Girl grows third nipple…on her foot.

Yep…thats a nipple.

Nope, its not just a spot gone bad, or some kind of infection. Microscopic examination has revealed that its an actual nipple thats decided to grow on her foot instead of the usual places.

A 22-year-old woman sought medical care for a lesion in the plantar region of her left foot, a well-formed nipple surrounded by areola and hair. Microscopic examination of the dermis showed hair follicles, eccrine glands, and sebaceous glands. Fat tissue was noted at the base of the lesion. Clinical and histopathologic findings were consistent with the diagnosis of supernumerary breast tissue, also known as pseudomamma. To our knowledge, this is the first report of supernumerary breast tissue on the foot.

These supernumerary breasts can pop up all over the place, including the face, back, and thigh (and foot, obviously).

These cases of autonomous self-organization and recruitment of organs are extremely interesting—it suggests that a breast would be a fairly easy tissue to grow in a dish.