Above, gross lesions corresponding to contagious echtyma
on the lips of a sheep.
Below, on the left, a microscopy image of the lesions can be seen, showing
the irregularity of the epithelial surface, which exhibits ballooning
degeneration as well as invasion of the mucosal lamina propria
by irregular columns of epithelium (H&E, 40x). On the right, note
the epithelial hyperplasia forming columns that plunge deep into the oral
mucosal lamina propria (H&E, 100x).
Copyright © 2001 by MC
Peleteiro. M Pinho & JS Orvalho
design by R Noiva