Category:Liver, Primary Tumours
Primary tumours are not as common as secondary tumours. They may arise from each of the four main tissues within the liver, liver parenchymal cells (hepatoma, liver cell carcinoma), bile ducts (cholangioma, bile duct carcinoma), blood vessels (haemangioma, haemangiosarcoma), connective tissue (fibroma, sarcoma). NB: Liver cell tumours and malignant bile duct tumours are the two most common primary hepatic neoplasms. Liver cell tumours are usually seen as discrete masses within the liver parenchyma. The tumour tissue is usually reddish brown in colour. It can be malignant, metastases occuring to the local lymph nodes and lungs.
Adenoma
Carcinoma
Hepatocytic
- more in dogs and cats
Gross
- can be difficult to distinguish grossly from adenomas
- usually one single large mass and additional smaller masses (intrahepatic metastases)
- may have features of malignancy such as internal necrosis and haemorrhage
Microscopically
- can be very variable appearing as sheets or cords of neoplastic cells
- cells generally smaller with a higher nucleus to cytoplasmic ratio
Cholangiocellular - bile duct
Adenoma
Haemangiosarcoma
Cholangiocellular - bile duct
Pages in category "Liver, Primary Tumours"
The following 3 pages are in this category, out of 3 total.