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Subungual epidermoid carcinoma.

G R Mikhail

    Journal of the American Academy of Dermatology
    |August 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    Subungual Bowen's disease and squamous cell carcinoma are often misdiagnosed. Histologic examination is crucial for diagnosing these low-grade malignancies, which can be treated with conservative surgery.

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    Area of Science:

    • Dermatology
    • Oncology

    Background:

    • Subungual Bowen's disease and squamous cell carcinoma are underreported.
    • These conditions present with varied clinical appearances, mimicking other nail and skin disorders.

    Observation:

    • The study reviewed 110 cases of subungual epidermoid carcinomas.
    • A protracted course was noted for these lesions.
    • Differential diagnoses include onychomycosis, chronic paronychia, eczema, verruca vulgaris, pyogenic granuloma, subungual exostosis, and malignant melanoma.

    Findings:

    • Histologic examination is essential for accurate diagnosis.
    • Subungual epidermoid carcinomas are low-grade malignancies with a low metastatic potential (2/110 patients).
    • Conservative surgical ablation is an effective management strategy.

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    Implications:

    • Mohs chemosurgery is the ideal treatment for these tumors.
    • Amputation is generally unnecessary and overly aggressive, particularly for thumb involvement.
    • Early and accurate diagnosis improves patient outcomes and limb preservation.