Dr. Please tell me how to cure small cell cancer when it spread to liver in stage three..

No cure. An oncologist can manage it and the initial response to chemotherapy is almost always good. Do not expect a cure, and when it recurs be ready to set life in order Nd go to hospice. Some people Find some meaning in encouraging others not to take up smoking. Be grave and best wishes.
This situation. can probably not be "CURED" but it CERTAINLY CAN BE TREATED! A consultation with an ONCOLOGIST (Cancer Specialist) is necessary! Hope this helps....\ Dr Z.
Oncology . If you have access to a university hospital, medical school or academic center, they may be able to provide the best options for stage III cancer Best of luck.