She was 19 years old and had never menstruated. It seemed strange to her, but she did not give it much importance until her partner, after a year of unsuccessful attempts, began to worry about possible infertility.

At the gynecological appointment, everything appeared normal at first glance: tall stature, fully developed breasts, female external genitalia. But the physical examination showed sparse pubic hair and a short vaginal pouch, with no palpable cervix. The ultrasound further concerned the doctors: there was no uterus or ovaries anywhere in the pelvis.

Blood tests revealed testosterone of 650 ng/dL, levels typical of a man, along with elevated LH and FSH. The karyotype confirmed what no one expected: 46,XY. An MRI located oval structures lodged near the inguinal canals—undescended testes, hidden inside a body that had grown and developed like that of any woman.

