During three years 1998-2000, 259 patients with 320 basal cell carcinomas were examined at the derma-tooncological clinic of The Faculty Hospital of Ostrava. Four types of basaliomas were differentiated: nodular, infiltrating, superficial and basosquamous. There were 56.8% of males and 43.2% of females in the group, multiple tumors were more often recorded in males. 68.4% of tumors were situated on the head, 22.5% on the trunk, 9.1% on the limbs. Localization on the head was noted in 80% of infiltrating basaliomas, 81.3% of basosquamous type, 69.1% of nodular type and 63.2% of superficial type. The most comon tumor on the trunk was superficial type (29.6%). The mean age of nodular and superficial basal cell carcinoma diagnosis was the samé in both sexes and it was four years higher than the mean age of the diagnosis of the infiltrating type. Nodular and superficial basal cell carcinomas were more frequently diagnosed between 60-79 years, infiltrating carcinoma was diagnosed between 60-79 years in males, in females mostly between 40-59 years. Basosquamous type was more often recorded in higher age group in females when compared to males.

        Key words: basal cell carcinoma - histological type - age - sex - anatomie distribution