Changes

Macroscopic pathological findings may include necrotic sinus cavities which can be filled with a mucopurulent debris. In more advanced cases the infection may track to the brain. Diagnosis is via isolation and culture of the causative agent.

Macroscopic pathological findings may include necrotic sinus cavities which can be filled with a mucopurulent debris. In more advanced cases the infection may track to the brain. Diagnosis is via isolation and culture of the causative agent.

===Pneumonia===

===Pneumonia===

In chinchilla this is commonly cause by bacterial infection, usually by similar species to the upper respiratory tract infection above. A species of fungus ''Histoplasma capsulatum'' has also bee associated with hay and pneumonia in chinchilla. Pneumonia is thought to be caused by housing in damp, cold environments.

In chinchilla this is commonly cause by bacterial infection, usually by similar species to the upper respiratory tract infection above. A species of fungus ''Histoplasma capsulatum'' has also bee associated with hay and pneumonia in chinchilla. Pneumonia is thought to be caused by housing in damp, cold environments. Clinical signs may include laboured breathing, coughing/sneezing and a mucopurulent discharge. In chinchillas pneumonia may also be accompanied by conjunctivitis, weight loss and the other more general signs discussed at the beginning of the disease section. Sudden death due to sepsis may occur.

Macroscopic lesions may include pneumonic lesions in the lung parenchyma and bronchi and general inflammation.

==Digestive System==

==Digestive System==