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[CLINICAL CASE OF DIROFILARIASIS.]

L V Fedyanina, M S Maksimova, D V Tikhonova

    Meditsinskaia Parazitologiia I Parazitarnye Bolezni
    |November 3, 2018
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    Summary
    This summary is machine-generated.

    A rare case of Dirofilaria infection in a man's genitalia is detailed. A pregnant female worm, Dirofilaria spp., was found in the penis, containing microfilariae, though none were detected in blood.

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    Area of Science:

    • Parasitology
    • Human Pathology
    • Medical Entomology

    Background:

    • Dirofilariasis is a zoonotic parasitic disease caused by filarial nematodes of the genus Dirofilaria.
    • Human infections are typically asymptomatic or present as subcutaneous nodules, often in the lungs, skin, or eyes.
    • Genital dirofilariasis in males is exceptionally rare, with few documented cases globally.

    Observation:

    • A patient presented with a migratory subcutaneous mass on the chest, followed by a dense penile mass.
    • Surgical excision of the penile mass revealed a gravid female Dirofilaria spp. nematode.
    • Histological examination confirmed the presence of Dirofilaria sections and numerous microfilariae within the female worm's body cavity.

    Findings:

    • The removed penile tumor contained a pregnant Dirofilaria female, a highly unusual localization.
    • Microfilariae were abundant within the nematode but undetectable in the patient's blood via routine methods and PCR.
    • This suggests a potential localized lifecycle or sequestration of microfilariae within the parasite.

    Implications:

    • This case highlights the potential for unusual clinical presentations and rare localizations of Dirofilaria infections in humans.
    • It underscores the importance of considering parasitic etiologies in unexplained subcutaneous masses, even in atypical locations.
    • Further research may be needed to understand the pathogenesis and diagnostic challenges of genital dirofilariasis and microfilariae sequestration.