human cg-alpha-immunoreactive cells were present in 42 of 56 ( 75 % ) functioning malignant pancreatic endocrine tumors but in only one , possibly benign , glucagonoma of 67 functioning benign tumors , in only one of 17 nonfunctioning malignant and in none of 17 nonfunctioning benign tumors .
C1328479
malignant pancreatic endocrine tumors
C0017689
glucagonoma