Computed tomography of a double inferior vena cava: The “double cava” sign

Right-sided retroperitoneal adenopathy or right adrenal masses demonstrated by CT in cross sectional display may mimic the CT appearance of the inferior-vena cava. This finding has been recently described as the “double cava” sign. The authors report this sign in a patient who actually has a double IVC. “CT angiography”, with the technique described herein, will determine that the retroperitoneal structures demonstrated by CT are indeed vessels rather than enlarged nodes or adrenal masses.