[Iniencephaly: description of a case].

We report on a spontaneously aborted female fetus with iniencephaly. Iniencephaly is an uncommon, but not rare, abnormality which is characterized by defect of the squamous part of the occipital bone, and body and arch of the cervical vertebrae; by prolapse of the brain from distended occipital foramen; by severe lordosis with consequent uptilting face; and often by spina bifida. Iniencephaly may be associated with several other defects. The fetus reported here had no other defects.