“…Macrocephaly, megaloencephaly, low I.Q., bilateral hypoacusia and deafness, dysarthria and previously diagnosed tumors of the nervous system in three patients (a low-grade astrocytoma, a spongioblastoma and a meningioma) have been reported in association with dysplastic gangliocytomas of the cerebellum [2,3,6,10,13,14,18]. These findings together with the existence of congenital cases and with cases appearing in early childhood and infants, has induced some investigators to consider that this condition represents a more complex embryological change than a simple hamartomatous transformation of some ganglionic cells in the cerebellum [7,23].…”