[Plain film findings in the skull in neurofibromatosis (author's transl)].

The radiologically demonstrable changes in the skull, which occur in neurofibromatosis, are described. The mesodermal dysplastic changes in the sphenoid and the facial skeleton are diagnostic. Changes secondary to blastomatous processes are not always a consequence of the presence of a tumour; they may result from developmental abnormalities or dural protrusion. In addition one may encounter a series of changes which are not in themselves diagnostic. Problems in the diagnoses and the differential diagnosis are discussed.