Pulmonary resection of lung cancer in a patient with partial anomalous pulmonary venous connection.

We report a case of a 64-year-old man in whom a partial anomalous pulmonary venous connection (PAPVC) was found before right lower lobectomy for lung cancer. In addition to lung cancer, there was a right superior pulmonary vein that drained into the superior vena cava (SVC). There was a concern of right ventricular heart failure resulting from increased left-to-right shunt flow after lobectomy. Therefore cardiac catheterization was performed to calculate the pulmonary-to-systemic flow rate in the presence of blocked blood flow to the lower lobe pulmonary artery. As a result, we successfully performed lobectomy without correcting the PAPVC.