[Results of treatment of non-melanoma skin cancer in a dermatologic practice. A prospective study].

The study was carried out to determine the results of treatment of a cohort of patients with histologically verified non-melanoma skin cancer diagnosed and followed prospectively for two years in a private practice of dermatology. Throughout the follow-up period, any new non-melanoma skin cancers among this cohort were recorded. Six hundred and forty-six consecutive patients seen in the Dermatology Clinic, Vesterbro 99, Aalborg, Denmark, from July 1, 1990, to June 30, 1993, had a total of 768 tumours that were histologically verified as basal cell carcinoma, squamous cell carcinoma or Bowen's disease. Six hundred and twenty-eight tumours in 526 patients were treated in our clinic, 91% of these with curettage followed by electrocautery. Hundred and twenty patients with a total of 140 tumours were referred to a local hospital for treatment. Thirty-six of the 508 basal cell carcinomas treated in the clinic recurred during the follow-up period, and one mixed tumour (basal cell and squamous cell carcinoma) recurred. During the follow-up period, 151 new non-melanoma skin cancers were detected. In addition, 10 patients each developed 10 or more new tumours.