[Internal malignancies and skin lesions].

Skin lesions are commonly classified according to their origin as follows; skin lesions induced by internal malignancies, skin lesions as part of a syndrome, nonspecific lesions and complications of internal malignancies, but with an unknown relationship, so-called Bowen's disease, and Paget's disease. These skin lesions consist of various kinds and are multiple. Commonly, the disease which is detected seems to be an immunological reaction to internal malignancy; malignant acanthosis nigricans and dermatomyositis are examples of this. In the early stage of internal malignancies, it is important to detect the relations hip between the malignancy and accompanying skin lesions.