Bronchogenic cyst causing superior vena cava obstruction: CT appearance.

The CT appearance of bronchogenic cysts is well known. In addition, CT is useful in evaluating cases of suspected superior vena cava (SVC) syndrome. Although most cases of SVC syndrome are caused by malignant diseases, certain benign disorders such as granulomatous infections may be the underlying cause. A case of a bronchogenic cyst causing SVC occlusion is presented here.