Nasopharyngeal cancer radiotherapy for 4 years combined with right upper abdominal pain (including liver pain) may be liver pain caused by liver metastasis after nasopharyngeal cancer radiotherapy and chemotherapy, or it may be caused by other reasons. Multiple reasons can cause pain in liver area, liver pain after radiotherapy and chemotherapy for nasopharyngeal cancer may be caused by metastasis of nasopharyngeal cancer to liver or alcoholic liver, fatty liver, hepatitis and other reasons. In order to know the condition patients should do liver ultrasound, CT, MRI and other examinations, and liver tissue biopsy if necessary. Patients have to do the relevant examination of liver and also the examination of nasopharyngeal area. Nasopharyngeal cancer combined with liver metastasis or liver cancer may cause pressure symptoms, and the affected area may be swollen and painful, and the cancer is often accompanied by fever, body wasting and other such symptoms. If liver pain occurs after radiotherapy for nasopharyngeal cancer, you need to consult doctor in time, do not use medicine by yourself and delay the condition, you need to find out the cause of the disease and treat it under the guidance of physician.