Which organism tends to cause chronic liver conditions when infected in felines?

Platynosomum fastosum is known for its association with chronic liver conditions in cats. This organism, commonly referred to as the lizard poisoning fluke, primarily affects the liver, gallbladder, and bile ducts of felines. Infection typically occurs when cats ingest infected lizards, which serve as intermediate hosts.

Once within the host, Platynosomum fastosum can cause significant liver damage and may lead to cholangitis, cholestasis, and jaundice, resulting in chronic liver disease. The clinical manifestations can include vomiting, weight loss, and potentially severe liver dysfunction, often necessitating veterinary intervention.

Unlike the other organisms listed, which may cause a variety of issues but are not primarily associated with chronic liver conditions in cats, Platynosomum fastosum has a clear and direct link to liver pathology. This specificity of the fluke's effects on feline health underscores the importance of recognizing and addressing this particular parasite in veterinary practice.