Polythelia – supernumerary nipples
Excess nipples are due to incomplete regression of the milk line in the unborn child in the womb.
They are detected in two to three percent of newborns and can run in families. A connection with renal malformation is controversially discussed. Supernumerary nipples usually occur on one side, occasionally with an areola and individual hairs. The technical term for this is polythely.
Where do the supernumerary nipples develop?
Supernumerary nipples usually occur in the immediate vicinity of the breast above the pectoral muscle or near the armpit, less frequently on the abdomen. After removal, the tissue is examined histologically to obtain certainty about the benign findings.
