A primary carcinoid tumor of the mesentery was associated with intestinal obstruction in a 74-year-old man. Increased levels of plasma pancreatic polypeptide were subsequently demonstrated.

or wall of large vessels (celiac axis or superior mesenteric artery) † M1-specific sites defined according to Sobin and Wittekind. M: Metastasis; N: Node; T: Tumor. Data from [21 ...