hemorrhage from brain tumor was confirmed clinically , surgically , or on autopsy in 94 of 1861 cases ( 5.1 % ) treated during the past 18 years : 49 of 311 pituitary adenomas ( 15.8 % ) and 45 of 1550 other brain tumors ( 2.9 % ) .
C0027651
tumor
C0032000
of