title: Epidemiology of basal cell carcinoma of the eyelid in south-western Finland.
abstract: BACKGROUND
  Basal cell carcinoma (BCC) is the most common malignant tumour of the skin in Caucasians. It often appears on the eyelids but there are no population-based studies on the incidence of BCC of the eyelid in Nordic countries.
  
  
  METHODS
  The mean annual incidence rates of BCC of the eyelid in the region of South-Western Finland from 1977 to 1997 were calculated.
  
  
  RESULTS
  The mean annual incidence (per 100,000 population) of BCC of the eyelid showed a statistically significant increase from 0.82 (in 1977-1979) to 2.88 (in 1995-1997). The incidence of BCC of the eyelid was 0.8 in the age group of 30-49 years and rose significantly with age (P < 0.0005) to the maximum of 17.2 in the age group of 80-89 years. There were no statistically significant differences in the incidence rates of BCC of eyelid between males and females or between urban, semi-urban and rural populations.
  
  
  CONCLUSIONS
  In South-Western Finland the incidence of BCC of the eyelids more than tripled during the years from 1977 to 1997. This may be due to the increase of the elderly population, because the incidence showed a significant increase with age.
authors.affiliation: Department of Ophthalmology, University of Turku, 20520 Turku, Finland. matti.saari@tyks.fi
authors.forename: K M
authors.initials: KM
authors.lastname: Saari
authors.forename: V
authors.initials: V
authors.lastname: Paavilainen
authors.forename: J
authors.initials: J
authors.lastname: Tuominen
authors.forename: Y
authors.initials: Y
authors.lastname: Collan
mesh_terms: D000328:Adult; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D002280:Basal Cell Carcinoma / Q000453:epidemiology*; D005142:Eyelid Neoplasms / Q000453:epidemiology*; D005260:Female; D005387:Finland / Q000453:epidemiology; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D012424:Rural Population / Q000706:statistics & numerical data; D017678:Sex Distribution; D014505:Urban Population / Q000706:statistics & numerical data