text: <unk>  cerebri is a rare brain tumor. The incidence of<unk>  cerebri is estimated to be less than 100 cases per year in the United States.<unk>  cerebri is a disease that tends to affect the middle-aged population. The peak incidence for<unk>  cerebri is 20-40 years. The median age at diagnosis is 34 years. Males are more commonly affected with<unk>  cerebri than females. The male to female ratio is approximately 1.5 to 1.
option_0: Gliomatosis cerebri epidemiology and demographics
option_1: Meningioma epidemiology and demographics
option_2: Cerebral venous sinus thrombosis epidemiology and demographics
option_3: Gliomatosis cerebri classification
option_4: Glioblastoma multiforme epidemiology and demographics
option_5: Gliomatosis cerebri pathophysiology
option_6: Astrocytoma epidemiology and demographics
option_7: Subarachnoid hemorrhage epidemiology and demographics