title: Breast cancer manifest during contraceptive steroid therapy of two women with prior lactation mastitis.
mesh_terms: D001940:Breast; D001943:Breast Neoplasms; D003267:Contraception; D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined; D003278:Contraceptives, Oral, Hormonal; D004116:Dimethisterone; D004194:Disease; D004997:Ethinyl Estradiol; D005193:Family Planning Services; D007774:Lactation; D009369:Neoplasms; D009640:Norethindrone; D011644:Puerperal Disorders; D012106:Research
chemical_list: D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined; D003278:Contraceptives, Oral, Hormonal; D004997:Ethinyl Estradiol; D004116:Dimethisterone; D009640:Norethindrone
keywords: Breast Cancer; Cancer; Case Studies; Contraception; Contraceptive Agents; Contraceptive Agents, Estrogen; Contraceptive Agents, Female; Contraceptive Agents, Progestin; Dimethisterone; Diseases; Ethinyl Estradiol; Family Planning; Lactation; Mammary Gland Effects; Neoplasms; Norethindrone; Norethindrone Acetate; Oral Contraceptives; Oral Contraceptives, Combined; Puerperal Disorders; Research Methodology; Studies