Purpose: Resection and reconstruction of the inferior vena cava (IVC) is an unusual and challenging procedure. Malignant disease invading or obstructing IVC is the most frequent entity, while nonmalignant is rare and differential diagnostic is difficult. Methods: We report two cases required resection and reconstruction of IVC. Results: A 31-year-old man with left lower extremity paresthesias. His work-up revealed a large (9x3 cm) mass at the right renal hilum involving the IVC and right renal vein (RV) with complete thrombosis of bilateral external and common iliac veins (CIV), as well as the infrarenal IVC. The tumor contacted the aorta in greater than 90 degrees, as well as the third portion of the duodenum.Surgical intervention: through a midline laparotomy, we attained complete control of the IVC (above and below) as
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