Lung cancer found in a patient with absence of the inferior vena cava associated with a left superior vena cava.

A patients with anomalies of the main systemic veins developed lung cancer. In this patient, the large hemiazygos vein emptied into the left superior vena cava which communicated with the right atrium through the coronary sinus. The cancer was located in the right upper lobe and directly invaded the mediastinum. Fortunately, because of the absence of a right superior vena cava in the normal position, the tumor was completely resected by sleeve upper lobectomy without necessitating angioplastic procedures.