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A 68-year-old man with hypertension presented with vague abdominal pain. Ultrasonography of the abdomen showed a renal mass in the left kidney. A computed tomographic scan of the abdomen showed a mass consistent with a renal-cell carcinoma in the upper pole of the left kidney (arrowhead) and a duplication of the inferior vena cava (arrow). The aorta, which has calcifications, can be seen between the duplicate inferior vena cavae. The inferior vena cava is formed between weeks 6 and 10 of gestation. Duplication occurs in 0.2 to 3.0% of the general population. The infrarenal portion of the inferior vena cava . . . [Full Text of this Article] |
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