paraduodenal fold

par·a·du·o·de·nal fold

[TA] a sickle-shaped fold of peritoneum, sometimes found arching between the left side of the duodenojejunal flexure and the medial border of the left kidney; its right free edge contains the ascending branch of the left colic artery and inferior mesenteric vein; forms anterior boundary of the paraduodenal recess.
See also: paraduodenal recess. Synonym(s): plica paraduodenalis [TA], Treitz arch

Treitz,

Wenzel, Bohemian pathologist, 1819-1872. Treitz arch - a sickle-shaped fold of peritoneum that forms the anterior boundary of the paraduodenal recess. Synonym(s): paraduodenal foldTreitz fascia - fascia behind the head of the pancreas.Treitz fossa - an inconstant depression in the peritoneum extending posterior to the cecum. Synonym(s): subcecal fossaTreitz hernia - hernia in the subperitoneal tissues. Synonym(s): duodenojejunal herniaTreitz ligament - Synonym(s): suspensory muscle of duodenumTreitz muscle - Synonym(s): suspensory muscle of duodenum