pathology of lung

- emphysema

- chronic bronchitis

- asthma

- bronchiectasis

 

emphysema

- gross pathology of emphysema

- histology of emphysema

gross pathology of emphysema

- bullous emphysematous with large apical and subpleural bullae

- lung with cystic spaces due to destruction of airsacs walls

- dilated airspaces with emphysema

- large bullae on surface of lungs

- centrilobular emphysema with focally appearing holes

**type of emphysema

  centriacinar panacinar paraseptal
 

- sparse empty spaces with pigmentations (anthracosis) corresponding enlarged airspaces

(centriacinar emphysema)

- airspaces are more or less evenly inflated throughout the secondary lobules

(panacinar emphysema)

- inflated subpleural airspaces with thin walls

(paraseptal emphysema)

 

 

histology of emphysema

- marked enlargement of air spaces, with destruction of alveolar speta but without fibrosis with presence of black anthracotic pigment

- nonemphysematous lung : right : peribronchiolar region

- interstitial emphysema : right: honeycomb is also seen.

**type of emphysema

  centriacinar panacinar paraseptal
 

- right : with focal fibrotic change

(centriacinar emphysema)

(panacinar emphysema)

with focal fibrotic change

(paraseptal emphysema)

chronic bronchitis

- histology of chronic bronchitis

history of chronic bronchitis

- the lumen of the bronchus is above with the marked thickening of the mucous gland layer (approximately twice-normal) and squamous metaplasia of lung epithelium.

asthma

- histology of asthma

histology of asthma

- sub-basement membrane fibrosis, eosinophilic inflammation, and smooth muscle hyperplasia

bronchiectasis

- gross pathology of bronchiectasis

gross pathology of bronchiectasis

- bronchiectasis with cystic fibrosis who underwent lung resection for transplantation : cut surface of lung shows markedly dilated bronchi, filled with purulent mucus, which are seen extending to subpleural regions