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| superior mesenteric artery | |
|---|---|
| Name | Superior mesenteric artery |
| Latin | Arteria mesenterica superior |
| System | Circulatory system |
| Branches | Inferior pancreaticoduodenal artery; Jejunal arteries; Ileal arteries; Ileocolic artery; Right colic artery; Middle colic artery |
| Supplies | Midgut |
superior mesenteric artery The superior mesenteric artery arises from the anterior aspect of the abdominal aorta and supplies the midgut from the distal duodenum to the proximal two-thirds of the transverse colon. Its relation to the pancreas, duodenum, and inferior vena cava is important in procedures described in texts used at Johns Hopkins Hospital, Mayo Clinic, and Massachusetts General Hospital. Variants and pathologies of the artery are discussed in guidelines from organizations such as the American College of Surgeons and the European Society for Vascular Surgery.
The artery originates just inferior to the origin of the branch to the celiac trunk near the level of the vertebrae described in atlases produced by Netter and Gray's Anatomy. Major branches include the inferior pancreaticoduodenal artery, the jejunal and ileal arteries, the ileocolic artery, the right colic artery, and the middle colic artery, which provide arterial arcades and vasa recta analogous to descriptions found in works from Guy's Hospital and St Thomas' Hospital. Anatomical relations include the third part of the duodenum, which lies posterior to the artery as illustrated in cadaveric studies led by researchers from University of Oxford and University of Cambridge. Variations such as replaced right colic or accessory branches have been catalogued in series from Cleveland Clinic and Karolinska Institute.
Embryologic origins trace to the vitelline arteries and the dorsal aorta, a developmental narrative consistent with embryology texts used at Harvard Medical School and University of Pennsylvania. The artery’s segmental patterning parallels the rostrocaudal gut tube regionalization reviewed by groups at Institute Pasteur and Max Planck Society. Congenital anomalies—such as high origin, abnormal branching, or persistent vitelline remnants—are reported in case series from Tokyo University and All India Institute of Medical Sciences.
The superior mesenteric artery provides oxygenated blood to midgut structures including the distal duodenum, jejunum, ileum, cecum, appendix, ascending colon, and proximal transverse colon; this perfusion supports absorptive and digestive functions discussed in physiology curricula at Stanford University and University of California, San Francisco. Its branches form arterial arcades that ensure collateral flow, a principle emphasized in surgical manuals from Royal College of Surgeons and perfusionist protocols at Guy's and St Thomas' NHS Foundation Trust.
Acute mesenteric ischemia, chronic mesenteric ischemia, aneurysm formation, dissection, and embolic occlusion are major clinical issues involving the artery described in position statements by the Society for Vascular Surgery and case series from Mount Sinai Hospital and Johns Hopkins Hospital. Risk factors and associations overlap with conditions managed by American Heart Association and European Society of Cardiology guidelines, including atherosclerosis, atrial fibrillation, and connective tissue disorders characterized in cohorts at Mayo Clinic and Cleveland Clinic. Syndromes such as superior mesenteric artery syndrome (vascular compression of the duodenum) are differentiated clinically and radiographically in reports from Massachusetts General Hospital and University College London Hospitals.
Computed tomography angiography protocols used at Massachusetts General Hospital and Mayo Clinic enable diagnosis of occlusion, stenosis, aneurysm, and compression; duplex ultrasonography as performed at Karolinska Institute offers noninvasive hemodynamic assessment. Conventional catheter angiography remains the reference standard in interventional suites at Cleveland Clinic and Johns Hopkins Hospital and is used for both diagnosis and endovascular treatment. Magnetic resonance angiography protocols from University of California, Los Angeles and nuclear medicine evaluations described at Memorial Sloan Kettering Cancer Center may assist in specific situations.
Revascularization strategies include open bypass, endarterectomy, thrombectomy, and endovascular angioplasty with stenting, techniques refined in centers such as Mayo Clinic, Cleveland Clinic, and Royal Infirmary of Edinburgh. Management of aneurysms and ruptures involves options developed in trials and series from Society for Vascular Surgery collaborators and multicenter registries involving European Society for Vascular Surgery members. Surgical approaches must account for adjacent organs described in operative texts from Oxford University Press and intraoperative decision-making frameworks taught at Johns Hopkins Hospital and Massachusetts General Hospital.
Category:Arteries of the abdomen