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ICS often presents as sudden unilateral left lower extremity pain and swelling in young to middle-aged female patients after pregnancy, surgery, or a period of inactivity. Venography, intravascular ultrasound, and magnetic resonance venography demonstrate high sensitivity, whereas APG-outflow fraction demonstrates low sensitivity in the diagnosis of ICS. Endovascular stenting and angioplasty provide safe and effective early and intermediate-term treatment of symptomatic ICS.

The sheath that develops around central venous catheters in the swine model consists of cellular and noncellular components. A substantial proportion of the sheath is made up of a smooth muscle cell and collagen layer with overlying endothelial cells.

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The prevalence of a hemodynamically significant stenosis isolated to an accessory renal artery was 1.5% in our study. Thus, failure to detect accessory renal arteries should not unduly affect the utility of a noninvasive test for detecting renovascular hypertension.