Abstract
THERE is a widespread impression among the pediatric and general medical profession, and perhaps among the lay public as well, that virtually all intracranial tumors in early childhood present a hopeless outlook for useful survival or for normal growth and development. During the age period from five to ten, two main types of highly malignant inoperable tumors of the brain are commonly found.1 2 3 4 The first of these is the medulloblastoma, perhaps the most rapidly growing and highly malignant of all brain neoplasms, arising in the roof of the fourth ventricle, filling its lumen, invading the cerebellum and seeding often by . . .