Population-based study of cutaneous malignant melanoma in the Granada province (Spain), 1985-1992

Cutaneous melanoma has received substantial attention during the last years because of the increase in its incidence which has been registered in many countries. This paper aims at describing the incidence and characteristics of all new cutaneous malignant melanoma cases during 1985-1992 reported to the Granada Cancer Registry (Spain) in the context of Mediterranean popula tions. A population-based study with 247 cutaneous melanoma cases was carri ed out. The variables used were: sex, age, anatomic site, hystological type , level of invasion and tumour thickness. The Age-Standardised incidence Ra te per World population (ASRW) was 2.9 for males and 3.7 for females in the whole period. An increasing incidence trend for both males and females was found. The ASRW in 1985-1987, 1988-1990 and 1991-1992 was respectively 2.2 , 2.9 and 3.2 for males and 3, 3.4, 4.7 for females. The most frequent loca tion was trunk for males (36%) and lower extremities for females (44%). The most frequent hystological type for both males and females was superficial spreading melanoma. Seventy-six percent of males and 60% of females were d iagnosed Clark's level III or over. Average tumour thickness was 3.3 mm for males and 2.4 mm for females. The results of this study can be a guidance for the setting up of health policies which would contribute to the prevent ion of the disease and to an improvement in care. Because of the increase i n incidence rates and the high percentage of cases which were diagnosed at advanced stages, it is advised that prevention campaigns are addressed to t he Granada population.