Table 4. Procedures of UROR for different indications.

Indication	Procedure
Bleeding (n=53)	Inspection, washing and hemostasis + lobectomy of congested lobe in two cases
Chylothorax (n=3)	Ligation of thoracic duct
Chest cavity infection (n=3)	Debridement and drainage
Persistent air leak (n=2)	Wedge resection of ruptured bulla
Esophageal perforation (n=2)	Repair of perforation and drainage
Artery thrombus (n=1)	Interventional removal of tumorous embolus

UROR, unplanned return to the operation room.