The remaining lung infarction is a rare but life-threatening complication after a thoracic operation and trauma. We report a case of this rare complication after the left upper lobectomy due to pulmonary aspergilloma. The infarction of the remaining left lower lobe occurred due to kinking of the pulmonary vessels after the left upper lobectomy and the completion pneumonectomy was performed in the post-operative second day. Therefore, prompt diagnosis and treatment may be necessary to prevent morbidity and mortality associated with pulmonary infarction from torsion of pulmonary artery and vein.