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Subcutaneous alternariosis.

A J Mitchell, A R Solomon, E S Beneke

    Journal of the American Academy of Dermatology
    |May 1, 1983
    PubMed
    Summary
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    This study reports the first human infection with Alternaria dianthicola, presenting as noninflammatory subcutaneous nodules. Surgical removal was an effective treatment for this rare fungal infection.

    Area of Science:

    • Mycology
    • Infectious Diseases
    • Dermatology

    Background:

    • Alternaria species are known plant pathogens, occasionally causing human infections, typically cutaneous alternariosis.
    • Previous cases of cutaneous alternariosis involved chronic ulcerative eruptions on exposed skin.
    • Histopathology usually shows dermal granulomatous infiltration and epidermal changes with fungal hyphae.

    Observation:

    • This case details the first reported human infection with Alternaria dianthicola.
    • The patient presented with unique, clinically noninflammatory subcutaneous nodules on the chest wall.
    • The subcutaneous granulomatous process was potentially linked to deep traumatic inoculation.

    Findings:

    • Histopathological examination revealed granulomatous inflammation in the subcutaneous tissue.

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  • Fungal hyphae consistent with Alternaria were identified within the nodules.
  • The circumscribed nature of the subcutaneous nodules facilitated a surgical approach.

    • Implications:

    • This case expands the spectrum of human infections caused by Alternaria species.
    • It highlights the possibility of deep-seated fungal infections from traumatic inoculation.
    • Surgical excision can be a viable therapeutic option for localized subcutaneous alternariosis.