Nasopharyngeal stenosis (NPS) is an uncommon but potentially life-threatening condition in cats, capable of causing complete upper airway obstruction in severe cases. Carbon dioxide (CO₂) laser staphylectomy provides precise tissue ablation with minimal collateral thermal injury; however, restenosis could occur when used as a sole treatment modality. Balloon dilation can temporarily restore luminal patency, yet recurrence rates remain high when performed alone. This report describes an 8-month-old Korean Shorthair cat with complete nasopharyngeal stenosis that underwent CO₂ laser ablation as an initial intervention, followed by rapid restenosis within three days. A second procedure combining CO₂ laser ablation with endoscopic balloon dilation achieved short-term maintenance of nasopharyngeal patency. These findings suggest that, in cases of complete stenosis with a high risk of recurrence, a multimodal approach may be more effective than single-modality treatment.

• Tae-seok Noh(Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea)
• Geon-Ung Byun(Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea)
• Jun-ho Koo(Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea)
• Jong-mu An(Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea)
• Sang-won Yoo(Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea)
• Young-gyu Lee(Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea)
• Sin-Yeoung Park(Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea)
• Yoon-Ho Roh(Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea)
• Chang-Hwan Moon(Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea)
• Dongbin Lee(Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea) Corresponding author