Pathological study on abdominal fat necrosis of adult cattle sampled from slaughterhouse in Korea

Lee, Jeong-chi; Kim, Jong-sam; Lee, Chung-gil; Kim, Snag-ki; Cho, Kyoung-oh; Kang, Mun-il; Jeong, Cheol; Park, Sung-hee; Suh, Guk-Hyun; Lee, Chai-yong

Korean Journal of Veterinary Research 2005;45(4):593-599.

Jeong-chi Lee¹, Jong-sam Kim², Chung-gil Lee², Snag-ki Kim², Kyoung-oh Cho², Mun-il Kang², Cheol Jeong², Sung-hee Park², Guk-Hyun Suh³, Chai-yong Lee²

¹Department of Veterinary Nurse and Pets Science, Seojeong College
²College of Veterinary Medicine, Chonnam National University
³National Livestock Research Institute, R.D.A.

국내 도축우의 복강에서 관찰된 지방괴사의 병리학적 연구

이정치¹, 김종삼², 이정길², 김상기², 조경오², 강문일², 정철², 박성희², 서국현³, 이채용²

¹서정대학 애완동물과
²전남대학교 수의과대학
³농촌진흥청 축산연구소

Abstract

An abattoir study on the abdominal fat necrosis in adult cattle was performed pathologically. Grossly, masses of fat necrosis were leekgreen in colour, lobulated on the cut surface, and saponificated in the texture. These necrotic adipose tissues infiltrated usually into neighboring parenchymal organs including intestines and pancreas, leading to fibrosis or atrophy of them. Histopathologically, necrotic fat cells contained acidophilic, opaque, amorphous substance or basophilic fibrillar or granular minerals in their cytoplasms. The lesions of fat necrosis were divided by fibroconnective tissue. With increase of the severity, necrotic fat cells fused each other and then formed fat cysts. In this severe lesion, necrotic fat cells were partialy or completely replaced by macrophages. Multinucleated giant cells were scattered in this lesion. Interestingly, small artery in the lesion of fat necrosis revealed severe thickening of internal elastic membrane. Severe fibrosis was observed in or between the outer longitudinal and inner circular muscular externas causing segregation, degeneration and necrosis of muscle fibers. The nerve cells of Auerbach's and Meissner's plexuses surrounded by fibrosis were degenerated or necrotic. In addition, necrotic fat cells infiltrated into the pancreas, resulting in pancreas atrophy. From these results, it is speculated that fat necrosis might compromise intestinal movement due to necrosis of muscular externa and ganglion cells of Auerbach's and Meissner's plexuses.

Key Words: cattle, compromise, fat necrosis, intestinal movement