intubation, and thus, the patient was promptly referred to our hospital's department of otorhinolaryngology.
After evaluation, she was found to have undergone a septoplasty. Preoperative endoscopy and computed tomography (CT) revealed a nasal septum perforation measuring 14 mm vertically and 24 mm horizontally ( Figure 1 ). In addition, the otorhinolaryngologist reported that intubation through the left nasal cavity was likely to cause the endotracheal tube (ETT) to migrate through the perforation and into the right nasal cavity, which carried an increased risk of