Figure Legends
Figure 1. The patient’s facial appearance. Bilateral port-wine stains and marked swelling of the upper lip.
Figure 2. Computed tomography image of the patient. The patient’s nasal septal curvature and remarkable bony thickening of the inferior nasal dorsum on either side.
Figure 3. Mask ventilation. (A) A face mask (large size) was used with an oral airway. (B) A full-face mask (extra-large size) was used.
Figure 4. Pilot balloon of the endotracheal tube (ETT). The sterilized echo probe cover was placed over the ETT and held with a rubber band at the base of the pilot balloon (white arrow).
Figure 5. Intraoral and extraoral views of the SMI. (A) Intraoral view of the SMI. (B) Extraoral view of the SMI and the wings on the ETT connector (white arrow).