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In a 1 month old lamb carcass granulmatous like lesions were appreciated in the liver and the muscles of the heart and diaphragm.

Granulomatous lesion in the liver parenchyma.

Granulomatous lesion in the liver parenchyma.

Lesions in the myocardium.

Lesions in the myocardium.

Lesion in the diaphragm musculature.

Lesion in the diaphragm musculature.

What is your diagnosis? (22)

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  Histopathology revealed granulomatous lesions both in the liver and in the muscular tissue with a significant proportion of eosinophilic polymorphonuclear leucocytes, this lesion is compatible with a parasitic hepatitis and myositis, most likely due to Cysticercus ovis. This is the larval stage of Taenia ovis. The muscular location of the lesions led to rule out these lesions were caused by C. tenuicollis.     Another presentation of these parasite can be seen here.
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Question 1
A
Hepatitis and myositis due to Cysticercus ovis
B
Hepatitis and myositis due to Cysticercus tenuicollis
C
Hepatitis and myositis due to Cysticercus bovis
D
Hepatitis and myositis due to Mycobacterium caprae
E
Hepatitis and myositis due to Corynebacterium pseudotuberculosis
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