Take the example of liver cancer, which is particularly common among Chinese people. In its early stages the disease often has no symptoms, and it is hard to cure by the time any abnormality is discovered.
以國人常見的肝癌為例，由於早期沒有任何症狀，一旦發現異樣，已經到了末期，很難治癒，因此被視為「惡性」癌症。