The bone defects of the cranial vault encompassed rare malformations including acalvaria, hypocalvaria,acrania,
hypocrania, anencephaly and exencephaly. They are also described in some pathological
entities such as aplasia cutis congenita of the scalp.We report
an unusual case of cephalic malformation which combine defects of the skin, the
dura mater, and the bones of the vault, with a malformation of the central nervous
system. This unique case emphasizes a problem of nosological definition between
the terms mentioned above. acalvaria, the acrania, the hypocalvaria and the aplasia
cutis congenita. Thus, herein, we proceed to a literature review of bone defects
of the skull and their differential diagnosis.
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