Cecile Unger, a specialist in female pelvic medicine at Cleveland Clinic, says several of the roughly 40 male-to-female transgender patients she saw in the past year have asked her about uterine transplants. One patient, she says, asked if she should wait to have her sex reassignment surgery until she could have a uterine transplant at the same time. (Unger’s advice was no.) Marci Bowers, a gynecological surgeon in northern California at Mills–Peninsula Medical Center, says that a handful of her male-to-female patients—“fewer than 5 percent”— ask about transplants. Boston Medical Center endocrinologist Joshua Safer says he, too, has fielded such requests among a small number of his transgender patients. With each patient, the subsequent conversations were an exercise in tamping down expectations.