Hereditary multiple benign cystic epithelioma (multiple trichoepithelioma) with onset at early age.

A mother and a daughter affected with multiple trichoepithelioma were studied. The age of onset of the symptomatology in both was 7-years-old, the daughter being more severely affected than the mother at this age. This early age of onset is an exceptional observation which could be explained by maternal imprinting.