개 capillaria hepatica 感染 例의 病理學的 觀察

Pathological findings of capillaria hepatica infection in dogs

Five dogs were submitted for diagnosis in Pathology Division of the National Veterinary Research Institute. These dogs showed emaciation and rough hair coat. At necropsy, numerous sharply demarcated yellowish white spots or streaks were scattered in the liver parenchyma under the capsule. Histopathological findings were seen with typical granuloma in the liver parenchyma. Nematodes and their ova were surrounded by macrophages, epithelioid cells, foreign body giant cells, eosinophiles and lymphocytes, and these granulomatous nodules were encapsulated with fibrous connective tissues. The ova were lemon shaped, bipolar operculate and enveloped by the thick bilayered walls. The transparent outer wall had a radially striated appearance, whereas the inner wall was more dense and opaque. The mean dimension of ova were 53.5㎛ long by 28㎛ wide. These results were concluded that five dogs were infected with Capillaria hepatica.