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Case 1:
History:
A 6 month old Thoroughbred foal died suddenly overnight,
without any evidence of external trauma, misadventure or an agonal struggle.
Two yearlings from the same property had died suddenly in preceding months
and necropsy examination of these had revealed multiple large foci of
acute, subacute and chronic myocardial necrosis.
Post Mortem Findings:
Excess serous fluid was present in the thoracic and
peritoneal cavities and there was mild subcutaneous oedema of the ventral
trunk and distal limbs. There was severe diffuse pulmonary oedema and
congestion, with copious blood-stained foam in the trachea and bronchi.
Multiple, irregularly shaped areas of the right and left ventricular myocardium
were pale. Mild patchy pallor was also noted in the skeletal muscles of
the proximal hindlimbs. The liver was diffusely congested, with an exaggerated
lobular pattern.
This is a low power view of the liver. Note the distended
central veins which are engorged with blood.
The sinusoids are also distended with blood,
most severely in the centrilobular zones
of each hepatic lobule.
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