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Anterior cecal artery

The anterior cecal artery is a small but important branch of the ileocolic artery, which itself arises from the superior mesenteric artery (SMA). It runs anteriorly along the wall of the cecum, supplying the anterior surface of the cecum, including portions of the anterior tenia coli and adjacent mucosa. It usually forms an arcade with the posterior cecal artery, contributing to a vascular network that ensures dual supply to the cecum. The anterior cecal artery also gives small branches to the ileocecal region and anastomoses with adjacent arterial branches, including the appendicular artery in some individuals.

Clinically, the anterior cecal artery is relevant in ileocecal resections, appendectomies, and right hemicolectomy surgeries, as well as in the context of ischemic colitis, inflammatory bowel disease, and gastrointestinal bleeding. Knowledge of its anatomy is also important for interventional radiology procedures such as embolization for lower GI bleeding.

Synonyms

  • Cecal anterior artery

  • Anterior branch of ileocolic artery

Function

  • Supplies arterial blood to the anterior wall of the cecum

  • Contributes to collateral circulation of the ileocecal junction

  • Sometimes provides small branches to the appendicular artery

  • Ensures dual supply with posterior cecal artery, reducing risk of ischemia

MRI Appearance

T1-weighted images:

  • Appears as a thin linear flow void (black lumen) along the anterior cecal wall

  • Surrounded by hyperintense fat planes of the mesentery

T2-weighted images:

  • Vessel appears as a signal void against intermediate bowel wall signal

  • Hyperintense bowel wall edema may highlight course of the artery in inflammatory conditions

STIR:

  • Suppresses fat signal, helping to outline the artery within mesenteric fat

  • Inflammation or perivascular edema appears bright hyperintense

T1 Fat-Saturated Post-Contrast:

  • Artery enhances brightly and homogeneously following gadolinium

  • Demonstrates the artery as it runs along the anterior cecal wall

  • Useful for detecting abnormal neovascularization or vascular lesions

T1 Fat-Saturated (non-contrast):

  • Lumen shows intermediate signal intensity, standing out against the suppressed fat of the mesoappendix

  • Allows clearer differentiation from surrounding tissues

MRA (Magnetic Resonance Angiography):

  • Contrast-enhanced MRA shows the anterior cecal artery arising from ileocolic artery

  • Depicts arterial arcades, anastomoses, and small branches supplying the anterior cecum

  • Useful for pre-surgical planning or in patients with GI bleeding or mesenteric ischemia

CT Appearance

CT Pre-Contrast:

  • Artery appears as a small soft-tissue density in mesenteric fat

  • Difficult to distinguish from adjacent structures without contrast

  • Can detect mural calcifications if present in older patients with atherosclerosis

CT Post-Contrast:

  • Artery enhances brightly, becoming clearly visible along the anterior wall of cecum

  • Enhances visualization of the ileocecal vascular arcade

  • Detects active extravasation of contrast in cases of GI bleeding

CT Angiography (CTA):

  • Gold-standard for non-invasive evaluation

  • High-resolution multiplanar and 3D reconstructions show the origin from ileocolic artery, course along anterior cecum, and its arcades with posterior cecal artery

  • Useful for detecting ischemia, GI hemorrhage, vascular malformations, or surgical mapping

CT images

Anterior cecal artery CT axial anatomy image -img-00000-00000

CT images

Anterior cecal artery ct axial image

MRI image

Anterior cecal artery MRI coronal image-img-00000-00000