CT diagnosis of catheter-induced septic thrombus of vena cava.

Two cases of septic thrombosis of the vena cava induced by central venous catheterization are reported. Computed tomography showed thrombi containing gas bubbles in the venae cavae; one involving the superior vena cava and the other the left-sided inferior vena cava. Computed tomography also demonstrated surrounding inflammatory infiltrations in the upper mediastinum or retroperitoneum.