analysis of the clinical and autopsy reports of 200 deaths following surgery for colorectal cancer from 1956 to 1974 , at the dept . of surgery , university of heidelberg , revealed that pneumonia ( 24.5 % ) was the most common cause of death followed by peritonitis ( 22 % ) , pulmonary embolism ( 15.5 % ) , advanced tumor disease ( 14 % ) , cardiac failure ( 9.5 % ) , ileus ( 5.5 % ) , and others ( 9 % ) .
C0006826
cancer
C0027651
tumor