In the early stages of liver cancer, patients generally do not experience pain when pressing on the liver area. Pain in the liver area or a sensation of liver pain typically occurs in the middle or late stages of liver cancer and is a common manifestation.

The main reasons for the pain are that the liver cancer lesions are large, causing an increase in liver volume, which leads to a tense pain in the liver capsule. Additionally, the invasion of liver cancer into the liver cells and surrounding tissues can cause pain. Another cause of pain may be abnormal hormone secretion triggered by the lesions, which then stimulates the pain perception centers, resulting in pain.

For patients with early-stage liver cancer, the tumors are generally small and usually do not cause noticeable clinical symptoms. In many cases, patients may exhibit non-specific symptoms such as indigestion and mild fatigue. In contrast, patients with middle to late-stage liver cancer often exhibit more clinical manifestations due to the progression of the disease.