Glioblastoma multiforme in three family members, including a case of true multicentricity.

Three cases of glioblastoma multiforme are described, occurring in two brothers and the sister of their father. One of the cases was found at autopsy to represent true multicentric glioblastoma, with five widely separated lesions affecting both hemispheres. It is postulated that there may be an association between factors responsible for multiple foci of transformation and a familial tendency to develop glioma.