1.   Although high serum cholesterol concentrations are predictive of coronary heart disease, controversy exists as to the relation between serum cholesterol and colorectal carcinoma.

2.   Patients with Zollinger-Ellison syndrome and raised concentrations of serum pepsinogen A are often found to have high serum pepsinogen C values.

3.   The reason for the high serum pepsinogen C concentrations in this group is probably related to the trophic effect of gastrin on the oxyntic mucosa.