Studies on Fat Necrosis in Cattle

II. Pathological Observation

Abstract

Diagnostic records on 208 indigenous Japanese Black cattle revealed that fat necrosis had been found in the adipose tissue around the colon in 82.7% of the cattle, that around the rectum in 42.3%, and that around the kidney in 27.9%. Actual examination of 33 cattle encountered at the abattoir revealed that fat necrosis had been found in the adipose tissue around the colon in 88.0%, that around the rectum in 27.3%, and that around the kidney in 30.3%
Grossly, necrotic masses of fat varied in size from the tip of the little finger to the head of the human adult. They were surrounded by a thick layer of connective tissue, causing stenosis or occlusion of the organ. Histologically, necrotic fat cells were enlarged a little, containing needle-like crystalline bodies arranged radially in the cytoplasm. They were surrounded by foam cells and syncytia of these cells, as well as giant cells against foreignbody.