Fibrinous pericarditis secondary to bacterial infection in a cat

Figures

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  Fig. 1.. Lateral (A) and dorsoventral radiographs (B) showing the enlarged, globular cardiac silhouette with pleural effusion and dorsal deviation of the trachea. These radiographs were acqured after the removal of the pleural effusion.

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  Fig. 2.. Echocardiographic examination demonstrates a thickened pericardium (arrowheads) with a hypoechoic pleural effusion (arrow). LA, left atrium; LV, left ventricle; RA, right atrium; RV, right ventricle.

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  Fig. 3.. Gross examination reveals a large amount of opaque, tan ascites and pleural effusion and markedly thickened pericardium. Bar=2 cm.

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  Fig. 4.. The epicardium is covered with an approximately 0.5- to 1.0-cm, pale-yellow and thick layer of fibrin. Bar=1 cm.

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  Fig. 5.. Histopathological examination of the myocardium (M), thick layer of the epicardium (E), granulation tissue (G) and severe exudation of fibrin (F) with neutrophil infiltration in the case. Bar=200 µm. Hematoxylin-eosin stain.

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  Fig. 6.. Bacterial colony observed in the fibrinous layer attached to the epicardium. Small cocci are ambiguously observed. Hematoxylin-eosin stain (A). Same bacterial colony stained with Warthin-Starry stain. Cocci are distinctly observed (B). Same bacterial colony stained with Gram’s stain. The cocci are negatively stained (C). Bar=10 µm.