Eosinophilic granuloma with Splendore-Hoeppli material caused by Mannheimia granulomatis in a calf.

ABSTRACT: A large subcutaneous mass, formed on the left lower jaw of a 4-month-old Japanese Black male calf, was partially excised for histological and bacteriological examinations. Antibiotic treatment resulted in a good prognosis. Bacteria isolated from the excised material were characterized by weak hemolysis and positive reactions for catalase and oxidase, and were 99% identical to Mannheimia granulomatis strains. The presence of the leukotoxin gene product was demonstrated by polymerase chain reaction amplification. Histological examination showed that the excised material was composed of dense fibrous connective tissue with sparsely distributed eosinophilic granulomas or abscesses. These foci frequently contained Splendore-Hoeppli material with rod-shaped Gram-negative bacteria. Except for the

SUBMITTER: Kawashima Y 

PROVIDER: S-EPMC4937147 | biostudies-literature | 2016 Jul

REPOSITORIES: biostudies-literature