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  • Title: Nutcracker or left renal vein compression phenomenon: multidetector computed tomography findings and clinical significance.
    Author: Cuéllar i Calàbria H, Quiroga Gómez S, Sebastià Cerqueda C, Boyé de la Presa R, Miranda A, Alvarez-Castells A.
    Journal: Eur Radiol; 2005 Aug; 15(8):1745-51. PubMed ID: 15742169.
    Abstract:
    The use of multidetector computed tomography (MDCT) in routine abdominal explorations has increased the detection of the nutcracker phenomenon, defined as left renal vein (LRV) compression by adjacent anatomic structures. The embryology and anatomy of the nutcracker phenomenon are relevant as a background for the nutcracker syndrome, a rare cause of hematuria as well as other symptoms. MDCT examples of collateral renal vein circulation (gonadal, ureteric, azygous, lumbar, capsular) and aortomesenteric (anterior) and retroaortic (posterior) nutcracker phenomena in patients with no urologic complaint are shown as well as studies performed on patients with gross hematuria of uncertain origin. Incidental observation of collateral veins draining the LRV in abdominal MDCT explorations of asymptomatic patients may be a sign of a compensating nutcracker phenomenon. Imbalance between LRV compression and development of collateral circulation may lead to symptomatic nutcracker syndrome.
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