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Chromomycosis in Zaire.

I S Banks, J R Palmieri, L Lanoie

    International Journal of Dermatology
    |June 1, 1985
    PubMed
    Summary
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    This study examined 17 Zairian chromomycosis cases, finding diagnosis often missed clinically. Microscopic analysis revealed characteristic fungi and inflammatory patterns, aiding diagnosis.

    Area of Science:

    • Medical Mycology
    • Dermatopathology

    Background:

    • Chromomycosis is a chronic fungal infection often affecting the skin.
    • Clinical suspicion for chromomycosis is frequently low, delaying diagnosis.

    Purpose of the Study:

    • To describe the histopathological features of chromomycosis in Zairian patients.
    • To identify diagnostic microscopic findings, including pseudoepitheliomatous hyperplasia (PEH) and transepithelial elimination (TEE).

    Main Methods:

    • Histopathological examination of biopsy specimens from 17 Zairian patients with chromomycosis.
    • Analysis of lesion location, duration, and microscopic fungal presence within tissues.

    Main Results:

    • Lesions were predominantly on lower limbs (14/17) and chronic (up to 9 years).

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  • Characteristic thick-walled brown fungi were identified in dermal abscesses, histiocytes, and giant cells.
  • Pseudoepitheliomatous hyperplasia (PEH) and transepithelial elimination (TEE) of fungi were consistently observed, often associated with each other.

    • Conclusions:

    • Histopathology is crucial for diagnosing chromomycosis, especially when clinical suspicion is low.
    • The presence of PEH and TEE are significant microscopic indicators.
    • Surface scrapings in patients with TEE can provide rapid diagnostic confirmation.