[Simultaneous discovery of osteopetrosis in a mother and fetus on the occasion of radiopelvimetry (author's transl)].

On the occasion of radiopelvimetry, requested for suspected narrowed pelvis, osteopetrosis was discovered simultaneously in the mother and fetus. At birth, the child was perfectly normal and subsequently showed no clinical or laboratory disorder apart from diffuse osseous condensation. The genetic enquiry proved difficult owing to the family situation and up to this day it is not complete and definitively stopped. Although the beginning of the osseous disorders starts in the fetus on an average at the 4th to 5th month of pregnancy, Albers-Schonberg disease is exceptionally diagnosed during the parenatal period. In fact, the incidence of osteopetrosis in the population remains low and on the other hand prenatal radiological examinations are sparingly requested for specific clinical indications. It is the simultaneous discovery of the condition in the mother and the fetus which makes this case a novel one. The discovery of the fetal involvement does not permit prediction concerning progress towards a benign or malignant form.