Nine cases of genodermatosis are described, in which the clinical symptoms and light-microscope findings resembled those in epidermodysplasia verruciformis (Lewandowsky-Lutz disease). All had alterations of the fingernails and toenails. Viruses were not found in a excised skin lesions or in the fingernail clipping from the patients. The mode of inheritance of the dermatosis seems to be X-chromosomal and dominant. It is the opinion of the authors that this dermatosis is separate entity from epidermodysplasia verruciformis.
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