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==Diagnosis==
==Diagnosis==
===Clinical Signs===
===Clinical Signs===
History of chronic waxing and waning low-grade illness. Common findings are anorexia, depression, weight loss, intermittent vomiting and diarrhoea, jaundice. Pyrexia less likely compared to [[Neutrophilic Cholangitis]]
History of chronic waxing and waning low-grade illness. Vague clinical signs which include anorexia, depression, weight loss, intermittent vomiting and diarrhoea, jaundice. Severe illness and pyrexia less likely compared to [[Neutrophilic Cholangitis]]. Some cats in the UK are polyphagic and are frequently presented with ascites and/or jaundice.
===Haematology & Biochemistry===
===Haematology & Biochemistry===
Over half of the cats have marked hyperglobulinaemia
===Imaging===
===Imaging===
Radiographic signs are non specific. Hepatomegaly due to enlargement of biliary ducts and ascites in some cases.
Ultrasonograpy is more helpful and biliary tract dilation can be seen in all cases. Common bile duct is normally dilated and the gallbladder may also be dilated with "sludge". Main differential is extrahepatic biliary obstruction
===Cytology and Culture===
===Cytology and Culture===