Cancer of the liver can be divided into primary liver cancer and secondary liver cancer:
Primary liver cancer means that the cancer started in the liver. In the UK, primary liver cancer is uncommon. There are around 6,200 cases of primary liver cancer each year in the UK, making it the 18th most common cancer, accounting for 2% of all new cancer cases. It occurs most commonly in people aged 85 - 89, with 40% of all cases being diagnosed in those aged 75 or over.
This is a companion discussion topic for the original article at https://patient.info/cancer/primary-liver-cancer-leaflet