An adjacent portion of glandular stomach is not ulcerated. The necrotic squamous epithelium has sloughed to expose subepithelial connective tissue and muscle. A thin layer of proteinaceous exudate and inflammatory cells is present over the ulcer. Intestine A25 Acute Salmonella Enteritis - There is extensive mucosal necrosis and infiltration by mainly mononuclear cells in the section of intestine from a calf infected with Salmonella dublin. From a 3 week old calf with 2 days duration severe diarrhoea.
Section is of the distal small intestine with loss of normal villous architecture.
The mucosa has a flattened appearance and is infiltrated with inflammatory cells. Note the basophilic coccobacilli on the surface of epithelial cells. An untypable strain of E.coli was recovered from caecal contents. Pathological examination enabled a diagnosis to be made int his calf. No other potential pathogens were recovered.