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Cellular changes in the basaloid cell papilloma.

B Lagerholm, A Frithz, C J Sant Orp

    Acta Dermato-Venereologica
    |January 1, 1975
    PubMed
    Summary
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    Electron microscopy revealed altered metabolic activity in basaloid cell papillomas. Ultrastructural findings suggest keratohyalin

    Area of Science:

    • Dermatopathology
    • Cell Biology
    • Electron Microscopy

    Background:

    • Basaloid cell papillomas are skin neoplasms with distinct solid and papillomatous types.
    • Understanding their ultrastructure is crucial for differentiating benign lesions from malignant ones.

    Purpose of the Study:

    • To describe the submicroscopic organization of solid and papillomatous basaloid cell papillomas.
    • To investigate the ultrastructural basis of altered metabolic activity and keratinization patterns.

    Main Methods:

    • Electron microscopic analysis of basaloid cell papilloma tissue samples.
    • Detailed examination of cellular organelles and structures, including mitochondria, endoplasmic reticulum, and microtubules.

    Main Results:

    Related Experiment Videos

    • Identified significant ultrastructural alterations indicative of altered metabolic activity: increased/polymorphic mitochondria, intracytoplasmic vesicles, endoplasmic reticulum hypertrophy, and unusual microtubule-like structures.
    • Observed a correlation between the presence/absence of keratohyalin and the formation of A- and B-cells.
    • Compared these findings to parakeratosis in psoriatic lesions and suggested orthokeratosis formation without preceding keratohyalin.

    Conclusions:

    • The study elucidates the ultrastructural characteristics of basaloid cell papillomas, highlighting altered cellular metabolism.
    • Findings provide insights into the submicroscopic mechanisms of keratinization and cell differentiation in these tumors.
    • Electron microscopy is valuable for understanding the complex cellular processes in skin neoplasms.