Transgender patients: considerations for routine gynecologic care and cancer screening.

In the last several years, demand for transgender care from gynecologists has increased significantly. Transgender people comprise a diverse group who do not identify with the sex they were assigned at birth. Worldwide, it is estimated that 25 million people identify as transgender. Some undergo hormonal and/or surgical treatment aiming to feminize or masculinize their bodies. Cross-sex hormone treatment for transgender women-individuals assigned as male at birth who identify themselves as women-includes exogenous estrogen and/or progestin administration in combination with anti-androgens, whereas testosterone is used for transgender men-individuals whose natal sex is women but identify themselves as men. Although it is usually rare, hormone-sensitive malignancies may arise, and long-term effects remain unknown. In addition, reconstructive surgeries may include breast augmentation and vaginoplasty (creation of a vagina) for transgender women, and chest masculinization surgery (bilateral mastectomy) and metoidioplasty (lengthening of the clitoris to create a microphallus) or phalloplasty (creation of a phallus) for transgender men. Evidence relating to breast and reproductive tract cancers in the trans population is limited and insufficient to estimate cancer prevalence, and recommendations for screening and preventive care depend on the patients' hormonal and surgical status. Even less information exists regarding the sub-set of individuals with genetic predisposition for these malignancies. In this review, we aimed to summarize current recommendations for gynecologists and gynecologic oncologists regarding cancer screening and personalized cancer-risk assessment in transgender people. © IGCS and ESGO 2020. No commercial re-use. See rights and permissions. Published by BMJ.