v.15, n.1, 11
Diagnostic Exercise from The Latin Comparative Pathology Group
Oleander (Nerium oleander) intoxication in a bison
Nicolás Streitenberger, Javier Asin, Mauricio A. Navarro, Robert H. Poppenga & Francisco A. Uzal
Clinical History:
Two 18-month-old female bison and a heifer died suddenly in the same ranch. The three animals were submitted for postmortem examination and diagnostic workup. The changes of one of the bison are presented here.
Necropsy Findings:
The carcass was in fair nutritional condition, with small amount of fat reserves, but still well fleshed, and in mild state of post-mortem decomposition. There was a small amount of clotted dark-red blood in the nostrils and anus. The heart presented extensive sub-endocardial hemorrhages in all four chambers. These lesions were most pronounced in both ventricles where they extended deep into the underlying myocardium (Fig. 1 and Fig. 2). The mucosa of the abomasum was diffusely and mildly congested, and the mucosa of the small and large intestine was diffusely and severely congested (Fig. 3). There was a moderate amount of red fluid in the lumen of the small intestine, cecum, and colon. Both lungs had a few, small, well delineated, deep, firm, multifocal dark-red areas in all pulmonary lobes, but lung tissue samples floated when placed into formalin.
Follow-up questions:
- Microscopic description
- Morphologic diagnosis
- Most likely etiology
DOI: 10.24070/bjvp.1983-0246.v15i1p65-68
