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Unique Isospora -associated histologic lesions in white-rumped shama ( Copsychus malabaricus )
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Twenty-one white-rumped shamas (19 necropsied, 2 biopsied) ( Copsychus malabaricus) housed at the San Diego Zoo between 1992 and 2020 were diagnosed with Isospora infection based on evaluation of histologic sections. Review of these cases revealed a consistent histologic lesion characterized by nodular aggregates of atypical epithelioid macrophages containing few intracytoplasmic protozoa, with or without lymphocytic infiltrates. Of the 19 necropsied cases, 16 (84%) had systemic lesions variably affecting the liver, spleen, gastrointestinal tract, lung, pancreas, connective tissues, or bone marrow, while all 21 diagnosed cases had skin involvement. The findings suggest that white-rumped shamas have a unique inflammatory response to isosporosis with a predilection for the skin. Skin may be a diagnostically sensitive sampling site for histologic diagnosis of Isospora in this species.
SAGE Publications
Title: Unique
Isospora
-associated histologic lesions in white-rumped shama (
Copsychus malabaricus
)
Description:
Twenty-one white-rumped shamas (19 necropsied, 2 biopsied) ( Copsychus malabaricus) housed at the San Diego Zoo between 1992 and 2020 were diagnosed with Isospora infection based on evaluation of histologic sections.
Review of these cases revealed a consistent histologic lesion characterized by nodular aggregates of atypical epithelioid macrophages containing few intracytoplasmic protozoa, with or without lymphocytic infiltrates.
Of the 19 necropsied cases, 16 (84%) had systemic lesions variably affecting the liver, spleen, gastrointestinal tract, lung, pancreas, connective tissues, or bone marrow, while all 21 diagnosed cases had skin involvement.
The findings suggest that white-rumped shamas have a unique inflammatory response to isosporosis with a predilection for the skin.
Skin may be a diagnostically sensitive sampling site for histologic diagnosis of Isospora in this species.
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