Can diverticula occur in the remainder of the upper GI tract

Can diverticula occur in the remainder of the upper GI tract?

Yes. Gastric diverticula almost always occur in the posterior aspect of the gastric fundus. Duodenal diverticula are most often seen along the medial aspect of the second portion of the duodenum and to a lesser extent in the third and fourth portions of the duodenum. Jejunal and ileal diverticula can also occur but are uncommon. Meckel’s diverticulum, a congenital true diverticulum, typically arises from the antimesenteric border of the distal ileum within 100 cm of the ileocecal valve.

On CT and MRI, diverticula of the upper GI tract may be filled with gas, fluid, and/or oral contrast material. When completely fluid-filled, they may sometimes mimic the appearance of cystic lesions arising from adjacent organs. When large in size, they may exert mass effect upon adjacent structures.

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