Citation, DOI & article data
The ascending colon is the second part of the large bowel.
The ascending colon is the continuation of the cecum superior to the ileocecal valve. It is secondarily retroperitoneal, although it has its own mesentery in approximately 25% of patients and is 15 cm in length 1,2.
The ascending colon courses up the right posterior abdominal wall until it reaches the level of the right kidney and courses anteromedially to form the hepatic flexure, where it continues as the transverse colon 1,2.
- anterior: loops of small bowel, greater omentum, anterior abdominal wall
- posterior: posterior abdominal wall
- inferior: cecum, terminal ileum
- laterally: right paracolic gutter
- medially: right inframesocolic space 1
- colic branch of the ileocolic artery and right colic arteries - branches of superior mesenteric artery 2
- veins, similarly named to arteries, draining into portal venous system 2
- also drains via the lumbar veins (as it is retroperitoneal) to the inferior vena cava - this is a pathway for portal-systemic collateral pathways 3
- 1. Paul Butler, Adam Mitchell, Jeremiah C. Healy. Applied Radiological Anatomy. (2012) ISBN: 9780521766661 - Google Books
- 2. Cornelius Rosse, Penelope Gaddum-Rosse, William Henry Hollinshead. Hollinshead's Textbook of Anatomy. (1997) ISBN: 0397512562 - Google Books
- 3. Michael Schünke, Erik Schulte, Udo Schumacher et al. Neck and Internal Organs. (2010) ISBN: 9781604062946 - Google Books