Figure 4

Interpretive findings (ab: first operation cd: second operation). a: The tracheal wall was bulging so that the mass was thought to be present intramurally. b: Mucus leaked when the wall was pinched and tracheal mucosa was exposed. c: Tracheal resection and end-to-end anastomosis was performed under operative field intubation. d: After end-to-end anastomosis.