Incidence and Trends of Basal Cell Carcinoma and Cutaneous Squamous Cell Carcinoma: A Population-Based Study in Olmsted County, Minnesota, 2000 to 2010

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To determine population-based incidence estimates of basal cell carcinoma (BCC) and cutaneous squamous cell carcinoma (cSCC).

Patients and Methods:

We reviewed the medical records of a population-based cohort diagnosed with nonmelanoma skin cancer between January 2, 2000, and December 31, 2010. The age- and sex-adjusted incidence rates were calculated and compared with estimates from previous periods.


The age-adjusted BCC incidence (cases per 100,000 person-years) was 360.0 (95% CI, 342.5-377.4) in men and 292.9 (95% CI, 278.6-307.1) in women. The age-adjusted cSCC incidence (cases per 100,000 person-years) was 207.5 (95% CI, 193.9-221.1) in men and 128.8 (95% CI, 119.4-138.2) in women. From years 1976 to 1984 to years 2000 to 2010, the age- and sex-adjusted incidence (cases per 100,000 person-years) of BCC increased from 222.0 (95% CI, 204.5-239.5) to 321.2 (95% CI, 310.3-332.2) and that of cSCC from 61.8 (95% CI, 52.3-71.4) to 162.5 (95% CI, 154.6-170.3). Over time, the anatomical distribution of BCC shifted from the head and neck to the torso and that of cSCC shifted from the head and neck to the extremities.


The incidences of BCC and cSCC are increasing, with a disproportionate increase in cSCC relative to BCC. There is also a disproportionate increase in the incidence of both tumors in women, as well as a shift of anatomical distributions.

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