Species: Ruminant, Calf
Specimen:
Lung
Shown:
Fibrinous bronchopneumonia with mixed Histophilus somni and Pasteurella multocida infection
Pathology:
Bronchopneumonia
General Information:
- Most commonly caused by bacterial or fungal infection
- Most commonly opportunistic infections, e.g. secondary to aspiration or stress
Gross Appearance:
Irregular consolidation in the cranioventral areas, with a firm texture and dark-red or gray-pink colour
Hallmark:
Exudative lesions originating at the bronchiolar-alveolar junction
References:
Jubb, Kennedy and Palmer's Pathology of Domestic Animals
Etiology:
Histophilus somni
Clinical Manifestations:
Arthritis, pleuritis, pericarditis, myocarditis and meningoencephalitis
Pneumonia: Cranioventral fibrinous bronchopneumonia with foci of coagulative necrosis
Meningoencephalitis: Multiple foci of hemorrhage and necrosis
Hallmark:
Vasculitis with secondary thrombosis
References:
Jubb, Kennedy and Palmer's Pathology of Domestic Animals