Abstract
The electron microscopic study represent the changes in the skin layers in the malignant tumor, the nodular basal cell epithelioma. Comparisons were made between normal cells found in the normal skin at the periphery of the tumor, the cells located near the tumor and the tumors located in the depth of the carcinoma. The microscopic analysis of the tumor formation revealed the characteristics of the pigmented nodular basal cell epitheliu. To the exterior of the carcinoma were evidenced numerous globular formations limiting the peripheral extension of the tumor, which explains its evolution in years.