[Post-mortem diagnosis of leptospirosis in two dogs].

Leptospirosis was diagnosed post-mortem in a 2-year-old male Dogo Argentino and a 7-week-old male Foxhound puppy. The two cases were unrelated. Clinical symptoms were mainly confined to the gastro-intestinal tract. Pathological lesions were suggestive of acute leptospirosis. Leptospires infection was confirmed by serological (indirect IgM/Ig6 ELISA and MAT) and immunohistochemical techniques.