RT Journal Article SR Electronic T1 Computed tomographic demonstration of choanal atresia. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 743 OP 745 VO 5 IS 6 A1 Tadmor, R A1 Ravid, M A1 Millet, D A1 Leventon, G YR 1984 UL http://www.ajnr.org/content/5/6/743.abstract AB During a 3-year period, nine girls and two boys (age range, 2 days-13 years) with congenital choanal atresia were evaluated by computed tomography (CT). Other associated congenital anomalies, primarily craniofacial anomalies, were present in six of the 11 patients. In six patients the atresia was bilateral and consisted of both bony and membranous components. Of the five patients with unilateral atresia, the lesions were on the right in three and on the left in two. CT demonstrated the atresia, choanal stenosis, septal deviation, and thickening of the vomer and palatine bone. The ease of CT examination and the high accuracy of the results make it the preferred imaging method for evaluating choanal atresia.