lobar artery of spleen

The lobar artery of the spleen is a terminal branch of the splenic artery that arises at the splenic hilum and supplies one of the lobes of the spleen. It is part of the segmental arterial supply of the spleen.

The lobar artery of the spleen originates at the splenic hilum, where the splenic artery divides into one or two terminal branches. These branches enter the splenic parenchyma to supply distinct lobar segments.

The lobar artery of the spleen delivers oxygenated blood to a distinct lobe of the splenic parenchyma, supporting the immunological and filtering functions of that splenic segment.

The lobar artery of the spleen may be involved in splenic infarction when occluded, as the spleen has limited collateral circulation within its lobar segments. Splenic artery aneurysms may also extend to affect the lobar branches at the hilum.

The lobar artery of the spleen is a medium-sized arterial branch visible at the splenic hilum on CT angiography or splenic arteriography, typically appearing as one of one to two main terminal divisions of the splenic artery entering the splenic parenchyma.