Pathological Changes in Hepatic Ascariasis of Swine

Kim, Sang Kyun; Lim, Chang Hyeong

Korean Journal of Veterinary Research 1970;10(1):33-38.

Sang Kyun Kim¹, Chang Hyeong Lim²

¹Seoul Municipal College of Agriculture
²College of Agriculture, Seoul National University

돈(豚)의 간회충증(肝蛔蟲症)에 관(關)한 병리학적(病理學的) 검색(檢索)

김상균¹, 임창형²

¹서울시립농업대학
²서울대학교 농과대학

Abstract

1. Hepatic ascariasis represented by milk spots on the liver surface was found in 475(31.7%) out of 1,500 pigs. 2. For histopathological studies, 170 cases were collected at random from the milk spotted liver From these cases ascaris larva was found in 14 cases(8.2%). 3. Grossly, the occurrence of milk spots was not confined to any particular lobes of the liver. The lesions, however, were more frequently found in the diaphragmatic surface than in the visceral surface. The extent of the spots was limited to the subcapsular region and the deeper tissue was not affected. 4. Histologically, hemorrhage and eosinophilic infiltration were observed in the area invaded by the larva. The increase of connective tissue followed by a form of chronic lymphocytic hepatitis was observed at the late stage of infection. There was numerous eosinophilic infiltration around the larva trapped in the liver tissue. Consequently, encapsulation of the larva was followed by organization and calcification.