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Myocardial haemorrhages
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Disseminated intravascular coagulopathy is a feature of acute cases of RHD and haemorrhages may be found in any part of the body. In this case, there were multifocal areas of haemorrhage in the myocardium, which were evident macroscopically and microscopically.
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HEART
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Subtle macroscopic signs of RHD
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Gross post-mortem signs are not always obvious in rabbits that died from RHD and this rabbit is an example. The liver is slightly enlarged and close inspection with a hand lens did show a mottled appearance. Histopathology showed characteristic hepatocellular necrosis and PCR testing confirmed the presence of RHDV2.
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Kidney
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The kidney is frequently affected by RHD. Histologically, glomerular thrombosis is a feature of the disease in many cases. Macroscopic changes are often masked by congestion, so the kidney is dark red, which was the case in this rabbit that died from RHD. Manipulation of the image (shadow and highlight) has shown that changes were present.
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KIDNEY
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RHD
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This picture shows the abdominal contents of an adult lionhead neutered male rabbit that died the day after a general anaesthetic for dentistry. The liver is swollen and pale and there is haemorrhagic fluid in the abdomen. Histopathology showed characteristic signs of RHD, including hepatocellular necrosis. PCR testing confirmed the presence of RHDV2.
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Rabbit Haemorrhagic Disease
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This half-grown female wild rabbit was found dead. There were no signs of external injury. Post-mortem examination revealed a full gastrointestinal tract - the rabbit had been eating up until an hour or two before death. The liver was enlarged and mottled, the lungs contained several haemorrhages in addition to a pale, necrotic area in the left caudal lung lobe. Histopathology showed the characteristic hepatocellular necrosis of RHD. The pale area in the lung was an aspergilloma and there was also evidence of hepatic coccidiosis. The case was confirmed as RHDV2 with PCR testing.
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Blood-stained fluid at nares
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Blood-stained fluid in the nares may be seen in rabbits that have died suddenly from RHD. A foamy blood-stained exudate in the trachea is a feature of the diseases and the exudate may extend to the nostrils
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RHD: macroscopic findings
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Macroscopic abnormalities are not always obvious in rabbits that have died from RHD. Histopathology reveals severe underlying pathology in the liver, often accompanied by other organs. RHD was confirmed in this rabbit.
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GROSS EXAMINATION