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* Benign tumours are more common in cats
* Benign tumours are more common in cats
* Malignant primary tumours include:
* Malignant primary tumours include:
** [[Liver Proliferative - Pathology #Hepatocytic|Hepatocellular carcinoma]]
** [[Liver Proliferative - Pathology #Hepatocytic|Hepatocellular carcinoma]] - the most common primary liver tumour in dogs and the second most common in cats
** [[Liver Proliferative - Pathology #Cholangiocellular|Cholangiocellular carcinoma]]
** [[Liver Proliferative - Pathology #Cholangiocellular|Cholangiocellular carcinoma]]
** Gall bladder carcinoma
** Gall bladder carcinoma
** Elevated bilirubin
** Elevated bilirubin
===Plain Abdominal Radiography===
A cranial abdominal mass is often observed with displacement of the stomach caudally and laterally with massive hepatic neoplasms. Occasionally mineralisation of the biliary tree is observed in dogs with cholangiocellular carcinoma. Three thoracic views should also be taken to assess lung metastasis although this is uncommon at the time of diagnosis.
===Plain Radiography===
===Ultrasonography===
===Ultrasonography===
Always recommended to evaluate the condition of surrounding structures. It also allows classification of the mass as massive, nodular or diffuse. Doppler techniques can also be utilised to assess the vascular structure of tumours. Guided fine-needle aspirates or core biopsies can also be taken at this time (a coagulation profile is hightly advised prior to liver biopsy due to risk of haemorrhage). If the lesion is solitary and massive surgical resection without preoperative biopsy is usually undertaken as diagnosis and treatemnt are accomplished in the singel procedure.
===Advanced Imaging===
===Advanced Imaging===
CT and MRI are more sensitive in detecting small lesions and confirming the relationship of the mass with surrounding tissues and vasculature.
==Description==
==Signalment and Description==
===Hepatocellular Tumours (Hepatocellular carcinomas (HCC) and Hepatomas)===
* HCC occurs more frequently in dogs and hepatomas more commonly in cats. Male dogs over 10 years old are the most frequently affected. Miniature schnauzers may have a breed predisposition.
* Hepatomas are usually incidental findings and non-significant
Carcinogens and toxins for example nitrosamines can induce hepatic tumours in an experimental environment.
Cholangiocellular carcinoma occurs more commonly in female cats
==Treatment==
==Treatment and Prognosis=
==References==
==References==