Hepatic arteriovenous malformation in a calf.

A case of hepatic arteriovenous malformation is described in a calf that presented with a marked increase in abdominal volume and died 12 h after birth. At necropsy, the calf had marked abdominal distension and haemoperitoneum. The left hepatic lobe was reduced in size and covered by slightly whitish and intensely vascularized membranous tissue.

Acute toxoplasmosis in pigs in Brazil caused by Toxoplasma gondii genotype Chinese 1.

This study reports the clinicopathological, immunohistochemical, and molecular findings from two cases of systemic toxoplasmosis in pigs showing apathy and dyspnea. In the post-mortem examination, severe diffuse necrotizing bronchointerstitial pneumonia with numerous intralesional tachyzoites of Toxoplasma gondii was observed. The lungs had not collapsed but were diffusely reddened, and the parenchyma showed friable whitish subpleural nodules with multifocal to coalescent distribution and diameters of 0.