Is it painful for patients with advanced cancer?

Advanced cancer patients are not very painful and cancer cell metastasis site related, analysis is as follows:

advanced cancer cells may be transferred to various parts of the body, if cancer cells invade the digestive tract, there is a tendency to abdominal metastasis, generally mild abdominal pain phenomenon; if cancer cells transferred to the bones after compression of the nerve, will cause severe pain.

If the patient feels mild pain can take non-opioid drugs, such as acetaminophen tablets, ibuprofen capsules, etc.; if the patient feels more serious pain can take strong opioid drugs, such as morphine hydrochloride sustained release tablets, morphine sulfate sustained release tablets, etc.