Lesions on turkey liver due to histomoniasis and secondary bacterial infection. Characteristic multifocal white pinpoint lesions can be seen around multiple dark, slightly depressed areas on a generally enlarged liver. Without secondary bacterial infection, Histomonas infections are only mildly pathogenic. In turkey flocks not on prophylactic antibiotics, histomoniasis mortality rates may reach 100%.
Lesions of trichomoniasis, commonly referred to as 'canker' in pigeons or 'frounce' in raptors, consisting of diffuse multifocal areas of caseous necrosis in the esophagus and oropharynx of a dove. Lesions of trichomoniasis are usually found in the mouth, pharynx, esophagus, and crop, and are rarely seen posterior to the proventriculus.