five cases of gastric carcinoma , two of esophageal carcinoma , 21 of benign peptic ulcer , one case of carcinoma eroding into the bile duct , one case of carcinoma of the pancreas penetrating into the stomach , five normal controls on no medication and two normal controls taking vitamin b ( 2 ) were studied .
C0699791
gastric carcinoma
C0038351
stomach