title: Liver-cell adenomas associated with use of oral contraceptives.
abstract: During the past six years an increasing number of liver-cell adenomas in women were diagnosed, and we undertook a study of possible etiologic factors, including use of oral contraceptives, in 42 women. There was a significant difference between cases and matched controls in mean months of oral-contraceptive use: 73.4 as compared to 36.2 (P less than 0.001). The women with adenomas took mestranol-containing pills much more commonly than the controls (P less than 0.0001). Hemorrhage into the tumor was often associated with the onset of menstruation in women taking oral contraceptives. Long-term use of oral contraceptives, especially those containing a high total dose of steroids or mestranol as the synthetic estrogen, should be balanced against risks of side effects of the drugs.
mesh_terms: D000328:Adult; D006528:Carcinoma, Hepatocellular / Q000139:chemically induced* / Q000473:pathology; D003276:Contraceptives, Oral / Q000009:adverse effects*; D004997:Ethinyl Estradiol / Q000009:adverse effects; D005260:Female; D006801:Humans; D008099:Liver / Q000473:pathology; D008113:Liver Neoplasms / Q000139:chemically induced* / Q000473:pathology; D008656:Mestranol / Q000009:adverse effects; D008875:Middle Aged; D012306:Risk; D013997:Time Factors
chemical_list: D003276:Contraceptives, Oral; D004997:Ethinyl Estradiol; D008656:Mestranol