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In a registry-based case-control study, we compared the site-specific occurrence of nonmelanoma (keratinocytic) skin cancers among patients with cutaneous melanoma cases (cases, n = 3774) and solid tumours (controls, n = 349,923), respectively. Overall, patients with melanoma were almost five-fold more likely to develop keratinocytic cancers compared with solid tumour controls (adjusted OR 4.7, 95% CI 4.1-5.3), but the risks varied depending upon the site of melanoma. Whereas patients with melanoma of the head and neck had similarly increased risks of keratinocytic cancers across all body sites, patients with melanoma of the trunk were significantly more likely to develop keratinocyte cancer diagnosed on the trunk (adjusted OR 12.5, 95% CI 7.2-20.2) than on the head and neck (adjusted OR 3.0, 95% CI 2.2-4.3). Similar colocalisation of skin tumours was observed for patients with melanomas of the lower limb. These findings provide support for the hypothesis that skin cancers at different anatomical sites may arise through different causal pathways.

Original publication

DOI

10.1038/sj.bjc.6602745

Type

Journal article

Journal

Br J Cancer

Publication Date

05/09/2005

Volume

93

Pages

597 - 601

Keywords

Adolescent, Adult, Age Distribution, Aged, Aged, 80 and over, Carcinoma, Basal Cell, Carcinoma, Squamous Cell, Case-Control Studies, Child, Female, Great Britain, Humans, Incidence, Male, Melanoma, Middle Aged, Prognosis, Registries, Sex Distribution, Skin Neoplasms