gms | German Medical Science

79th Annual Meeting of the German Society of Oto-Rhino-Laryngology, Head and Neck Surgery

German Society of Oto-Rhino-Laryngology, Head and Neck Surgery

30.04. - 04.05.2008, Bonn

Early diagnostic and repair of choanal atresia in childhood with low-dose CT and transnasal endoscopic approach – ten cases

Meeting Abstract

  • corresponding author Karen Dzhambazov - HNO/MU Plovdiv, Plovdiv, Bulgarien
  • Nikoleta Traykova - Radiologie, MU Plovdiv, Plovdiv, Bulgarien
  • Dimitar Pazardzhikliev - HNO Klinik, MU Plovdiv, Plovdiv, Bulgarien

Deutsche Gesellschaft für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie. 79. Jahresversammlung der Deutschen Gesellschaft für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie. Bonn, 30.04.-04.05.2008. Düsseldorf: German Medical Science GMS Publishing House; 2008. Doc08hnod423

The electronic version of this article is the complete one and can be found online at:

Published: April 22, 2008

© 2008 Dzhambazov et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( You are free: to Share – to copy, distribute and transmit the work, provided the original author and source are credited.



Introduction: Choanal atresia is estimated to be one in 5000–8000 live births.

CT and endoscopy provides the presence of choanal atresia in children and give detailed anatomic preoperative information.

Material and Methods: We report ten cases of choanal atresia in children – 4 bilateral, 6 unilateral, examined using Siemens Somatom Emotion CT in axial scanning position. To reduce the exposition parameters without lost of image quality, we used high resolution low-dose/60 mAs/technique. Transnasal endoscopic approach with traditional stenting was used for surgical repair of the malformation.

Results: The Low dose HRCT showed clearly the type of obstruction: 1 bilateral membranous in newborn, 3 bilateral bony-membranous in newborn, 3 unilateral bony in three and five years old children, 1 unilateral bony-membranous in five years old child and 2 unilateral bony in four and three years old children. Except 1 newborn, who died 2 months postoperatively because of acute bronchopneumony, the endonasal endoscopic surgical repair was successful and normal nasal breathing was restored in all of the cases.

Conclusions: Advantages of the Low Dose CT include decreased radiation exposure to the patient, extended CT tube life and reduced expense.In our study, we reduced the exposure factors without image compromise. The endonasal endoscopic surgical repair is a minimal invasive and succesfull method of first choice to restore the normal breathing through the nose.