15-Letter Words Starting: CHO

• surgical removal of the gall bladder (usually for relief of gallstone pain)

• roentgenographic examination of the bile ducts after a contrast medium has been injected

• a gastrointestinal hormone that stimulates the secretion of pancreatic enzymes and the contraction and emptying of the gall bladder; its release is stimulated by the presence of fatty acids and amino acids in the small intestine

• a fat-soluble vitamin that prevents rickets

• the area of mesoderm that forms the notochord

• A malignant, trophoblastic cancer, usually of the placenta.