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Related Experiment Videos

[Linear pigmentation of nails]

F Koralewski, F Vakilzadeh, E Macher

    Der Hautarzt; Zeitschrift Fur Dermatologie, Venerologie, Und Verwandte Gebiete
    |April 1, 1977
    PubMed
    Summary
    This summary is machine-generated.

    A case report describes linear pigmentation in three fingernails. Histologic examination of the thumb matrix revealed a junction nevus, a type of mole.

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    Area of Science:

    • Dermatology
    • Oncology
    • Nail Medicine

    Background:

    • Linear pigmentation of fingernails can have various causes.
    • Melanonychia, or nail pigmentation, requires careful evaluation to rule out malignancy.

    Observation:

    • A patient presented with linear pigmentation affecting three fingernails.
    • Following nail extraction, the thumb matrix showed a distinct 2x4 mm pigmented area.

    Findings:

    • Histologic examination of the pigmented nail matrix confirmed the presence of a junction nevus.
    • Junction nevi are benign melanocytic proliferations originating at the junction of the epidermis and dermis.

    Implications:

    • This case highlights the importance of histologic examination for diagnosing nail matrix lesions.
  • Accurate diagnosis of nail pigmentation is crucial for differentiating benign nevi from subungual melanoma.