Increased risk of non-cutaneous malignancy after diagnosis of non-melanoma skin cancer may be due to sun avoidance

Letter

 An analysis of second non-cutaneous malignancy in the Woman's Health Initiative after diagnosis of non-melanoma skin cancer (NMSC) found significantly higher rates for any, breast, colon, and lung cancer, leukemia, melanoma, and non-Hodgkin's lymphoma after adjustment for various risk-modifying factors.¹ Non-significant increases were found for endometrial and ovarian cancer. Participant information was collected at baseline (1993-1998) and three years, with follow up through August 2014. No explanation was given for the associations found.