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Related Experiment Videos

Granular cell basal cell carcinoma. A distinct histopathologic entity.

R J Barr, J H Graham

    Archives of Dermatology
    |September 1, 1979
    PubMed
    Summary

    This study examines basal cell carcinoma with granular cell features. Ultrastructural analysis reveals lysosome-like organelles and tonofilaments, supporting an epithelial origin for these rare granular cells.

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    Area of Science:

    • Dermatopathology
    • Oncology
    • Cell Biology

    Background:

    • Basal cell carcinoma (BCC) is the most common human cancer.
    • Granular cell features in BCC are rare and can mimic other tumors.
    • Distinguishing these variants is crucial for accurate diagnosis and treatment.

    Observation:

    • Two cases of BCC exhibited nodular patterns with focal areas of granular cells.
    • Cells displayed eosinophilic, granular cytoplasm and inclusions, resembling granular cell myoblastoma.
    • Ultrastructural examination revealed lysosome-like organelles and tonofilaments.

    Findings:

    • The granular cells in BCC showed ultrastructural similarities to both granular cell myoblastoma and the granular cell variant of ameloblastoma.
    • The presence of tonofilaments and desmosomes strongly supports an epithelial origin for the granular cells.
    • This suggests a rare variant of basal cell carcinoma rather than a collision tumor or metastasis.

    Implications:

    • Clarifies the nature of granular cells in this BCC variant, aiding differential diagnosis.
    • Highlights the importance of ultrastructural analysis in diagnosing rare skin tumors.
    • Contributes to understanding the diverse histopathologic presentations of basal cell carcinoma.

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