There are two distinct vascular compression disorders due to compression of another structure by the superior mesenteric artery. The terminology is sometimes confusing and they can occur in association.
superior mesenteric artery syndrome (Wilkie syndrome): compression of the third part of the duodenum by the SMA
nutcracker syndrome (renal vein entrapment syndrome): compression of the left renal vein by the SMA
- 1. Fong JK, Poh AC, Tan AG, Taneja R. Imaging findings and clinical features of abdominal vascular compression syndromes. AJR. American journal of roentgenology. 203 (1): 29-36. doi:10.2214/AJR.13.11598 - Pubmed