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Volume 27, Number 3—March 2021
Research Letter

Genomic and Pathologic Findings for Prototheca cutis Infection in Cat

Grazieli Maboni1Comments to Author , Jessica A. Elbert1, Justin M. Stilwell, and Susan Sanchez
Author affiliations: University of Guelph, Guelph, Ontario, Canada (G. Maboni); Athens Veterinary Diagnostic Laboratory, Athens, Georgia, USA (G. Maboni, S. Sanchez); University of Georgia, Athens (J.A. Elbert, J.M. Stilwell)

Main Article

Figure

Histologic lesions associated with protothecosis caused by Prototheca cutis in a cat. A) Subgross cross-section of the nasal turbinates showing marked expansion of the nasal epithelium and overlying subcutaneous tissue. B) Epithelioid macrophages (arrows) with abundant, intracytoplasmic, gray material multifocally dissecting through subdermal collagen and musculature. Hematoxylin and eosin (H&E) stain; scale bar indicates 50 μm. C) Submucosal glands (arrows), markedly displaced by myriad macrophages, neutrophils, lymphocytes, plasma cells, and algal sporangia. H&E stain; scale bar indicates 50 μm. D) Algal sporangia (black arrows), which sometimes endosporulate (white arrows), producing up to 8 endospores (inset). H&E stain; scale bar indicates 10 μm and does not apply to inset.

Figure. Histologic lesions associated with protothecosis caused by Prototheca cutis in a cat. A) Subgross cross-section of the nasal turbinates showing marked expansion of the nasal epithelium and overlying subcutaneous tissue. B) Epithelioid macrophages (arrows) with abundant, intracytoplasmic, gray material multifocally dissecting through subdermal collagen and musculature. Hematoxylin and eosin (H&E) stain; scale bar indicates 50 μm. C) Submucosal glands (arrows), markedly displaced by myriad macrophages, neutrophils, lymphocytes, plasma cells, and algal sporangia. H&E stain; scale bar indicates 50 μm. D) Algal sporangia (black arrows), which sometimes endosporulate (white arrows), producing up to 8 endospores (inset). H&E stain; scale bar indicates 10 μm and does not apply to inset.

Main Article

1These authors contributed equally to this article.

Page created: December 31, 2020
Page updated: February 22, 2021
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