There is no statement of the most effective treatment in the clinic. Small cell lung cancer can be treated by surgery, chemotherapy, radiotherapy and targeted therapy. Small cell carcinoma, a kind of low differentiated neuroendocrine tumor, is characterized by rapid proliferation and early extensive metastasis, and most of the metastases in brain, liver, bone or adrenal glands have already appeared at the time of initial diagnosis, and only about 1/3 of the patients are confined in the chest. This type of lung cancer is more sensitive to chemotherapy. The first-line chemotherapeutic agents include irinotecan or etoposide, combined with carboplatin or cisplatin, usually 4 to 6 cycles. For patients with limited stage of small cell carcinoma with clinical stage I to IIA may benefit from surgery, but radiotherapy and chemotherapy are the mainstay, while chemotherapy is mostly used for patients with extensive stage. Small cell carcinoma has a high rate of recurrence, and first-line regimens may be repeated for patients with recurrence. If you suffer from small cell lung cancer, it is recommended that you undergo treatment under the guidance of regular medical professionals to avoid delays.