On the basis of own investigations and a survey of the literature, it is shown that the recurrence rate following various types of treatment used for basal cell carcinoma (BCC) is somewhat higher than generally assumed. Irrespective of the method used, the results obtained after treatment of recurrent BCCs are less favorable. Consequently, it is strongly recommended that patients be closely controlled for a period of years following treatment and that only specially trained doctors carry out the treatment. The possibility of centralizing treatment of BCC of the skin to dermatological units is put forward.