case_images: PMC7322740_01
case_images: (A) Cervical/chest computed tomography scan (coronal view) taken at the onset, showing tracheal stenosis at the level of the 2nd to 4th rings (arrow). (B) Bronchoscopy image, showing a 75% constriction of the tracheal lumen due to cicatrization.
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case_images: PMC7322740_01_gr1.jpg
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case_images: CT imaging would have little influence on the fetus. Cervical and chest CT scan showed upper tracheal stenosis, of a length of 18 mm (Fig. 1A).
case_images: (A) Bronchoscopy image showing cicatrization tissue in the tracheal lumen ablated by bronchoscopic argon plasma coagulation. (B) Bronchoscopy showing successful dilation of the tracheal lumen at 2 months after endotracheal treatment.
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case_images: PMC7322740_01_gr2.jpg
case_images: fig0010
case_images: Tubingen, Germany) was introduced via the forceps channel. The scar tissue on the 2nd to 4th ring was ablated until the tracheal lumen was satisfactorily dilated (Fig. 2). Treatment was uneventfully completed in approximately 2 h.
case_images: Flow volume curves (A) before and (B) 4 months after endotracheal dilation therapy, showing marked improvement of peak expiratory flow.
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case_images: PMC7322740_01_gr3.jpg
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case_images: The patient was free of complaints at follow-up at three years after the treatment (Fig. 3).