Autopsy findings in a clinical case after pulmonary resection using the bronchial ablation technique. a Macroscopic findings. b Hematoxylin–eosin staining. × 40 magnification. c α-smooth muscle actin (α-SMA) staining. × 40 magnification. The red arrow indicates the innermost layer of the sutured bronchial mucosa, and the black arrow indicates the lesion of mucosal tight adhesion.