PMC4837133_01
Computed tomography of the sinuses. Left, Axial section, showing the region of patent choanae without atresia signals. Right, Coronal section, showing narrowing of pyriform aperture. Right nostril size is 0.32 cm and left nostril size is 0.35 cm.
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F1
A computed tomography (CT) of the nasal cavity revealed no choanal atresia but a pyriform aperture of 0.67 cm and an obstructive deviated nasal septum (Fig. 1).
PMC4837133_02
Final appearance in the immediate postoperative period, with the tracheal tube no. 3 set in both nostrils to keep airways and allow cleaning.
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F2
Two pieces of 3.0 endotracheal tubes were used as stents bilaterally to allow suction and irrigation, and to ensure patency (Fig. 2).
Computed tomography of the sinuses. Postoperative aspect with enlargement of pyriform aperture.
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F3
The patient was followed up for a year, and nasal cavities remained patent (Fig. 3), with good visualization through a nasofibroscope.
PMC4837133_03
Computed tomography of sinuses. Left, Axial section, showing solitary median maxillary central incisor (arrow). Right, Coronal section, showing 2.8 mm pyriform aperture size.
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F4
A CT revealed a patent choana but a narrowed pyriform aperture of approximately 2.8 mm associated with a solitary median maxillary central incisor (Figs. 4 and 5).
Computed tomography 3-D reconstruction, showing solitary median maxillary central incisor (arrow) and pyriform aperture stenosis.
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F5
A CT revealed a patent choana but a narrowed pyriform aperture of approximately 2.8 mm associated with a solitary median maxillary central incisor (Figs. 4 and 5).
Sublabial approach.
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F6
After a diagnosis of CNPAS was confirmed, the child underwent surgical correction through a sublabial approach (Figs. 6 and 7) and stenting with adapted endotracheal tubes.
Intraoperative, showing postcorrection aspect in the right side.
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F7
After a diagnosis of CNPAS was confirmed, the child underwent surgical correction through a sublabial approach (Figs. 6 and 7) and stenting with adapted endotracheal tubes.