • The presence of pigmented mycelia in tissue is a hallmark of this fungal infection.
  • Unusual clinical presentations can pose diagnostic challenges.

    • Implications:

    • Recognizing atypical clinical forms of phaeohyphomycosis is vital for timely diagnosis.
    • Culturing exudate from such lesions, when possible, provides definitive mycological identification.
    • This case highlights the importance of considering phaeohyphomycosis in differential diagnoses, particularly in endemic regions or in immunocompromised patients.