[Pre- and early natal exposure to geomagnetic field as risk for melanoma and basal cell skin tumors].

Histories of 173 male and female patients with melanoma and basal cell skin tumors (BCST) were followed to elucidate the influence of pre- and early natal exposure to geomagnetic field (GMF) on future incidence of cancer. A positive correlation was established between exposure to GMF during critical months of prenatal period, on the one hand, and melanoma detection, on the other. However, a similar correlation involving BCST was inverse which suggests a difference in the etiologies. Tumor regression coefficients which link total Ki-indices for critical months of pre- and early natal exposure with tumor detection time are presented.