A 72-year-old man was admitted complaining of laryngeal discomfort. A coronary angiogram showed a total occlusion of the LAD, a 90% stenosis of the 1st diagonal branch and well-developed collaterals from the LCX to the LAD. A chest X-ray showed a consolidation with unclear border at the left hilus of the lung. A lung biopsy through the bronchus revealed an adenocarcinoma of the left lower lung. He underwent a concomitant CABG operation without a cardiopulmonary bypass and a left lower lobectomy with lymph node dissection. The CABG was performed by left anterior small thoracotomy in the supine position and the lobectomy was performed by left posterolateral thoracotomy in the right lateral position. An intraoperative postural conversion was useful to obtain a good field in each operation and to prevent hemodynamic deterioration due to heart compression.