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A rare cause of secondary hypertension: median arcuate ligament compression of the renal artery diagnosed by CT angiography

A 44-year-old woman with a recent onset of hypertension was referred for renal Doppler ultrasonographic evaluation for secondary hypertension. There were no diseases in the medical history excluding hypertension. On physical examination, arterial blood pressure was 145/90 mm Hg. Other physical examination and laboratory findings were not significant. Doppler ultrasonographic examination showed increased peak systolic velocity (240 cm/sn) and luminal narrowing in the proximal portion of the right renal artery. After that, contrast-enhanced multi-slice CT was performed. The arteries were evaluated with postprocessed images obtained by multiplanar reformation, maximum intensity projection and volume rendering techniques. CT showed bilateral single renal arteries. …