Liver cancers can be primary liver cancers that arise in the liver, or secondary (metastatic) cancers that spread form a primary cancer elsewhere in the body.
The commonest primary liver cancer is a hepatocellular carcinoma, also called an HCC or sometimes a hepatoma. The commonest causes of hepatocellular carcinoma in adults are
- Cirrhosis - a condition where scarring and regeneration and inflammation of the liver result in permanent liver damage.
- Viral hepatitis - hepatitis B or hepatitis C
- Alcohol
- Haemochromatosis and other “storage disorders” that affect the liver. Haemochromatosis is due to an excess of iron.
- Fatty liver disease associated with obesity and / or diabetes
- Toxins of various types, from agricultural (aflatoxin) or chemical exposure
Most patients with cirrhosis or with chronic (long-term) viral hepatitis require life-long screening with ultrasound tests and blood tests every six months.
Hepatocellular carcinoma can also occur with none of the above risk factors.
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