PMC7303975_01
Chest CT of Patient 1: Chest CT revealed the destroyed left lower lobe bronchial stump (arrow), suggesting postoperative BPF.
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Chest computed tomography (CT) revealed the destroyed left lower lobe bronchial stump (Fig. 1).
Bronchoscopic findings in Patient 1:(A) Ethyl-2-cyanoacrylate was injected into the left lower lobe bronchial stump through the guide sheath. (B) The mucosa around the bronchial stump changed to a whitish color after injection. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)
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Ethyl-2-cyanoacrylate (1.0 ml) was injected into the left lower lobe bronchial stump through the guide sheath (Fig. 2A). The mucosa around the bronchial stump changed to a whitish color about 50 seconds after injection (Fig. 2B).
PMC7303975_02
Chest CT of Patient 2: (A) Chest CT showed occluded EWS in the right B2 of the destroyed shrunken right lung (arrow heads). (B) Chest CT showed that the EWS that had occluded the right B2 had fallen into the thoracic cavity (arrow).
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Chest CT showed an occluded EWS in the right B2 of the destroyed right lung (Fig. 3A). Although air leakage was not observed just after endoscopic bronchial occlusion using EWS, EWS occluding B2 had fallen into the thoracic cavity because the BPF was larger than 7 mm, and air leakage recurred on postoperative day 8 (Fig. 3B).
Bronchoscopic findings in Patient 2: (A) The bronchoscope was deployed into the right upper lobe bronchus. (B) EWS was placed into the right B2 using grasping forceps. (C) Ethyl-2-cyanoacrylate was injected through the guide sheath into the space between the bronchial wall and EWS. (D) Ethyl-2-cyanoacrylate hardened and changed to a white color about 60 seconds after injection. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)
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The bronchoscope was deployed into the right upper lobe bronchus through an endotracheal tube (Fig. 4A). After confirming that the air leakage was localized to the right B2, EWS (7 mm) was again placed in the target bronchus (Fig. 4B). EWS (Fig. 4C). Ethyl-2-cyanoacrylate rapidly hardened and changed to a white color about 60 seconds after injection (Fig. 4D).