Fatal hepatic trematodiasis in cockatoos due to Platynosomum proxillicens.

Severe hepatic trematodiasis due to Platynosomum proxillicens was diagnosed as the cause of death in two sulfur-crested cockatoos (Cacatua sulfurea). Gross pathologic alterations included hepatomegaly in one bird and hepatic and generalized cyanosis in the other. Microscopic changes included multifocal hepatic necrosis, dilated fibrous bile ducts containing trematode, parasites, bile duct hyperplasia, and hepatic inflammation.