[Idiopathic osteolysis type Hajdu-Cheney in early childhood (author's transl)].

Severe clinical and radiological signs of the rare idiopathic osteolysis, type Hajdu-Cheney were manifest in a seven year old girl. A peculiar aspect of her face was evident since birth. The acroosteolysis and a general osteoporosis were radiologically visible when she was three years old. During the following 4 years there was a fast progression of the bone abnormalities and the shape of the skull became dolichocephalic.