Nutcracker syndrome: treatment with an intravascular stent / 대한내과학회지

ABSTRACT

The nutcracker syndrome refers to compression of the left renal vein between the aorta and the superior mesenteric artery, which results in renal vein and left gonadal vein varices. This is an unusual, but well accepted cause of hematuria. We report a case of the nutcracker syndrome which is diagnosed by CT angiography before venography and pressure measurement of the left renal vein and managed by intravascular stent placement. A 47-year-old female patient was presented with gross hematuria. Urinalysis revealed hematuria with only 1% of dysmorphism. Abdominal spiral CT and 3D CT angiography revealed compression of the left renal vein between the aorta and superior mesenteric artery because of an acute branching angle of superior mesenteric artery from the aorta. Renal venography showed compression of the left renal vein and collateral circulations to the left ovarian vein and lumbar vein. The pressure gradient between the left renal vein and inferior vena cava was 4 mmHg. Intravascular stent was placed in this patient. We conclude that in patients with the nutcracker syndrome, CT angiography could be considered before venography and venous pressure measurements. When this syndrome leads to clinical symptoms, Intravascular stent placement should be considered. Well designed stent offers minimal invasiveness and physiologic relief as in the present case.