title: Suspected actinobacillosis manifested by facial enlargement in a heifer.
abstract: Actinobacillosis was the suspected cause of severe, bilateral facial enlargement of 8 months' duration in a 2.5-year-old Holstein heifer. Serum protein electrophoresis revealed a polyclonal gammopathy. Necropsy findings indicated that facial swelling was caused by fibrosis between the skin and underlying bone. Lesions were characterized microscopically by scattered pyogranulomas containing eosinophilic, club-like colonies surrounding gram-negative bacterial rods. The lesion was compatible with diagnosis of actinobacillosis. It is unusual for severe bilateral facial enlargement to be associated with actinobacillosis.
authors: Department of Food Animal and Equine Medicine, College of Veterinary Medicine, North Carolina State University, Raleigh 27606-1499.
authors: K L
authors: KL
authors: Anderson
authors: R A
authors: RA
authors: Fairley
authors: D
authors: D
authors: Duncan
mesh_terms: D000187:Actinobacillosis / Q000175:diagnosis* / Q000473:pathology; D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000175:diagnosis* / Q000473:pathology; D003937:Diagnosis, Differential; D005145:Face / Q000473:pathology*; D005260:Female; D005355:Fibrosis