Changes

*Causative agent [[Paramyxoviridae|equine morbillivirus]]

*Causative agent [[Paramyxoviridae|equine morbillivirus]]

*Oedematous lungs with distention of [[Pleural cavity and membranes - inflammatory|pleura]]

*Oedematous lungs with distention of [[Pleural Cavity & Membranes Inflammatory - Pathology|pleura]]

*Micro: diffuse [[Lungs - circulatory#Pulmonary oedema|alveolar oedema]], syncytial cells

*Micro: diffuse [[Lungs - circulatory#Pulmonary oedema|alveolar oedema]], syncytial cells

*Grossly:

*Grossly:

**[[Trachea - inflammatory|Tracheo]][[Bronchi and bronchioles - inflammatory#Infectious causes of bronchitis or bronchiolitis|bronchitis]], airway obstruction -> [[Lungs - ventilation#Atelectasis (Collapse)|atelectasis]]

**[[Trachea - inflammatory|Tracheo]][[Bronchi and bronchioles - inflammatory#Infectious causes of bronchitis or bronchiolitis|bronchitis]], airway obstruction -> [[Lungs - ventilation#Atelectasis (Collapse)|atelectasis]]

**[[Pleural cavity and membranes - inflammatory|Pleura]] normal or covered with serous or serofibrinous exudate

**[[Pleural Cavity & Membranes Inflammatory - Pathology|Pleura]] normal or covered with serous or serofibrinous exudate

**[[Pleural cavity and membranes - inflammatory|Pleural cavity]] filled with excess fluid

**[[Pleural Cavity & Membranes Inflammatory - Pathology|Pleural cavity]] filled with excess fluid

**Lung lesions  

**Lung lesions  

***Clear demarcation of lesions in cranial and middle lobes  

***Clear demarcation of lesions in cranial and middle lobes