Individual biliary epithelial cells often contained a single, clear, cytoplasmic vacuole. Variably-sized foci of coagulative to caseous necrosis were present, involving both bile ducts and hepatic parenchyma. Foci of necrosis were surrounded peripherally by infiltrates of epitheloid macrophages, many multinucleated giant cells, and scattered heterophils. Occasional ascarid ova also were present. Bile duct hyperplasia, fibrosis, and inflammatory cell infiltrates are present.
Ascarid ovum has a thick, smooth cell wall and is surrounded by detritus.
Adult ascarids were present but rare. Ascarid larvae are present in the hepatic parenchyma surrounded by macrophages, giant cells, detritus, and fibroplasia. Parasite, parrot liver, Modified acid-fast stain. Neither bacteria nor fungal organisms were identified with Giemsa, Lillie Twort, modified acid-fast, or PAS staining. Intestinal hemorrhage and pulmonary congestion also were observed.