An FHA loan is a home loan that is insured by the FHA. 1  In other words, the offers a guarantee to your bank: if you fail to repay the mortgage, FHA will step up and repay the bank instead.
Freebase(0.00 / 0 votes)Rate this definition: Superior mesenteric artery syndrome. Superior mesenteric artery syndrome is a very rare, life-threatening gastro-vascular disorder characterized by a compression of the third portion of the duodenum by the abdominal aorta and the overlying superior mesenteric artery.
Background. Superior mesenteric artery (SMA) syndrome is an uncommon but well recognized clinical entity characterized by compression of the third, or transverse, portion of the duodenum between the aorta and the superior mesenteric artery.This results in chronic, intermittent, or acute complete or partial duodenal obstruction.uperior mesenteric artery syndrome was first described in 1861 by Von Rokitansky, who proposed that its cause was obstruction of the third part of the duodenum as a result of arteriomesenteric compression.