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Trichilemmal pilar tumors

J Janitz, H Wiedersberg

    Cancer
    |April 1, 1980
    PubMed
    Summary

    This study details 16 cases of trichilemmal pilar tumors, predominantly affecting older women on the scalp. Understanding these rare tumors is crucial to prevent misdiagnosis as squamous cell carcinoma.

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    Area of Science:

    • Dermatopathology
    • Oncology

    Background:

    • Trichilemmal pilar tumors are uncommon neoplasms.
    • These tumors originate from the outer root sheath of hair follicles.

    Purpose of the Study:

    • To describe the clinical and histopathological features of 16 trichilemmal pilar tumors.
    • To highlight the importance of accurate diagnosis to differentiate from squamous cell carcinoma.

    Main Methods:

    • Retrospective analysis of 16 patient cases.
    • Histopathological examination of tumor samples.

    Main Results:

    • All 16 patients were women of older age.
    • Tumors were primarily located on the scalp.
    • Histopathology revealed squamous epithelium with non-epidermal keratinization and cellular polymorphism; two cases were cystic.

    Conclusions:

    • Trichilemmal pilar tumors are rare, predominantly affecting elderly women.
    • Distinct histopathological features are essential for differentiating these tumors from squamous cell carcinoma.
    • Awareness of these tumors aids in avoiding diagnostic errors.

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