[Multiple keratoacanthomas].

Report of a 59 year old man who suffered from spontaneously healing multiple keratoakanthomas of the face and neck for five years. Multiple keratoakanthomas, multiple primary squamous-cell carcinomas with spontaneous healing and tumor-like keratoses probably are variants of the same disease. The etiology of multiple keratoakanthomas is unknown. Clinically as well as histologically they are similar to solitary keratoakanthomas and show spontaneous healing. Thorough clinical control of the patients is necessary because of the possible transformation into squamous cell carcinomas.