( ii ) stenoses caused by cicatrization of endolaryngeal structures , complete atresia of the larynx with obliteration of the lumen ( a ) the cartilaginous skeleton of the larynx is still preserved , ( b ) cases in whom for various reasons the cartilaginous skeleton had been destroyed and the lumen of the larynx assumed the shape of a narrow fissure covered with mucosa ;
C0265756
atresia of
C0023078
larynx