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Photomicrographs of Cooper’s hawk soft palate and lung

Detailed Description

(A) Soft palate of a Cooper’s hawk (Accipiter cooperii). The submucosa is expanded by a myriad of epithelioid macrophages (arrow) surrounding multinucleated giant cells centered on a necrotic center (asterisk). H&E stain. Insert: Intrahistiocytic and extracellular acid-fast bacilli. Multinucleated giant cells are prominent between extracellular bacteria within necrotic center and epithelioid macrophages. Ziehl-Neelson stain. (B) Lung from a Cooper’s hawk. Granulomas (asterisk) efface normal architecture and compress surrounding parenchyma. H&E stain. Insert: Intrahistiocytic, acid-fast bacilli. Ziehl-Neelson stain.


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