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In a a cross breed, 6 months old, pig carcass granulomatous esiosn of miliary distribution were observed in the liver and in the pulmonary parenchyma. The lymph nodes presented no lesions.

Granulomatous lesions of  miliary distribution in the liver.

Granulomatous lesions of miliary distribution in the liver.

Granulomatous lung lesions (arrows) were observed.

Granulomatous lung lesions (arrows) were observed.

What is your diagnosis? (21)

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The histopathological lesions showed multifocal granulomatous hepatitis with abundant eosinophilic polymorphonucelar leukocytes therefore indicative of a parasitic etiology. Most likely due to Ascaris suum nematodes, the typical lesions of these parasites is known as liver with milk spots.  

Among the differential diagnosis on this kind of lesions one should also consider: Mycobacteriosis and lymphoma.

 
Your answers are highlighted below.
Question 1
A
T cell lymphoma
B
Tuberculosis (M. caprae)
C
Parasitic granulomas (A.suum)
D
Actinomyces spp.
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