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Cutaneous malignant melanoma in South Sweden 1965, 1975, and 1985. A histopathologic review

Background. There is an increase in the incidence of cutaneous malignant melanoma (CMM) among white people throughout the world. In Sweden, a fivefold increase has been recorded since 1960, but the mortality is rising at a much lower rate. Tumor thickness is the single most important prognostic factor for primary melanoma. This study aimed to clarify whether the thickness of the tumor in invasive CMM decreased during the period 1965–1985.