478 



THE RESPIRATORY SYSTEM. 



Acute Pseudo-membranous Bronchitis Croupous Bronchitis may occur 

 with croupous laryngitis, as a lesion of diphtheria, with lobar pneumo- 



FIG. 263. CHRONIC BRONCHITIS WITH MODKRATE BROXCHIECTASIA. 



This transverse section of a portion of the wall of a dilated bronchus shows atrophy of the epithelium ; 

 fibrous hyperplasia ot the submucosa with the formation of longitudinal ridges on the interior of the tube 

 (cut across in this section); thickening of the wall of the bronchus and atrophy of the mucous glands. 



nia, and sometimes without these associations. The bronchi are lined or 

 filled with a mass of fibrin, pus, and desquamated epithelium. Fibrin 

 and pus may also be found beneath the epithelium and infiltrated in the 

 stroma. 



Chronic Fibrinous Bronchitis is attended with the formation in one or 

 more bronchi of masses of fibrin which are expectorated by the patient 



FIG. 263. CHRONIC FIBRINOUS BRONCHITIS. 



Fibrlnous casts of the bronchi, similar to those shown in the photograph, were coughed up at irregular 

 intervals for several years. 



in the form of branching casts of the bronchi (Fig. 263). After death 

 the bronchi are said to be but little altered from the normal. ' 



1 For a resume and bibliography see Bettrnani 

 1902, p. 304. 



Am. Jour. Med. Sci., vol. cxxiii., 



