Dyspnea after discharge from hospital due to pulmonary vein thrombosis after video-assisted left upper lobectomy: a case report.

Left upper lobe resection is particularly associated with pulmonary venous thrombosis, and dyspnea due to pulmonary venous thrombus may develop late after surgery. Postoperative management methods such as anticoagulation and postoperative pain management should be reexamined.