PMC7708678_01
Blockage of trachea by blood clots.
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Fiberoptic bronchoscopy revealed the trachea and main bronchi to be completely blocked by blood clots (Figure 1).
Contrast agent spilling from the distal end of the right pulmonary bronchial artery.
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Embolization, with microcoils and gelatin sponge particles (350-560 microm; Hangzhou Alekang), was then performed (Figure 2), and the patient was transferred back to the intensive care unit, where a repeat fiberoptic bronchoscopy showed complete airway obstruction.
Histopathological examination of a clot specimen showed degenerative necrotic tissue but no epithelial cell component, and congestion and bleeding in the bronchial mucosa.
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Equipment Co., Ltd.; Beijing, China) was performed under fiberoptic bronchoscopy (Olympus bf-260; Germany). Endotracheal cryotherapy was repeated (for a total three times) until bronchoscopic evaluation confirmed no obstruction of the trachea and no active bleeding in the airway (Figure 3).
Computed tomography of the lung showed a few cords in the left upper lung.
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At 3-month follow-up, there was no hemoptysis, and a few cord-shaped shadows remained in the left upper lung on CT scan (Figure 4).