The characteristic intestinal lesion of Johne disease in cattle is:
Correct answer: D. Thickened corrugated ileal mucosa
- A. Thin smooth ileal mucosa
- B. Diffuse rectal hemorrhage
- C. Multiple gastric ulcers
- D. Thickened corrugated ileal mucosa
Explanation
Johne disease produces chronic granulomatous enteritis, especially in the ileum, causing marked mucosal thickening and a corrugated appearance. The lesions result from accumulation of infected macrophages in the intestinal wall.
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Covers the causes and mechanisms of disease, cellular injury, inflammation, healing, circulatory disturbances, neoplasia and disorders of major organs. It also includes gross and microscopic pathological changes, specimen interpretation and the distinction between aetiology, pathogenesis, clinical signs and lesions.
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