title: Breast cancer followed by second malignancy.
mesh_terms: D000328:Adult; D001943:Breast Neoplasms / Q000453:epidemiology* / Q000532:radiotherapy; D005260:Female; D006801:Humans; D007564:Japan; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000453:epidemiology*; D009381:Neoplasms, Radiation-Induced / Q000453:epidemiology