How long can esophageal cancer metastasis live?

A patient with esophageal cancer and bone metastases belongs to stage four in terms of staging. Stage one is the earliest and stage four is the latest. They are among the top ten patients in the late stage. So for such patients, their survival time and prognosis are relatively poor. His treatment is mainly systemic treatment and systemic chemotherapy. Then the specific length of life is related to the patient's efficacy on chemotherapy, as well as the patient's own general condition. Bone metastasis, if a single bone metastasis, and the pain is more severe, we can cooperate with local radiotherapy, this kind of patient, his approximate survival period, generally speaking, it is very difficult, that is, the five-year survival period is very low, generally rarely more than five years, so it depends on some specific circumstances, mainly related to the sensitivity of treatment.