[A median craniofacial malformation: schizoprosopia. Apropos of 4 cases].

Four cases of a median craniofacial malformation, schizoprosopia, are reported. This rare but compatible with life anomaly is included within the group of neurocristopathies of the nasofrontal bud. Patients affected present signs of more or less severe mediofacial division with, in some cases an associated encephalocele or cranial bone defect. The possible presence of an associated hypopituitarism must be investigated routinely, and substitutive hormone therapy combined with surgical treatment of the various malformations when results are positive.