case_images: PMC10517870_01
case_images: A large foreign body (angular stone) in the proximal trachea with near-complete lumen obstruction in case 1. Right lateral radiographs of the cervical area before surgery (a) and gross appearance of the removed stone (b).
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case_images: PMC10517870_01_CRIVEM2023-6478643.001.jpg
case_images: fig1
case_images: Radiographs showed a radiopaque FB (stone) occupying the proximal tracheal lumen (Figure 1(a)). The ventral neck was immediately shaved and disinfected, and an angular stone (Figure 1(b)) was removed by emergency tracheotomy.
case_images: Right lateral radiographs of the thoracic trachea before surgery (a) and after the suction of 100 mL of tracheal fluid (b) in case 1.
case_images: CRIVEM2023-6478643.002.jpg
case_images: PMC10517870_01_CRIVEM2023-6478643.002.jpg
case_images: fig2
case_images: Subsequent thoracic radiography revealed minimal abnormalities in the lung field, with a clearer intratracheal space than that before surgery (Figure 2).
case_images: PMC10517870_02
case_images: Radiographs of case 2 with a large foreign body (roundish stone) in the proximal trachea. Right lateral cervicothoracic view before surgery reveals increased opacity in the ventral lung field (a) and the stone causing near-complete lumen obstruction (b). Ventrodorsal views demonstrate changes in the right lung opacity before surgery (c), after the first extubation (d), after the positive pressure ventilation before the second extubation (e), and 12 days after surgery (f).
case_images: CRIVEM2023-6478643.003.jpg
case_images: PMC10517870_02_CRIVEM2023-6478643.003.jpg
case_images: fig3
case_images: Radiography revealed a radiopaque FB (a stone) in the proximal trachea (Figures 3(a) and 3(b)) and slightly increased opacity with alveolar pattern in the ventral area of the right middle and caudal lung lobes (Figures 3(a) and 3(c)). Radiographs obtained after extubation revealed worse right lung atelectasis compared with before surgery (Figure 3(d)). After the intravenous administration of propofol, reintubation and positive pressure ventilation with a positive end-expiratory pressure of 6 cm H2O were performed for approximately three minutes, resulting in a reduction in atelectasis (Figure 3(e)). Tokyo, Japan) was prescribed daily until suture removal 12 days later. The atelectasis had improved (Figure 3(f)), and the cat continued to recover uneventfully after that.
case_images: Intraoperative gross view of case 2. After the stone was removed from the tracheotomy site (a), 3-0 absorbable monofilament sutures were passed through the proximal and distal tracheal rings (b), and then tied in a simple interrupted pattern (c).
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case_images: PMC10517870_02_CRIVEM2023-6478643.004.jpg
case_images: fig4
case_images: The intratracheal stone was grasped with mosquito forceps and removed while the incision was dilated using the forceps (Figure 4(a)). The incision was closed with 3-0 glyconate monofilament suture (Monosyn ; B Braun, Rubi, Spain) passed through the proximal and distal tracheal rings (Figure 4(b)) in a simple interrupted suture pattern (Figure 4(c)).