Congenital Choanal Atresia

  • Pedro Saraiva Teiga
  • Kishore SanduEmail author
  • Lluís Nisa


Congenital choanal atresia (CA) is a condition characterized by a non-permeable posterior nasal aperture, also known as choana (from Greek funnel). For incomplete forms, the term choanal stenosis should be used. For the sake of simplicity, only CA is used in the present text. The bony frame of the choana is formed by the sphenoid body cranially, the horizontal portion of the palatal bone caudally, the vomer medially, and the medial pterygoid lamina laterally.


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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Pedro Saraiva Teiga
    • 1
  • Kishore Sandu
    • 1
    Email author
  • Lluís Nisa
    • 2
  1. 1.Department of Otorhinolaryngology, Head and Neck SurgeryLausanne University Hospital, CHUVLausanneSwitzerland
  2. 2.Department of Otorhinolaryngology, Head and Neck SurgeryInselspital, Bern University Hospital, University of BernBernSwitzerland

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