The authors report five new cases associating basal cell epithelioma and multiple Pinkus fibro-epithelial tumors on the spine after radiation damage to the skin. One of them had previously published three similar observations: so his experience refers to eight cases. The authors recall similar cases of the literature, they discuss the relations between basal cell epitheliomas and Pinkus premalignant fibro-epithelial tumors of the skin. Histologically they saw several aspects of transition between the two types of tumors. They study the patterns of cancers found after radiation therapy, influence of type of radiations, dose, age, and intervals since X-rays. As regards such cases, the necessity of systematically searching for previous radiations by X-rays in the affected zone is emphasized.