Nutcracker Syndrome (NCS) is a clinical condition that occurs as a result of compression of the left renal vein. The syndrome was first described by Grantin in 1937. The most common compression of the left renal vein between the aorta and superior mesenteric artery. As a result, this type is defined as the "anterior type". Less commonly, "posterior NCS" may occur as a result of compression of the retroaortic left renal vein between the aorta and the vertebra. Pressure on the left renal vein obstructs blood flow The resulting increase in pressure in the vein causes congestion in the left kidney.
