Chickens with virulent Newcastle disease.
Figure 1. Multifocal-to-coalescing fibrinonecrotizing stomatitis,
pharyngitis, and esophagitis.
Figure 2. Diffuse, bilateral cecal tonsil necrosis and hemorrhage. Notice
that while this lesion is very evident in the open cecum (top), it can also be observed
from the serosal surface of the cecum (bottom).