Atresia,Choanal

《英文msh词典》Atresia,Choanal
[同义词] Atresia,Choanal
[主题词] Choanal Atresia
[中文释义] 闭锁,鼻后孔
[英文释义] Congenital bony or membranous occlusion of one or both choanae,due to failure of the embryonic bucconasal membrane to rupture.