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16/04/2012 | Abdominal cavity (porcine)
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Widespread abdominal nodular lesions in a 6 months old pig

The bulk of the nodules measured between 1 and 5 cm in diamater but some of them where bigger, up to 15 cm. Meat inspectors suspected of a lymphoma.

Histopathology revealed a neoplastic proliferation of rounded to polyhedric cells with a high degree of anaplasia (undifferentiation) which were hard to identify morphologically as a pariticular cell type. No immunohistochemical markers indicative of a lymphoid population were found. Therefore, even it was not conclusive the most probable diagnostic was a mesotelioma of the abdominal serosa.

In a case like this one it is important to include mycobacteria in the differential diagnosis.

Multiple lesions in the splenic surface coalesce into a large mass. The intestinal serosa was also involved.

Multiple lesions in the splenic surface coalesce into a large mass. The intestinal serosa was also involved.

Superficial hepatic lesions.

Superficial hepatic lesions.

Involvement of the kidneys, mesenterium and parietal peritoneum.

Involvement of the kidneys, mesenterium and parietal peritoneum.



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