When in 1933 Lina Medina was taken to hospital in Peru, the doctors suspected tumor in her abdomen. The girl was 5.7 years old. But after examination, it turned out that the girl was… pregnant. Six weeks later, she gave birth to a healthy baby, weighing 2.7 kg. It turned out that the girl had reached puberty by the age of 4. She did not confess who impregnated her.