Clinical Analysis of Posterior Fossa Tumors

ABSTRACT

We analyzed the 43 cases of the posterior fossa tumors at the Busan Paik Hospital, Inje Medical College from January 1980 to December 1986. The posterior fossa tumors included 12 cases of cerebellar astrocytoma, 10 cases of acoustic neurinoma, 5 cases of medulloblastoma, 5 cases of brain stem glioma, 2 cases of meningioma, 2 cases of hemangioblastoma, 2 cases of tuberculoma, 1 case of glioblastoma multiforme, 1 case of oliodendroglioma, 1 case of rhabdomyosarcoma, 1 case of glomus jugulare tumor and 1 case of arteriovenous malformation. The posterior fossa tumors were occupied on the cerebellar hemisphere in 18 cases, the cerebellar vermis in 8 cases, the cerebellar pontine angle in 12 cases and the brain stem in 5 cases. The 25 cases out of the 43 cases of the posterior fossa tumors were accompanied with hydrocephalus. The 10 cases received the radiation therapy and/or the chemotherapy after operation. After treatment of the posterior fossa tumors, 52.6% favorable outcome, 34.2% unfavorable outcome and 13.2% mortality were estimated.