Endoscopic examination, therapy or surgery of the luminal surface of the duodenum.

Surgery of the smooth muscle sphincter of the hepatopancreatic ampulla to relieve blocked biliary or pancreatic ducts.

A dilation of the duodenal papilla that is the opening of the juncture of the COMMON BILE DUCT and the MAIN PANCREATIC DUCT, also known as the hepatopancreatic ampulla.

Tumors or cancer of the DUODENUM.

Procedures of applying ENDOSCOPES for disease diagnosis and treatment. Endoscopy involves passing an optical instrument through a small incision in the skin i.e., percutaneous; or through a natural orifice and along natural body pathways such as the digestive tract; and/or through an incision in the wall of a tubular structure or organ, i.e. transluminal, to examine or perform surgery on the interior parts of the body.

The largest branch of the celiac trunk with distribution to the spleen, pancreas, stomach and greater omentum.

The black, tarry, foul-smelling FECES that contain degraded blood.

Pathological processes of the PANCREAS.

Ducts that collect PANCREATIC JUICE from the PANCREAS and supply it to the DUODENUM.

Bleeding in any segment of the GASTROINTESTINAL TRACT from ESOPHAGUS to RECTUM.

Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)

Pathological outpouching or sac-like dilatation in the wall of any blood vessel (ARTERIES or VEINS) or the heart (HEART ANEURYSM). It indicates a thin and weakened area in the wall which may later rupture. Aneurysms are classified by location, etiology, or other characteristics.