3.1 Gross lesions and Histopathology
Grossly, in most of the cases presented for necropsy, discrete grayish white nodules of various sizes were observed predominantly in liver and spleen and less commonly in heart, lungs, proventriculus and mesentery. Enlargement of liver and spleen were invariably present. None of the MD suspected carcasses showed enlargement or loss of striation in sciatic nerve. Histopathological examination showed extensive infiltration with pleomorphic cells and lymphocytes.