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Fig. 4 | Acta Veterinaria Scandinavica

Fig. 4

From: Anatomic, histopathologic, and echocardiographic features in a dog with an atypical pulmonary valve stenosis with a fibrous band of tissue and a patent ductus arteriosus

Fig. 4

Histopathologic findings of the pulmonary valve stained with Masson’s trichrome protocols. a Microscopic view at 40× magnification shows varying degrees of fibrosis in the pulmonary valve including granulomatous tissue (arrow head). b Microscopic view of 200× magnification shows mixed patterns of dense fibrotic tissue (white asterisk) and loose fibrotic tissue (black asterisk). c Microscopic view of 200× magnification shows fibrotic tissue that make an adhesion between right ventricular outflow track and pulmonary valve

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Acta Veterinaria Scandinavica

ISSN: 1751-0147