03-7. Lung, ox. (MHE | -100X)
Multifocally, there is fibrosis of walls of the larger pulmonary veins (arrows).
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 Masson-Trichrome demonstrates the amount of collagen within the wall of the inflamed arteriole. ');)
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, and there is marked edema and emphysema affecting the interlobular septa and pleura (green arrows).');)
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