Brown O E, Pownell P, Manning S C
Department of Otorhinolaryngology, University of Texas Southwestern Medical Center, Dallas 75235-9035, USA.
Laryngoscope. 1996 Jan;106(1 Pt 1):97-101. doi: 10.1097/00005537-199601000-00019.
The anatomic classification of choanal atresia is commonly quoted as 90% bony and 10% membranous. This incidence is from a review by Fraser in 1910 of 115 cases, "many of which were insufficiently described." We have reviewed 47 computed tomography scans of choanal atresia from the literature and 16 from our clinical experience, and classified the anatomy as bony, mixed bony-membranous, or pure membranous. Our results reveal a combined incidence of 18 (29%) pure bony, 45 (71%) mixed bony-membranous, and no pure membranous atresia. We propose a new classification of choanal atresia to include bony, mixed, and membranous to accurately reflect the anatomic abnormalities. Our series of 11 patients undergoing transnasal microsurgical repair, a critical review of the literature, and the implications of the anatomic classification on the choice of surgical procedure are presented.
后鼻孔闭锁的解剖学分类通常认为是90%为骨性闭锁，10%为膜性闭锁。这一发病率来自弗雷泽在1910年对115例病例的回顾，“其中许多病例描述不充分”。我们回顾了文献中47例后鼻孔闭锁的计算机断层扫描以及16例来自我们临床经验的病例，并将其解剖结构分类为骨性、骨膜混合性或纯膜性。我们的结果显示，纯骨性闭锁的综合发病率为18例（29%），骨膜混合性闭锁为45例（71%），无纯膜性闭锁病例。我们提出了一种新的后鼻孔闭锁分类方法，包括骨性、混合性和膜性，以准确反映解剖学异常情况。本文介绍了我们对11例接受经鼻显微手术修复患者的系列研究、对文献的批判性回顾以及解剖学分类对手术方式选择的影响。
