I got lung cancer two years ago and recovered after treatment. I learned last month that the tumor had metastasized to the brain, about 2-3 cm, and the doctor said it was not optimistic.

The most common metastasis of lung cancer is brain metastasis, because the residual tumor cells are not cleaned up after treatment and become the source of tumor recurrence. At present, in addition to common radiotherapy and chemotherapy, it can also be combined with biological treatment of tumors. On the one hand, it can improve immunity, kill residual tumor cells, improve symptoms and improve quality of life. The combination of radiotherapy and chemotherapy can also play a coordinating role. See China Biotherapy Network for details.