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

BACKGROUND: Thrombus formation at the pulmonary vein transection site is more common in left upper lobectomy than other lobectomies. We report a case of dyspnea and contrast-enhanced computed tomography (CT) findings of pulmonary vein thrombosis after left upper lobectomy. CASE PRESENTATION: A 68-year-old man with left lung cancer underwent video-assisted thoracoscopic left upper lobectomy under general anesthesia with thoracic epidural analgesia. He had no postoperative complications and was discharged home on the 5th day postoperatively. He visited the outpatient clinic at 8 days after surgery because of dyspnea and underwent contrast-enhanced CT, which revealed a thrombus at the resected edge of the left upper pulmonary vein. Anticoagulation therapy was started. Thereafter, the thrombus shrank, and the patient’s dyspnea improved. CONCLUSIONS: 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.