04/03/2015
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Equine
1
Granulomatous myositis and steatitis in a mare
Histopathological examination evidenced, in both tissues, granulomatous myositis and setatitis lesions with abundant eosinophilic polymorphonuclear leukocytes. This type of lesion is compatible with a parasitic etiology.
In fact, some muscle fibers were spotted with Sarcocystis spp. cysts within their cytoplasm, but those were not associated with the lesions.
PAS, Ziehl Neelsen, Grocott and Gram staining failed to demonstrate the presence of other possible agents such as fungi, bacteria, mycobacteria or other parasites.
1 comment(s)
Parasitic aetiology, not Sarcocystis. Granulomas contain degenerate parasites no longer recognizable. Maybe Taenia sp or aberrant migrating nematode larvae.