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[Paraneoplastic ichthyosis. Ultrastructural study].

H Perrot, D Schmitt, J Thivolet

Annales De Dermatologie Et De Syphiligraphie

|January 1, 1976

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Electron microscopy revealed normal keratohyaline granules in a patient with ichthyosis and bronchial carcinoma. This suggests reduced synthesis of normal keratohyalin, distinct from other ichthyosis forms.

Area of Science:

Dermatology and Oncology
Cell Biology
Electron Microscopy

Background:

Ichthyosis is a skin disorder characterized by dry, scaling skin.
Bronchial carcinoma is a type of lung cancer.
The association between ichthyosis and bronchial carcinoma is rare and not well understood.

Observation:

Electron microscopy was used to examine skin tissue from a patient with ichthyosis and bronchial carcinoma.
Keratohyaline granules, important for skin barrier function, were analyzed.
These granules were found to be structurally normal but reduced in size and number in a specific skin layer.

Findings:

The study observed normal keratohyaline granules in a single epidermal layer.
A reduction in the size and number of these granules was noted.

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This finding suggests a reduced synthesis of normal keratohyalin.

Implications:

The observed keratohyaline granule changes differ from those seen in autosomal dominant ichthyosis vulgaris.
This distinction may help in classifying ichthyosis subtypes.
Further research is needed to understand the link between bronchial carcinoma and specific keratohyaline granule alterations.