[Determining groups at risk of cancer in skin diseases].

The frequency of subsequent tumor development in patients suffering from acquired ichthyosis and Darier's erythema as well as cases of concurrent dermatosis and malignant diseases was studied. The clinical course of said skin diseases was followed versus the effectiveness of tumor treatment. Acquired ichthyosis was found to be associated predominantly with neoplasms while the incidence of Darier's erythema was not.