Familial glioblastoma with hepatic focal nodular hyperplasia.

Two siblings succumbed to glioblastoma multiforme, associated with hepatic focal nodular hyperplasia and cafe-au-lait spots. One sibling had syndactyly and multiple colonic polyps, while the other had an angiomatous malformation in the brain. Their mother died of myasthenia gravis. The findings suggest a hamartomatous syndrome of malformations that predisposes to brain tumors.