Breast cancer risk in transgender people receiving hormone treatment: nationwide cohort study in the Netherlands.
Christel J M de BlokChantal M WiepjesNienke M NotaKlaartje van EngelenMuriel A AdankKoen M A DreijerinkEllis BarbéInge R H M KoningsMartin den HeijerPublished in: BMJ (Clinical research ed.) (2019)
This study showed an increased risk of breast cancer in trans women compared with cisgender men, and a lower risk in trans men compared with cisgender women. In trans women, the risk of breast cancer increased during a relatively short duration of hormone treatment and the characteristics of the breast cancer resembled a more female pattern. These results suggest that breast cancer screening guidelines for cisgender people are sufficient for transgender people using hormone treatment.