A 19-year-old woman had never menstruated, and tests revealed that her body had male chromosomes

Por Sebastián Jerez
10 August, 2026

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.

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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.

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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.

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