The three most important pancreatic tumors are carcinoma of the exocrine pancreas (pancreatic adenocarcinoma of duct origin), islet cell tumors producing insulin (insulinoma), and islet cell tumors producing gastrin (gastrinoma) associated with the Zollinger-Ellison (Z-E) syndrome. Exocrine adenocarcinoma. Carcinoma of the pancreas as a descriptive term usually refers to an adenocarcinoma of the exocrine pancreatic […]
These are found mainly in the GI tract, although a minority are located in the lungs and a few arise in other locations. The appendix is the most frequent site of origin; these are almost always benign. Carcinoid are next most frequent in the terminal ileum and colon; these are frequently malignant. Carcinoid are considered […]
Tumors of the upper gastrointestinal tract The major benign disease of the upper GI tract area is peptic ulcer; those of the lower GI tract are diverticulosis and mucosal polyp. The malignant disease usually affecting either area is the same—adenocarcinoma. The major clinical symptom of peptic ulcer is epigastric pain that occurs between meals and […]
