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Actinomycetoma caused by Rhodococcus spp.

L C Severo, V F Petrillo, L M Coutinho

    Mycopathologia
    |June 1, 1987
    PubMed
    Summary
    This summary is machine-generated.

    This study details a rare case of mycetoma in a 62-year-old man, caused by Rhodococcus bacteria. Diagnosis involved analyzing foot sinus discharge and identifying the specific bacterial granules.

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    Area of Science:

    • Medical Mycology
    • Infectious Diseases
    • Microbiology

    Background:

    • Mycetoma is a chronic, granulomatous infectious disease affecting subcutaneous tissue, typically of the foot.
    • It is often caused by fungi or aerobic actinomycetes, leading to characteristic granules in sinus exudates.
    • Rhodococcus species are aerobic, Gram-positive bacteria, usually found in soil and water, rarely implicated in mycetoma.

    Observation:

    • A 62-year-old male presented with multiple draining sinuses on his left foot, a hallmark of mycetoma.
    • Biopsy revealed a granulomatous reaction and microabscesses containing granules.
    • Microscopic examination of the granules showed rod and coccoid, Gram-positive, partially acid-fast elements.

    Findings:

    • Culture of the biopsy specimen yielded a 'Nocardia-like organism'.

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  • Further confirmation by the Center for Disease Control identified the causative agent as Rhodococcus spp.
  • This case highlights Rhodococcus as a potential, albeit rare, cause of mycetoma.

    • Implications:

    • This case expands the known spectrum of etiological agents responsible for mycetoma.
    • Accurate identification of Rhodococcus is crucial for appropriate treatment and management of mycetoma cases.
    • Further research may be warranted to understand the prevalence and pathogenesis of Rhodococcus-induced mycetoma.