Treatments for small cell lung cancer

Treatment for small cell lung cancer (SCLC) depends mainly on the stage of the cancer (how far it has spread), a person’s general health, and their wishes and treatment goals. For limited-stage disease, treatment is often given with the aim of curing the cancer. For extensive-stage disease, treatment usually aims to control the cancer, relieve symptoms, and prolong life, rather than cure the disease.

Most treatments are systemic, meaning they travel through the bloodstream to reach cancer cells throughout the body. Each treatment can cause side effects, which your care team will discuss with you.

Chemotherapy

Chemotherapy is a main treatment for small cell lung cancer. It usually involves two medicines, most often etoposide plus either carboplatin or cisplatin. Chemotherapy may be given alone or combined with immunotherapy (chemoimmunotherapy) or, especially in limited-stage disease, radiotherapy (chemoradiotherapy).

Chemotherapy works by targeting rapidly dividing cells, such as cancer cells. However, it can also affect healthy cells, leading to side effects. Your healthcare team can provide medicines and advice to manage these effects.

Immunotherapy

Immunotherapy helps the immune system recognize and attack cancer cells. In extensive-stage small cell lung cancer, immunotherapy may be started with chemotherapy and also used as a maintenance treatment if effective. 

Common immunotherapy medicines used for small cell lung cancer include atezolizumab, durvalumab, and tarlatamab. Each of these medicines has slightly different uses and may be recommended depending on your specific situation. Not all patients can have immunotherapy, especially if they have certain autoimmune conditions. 

Radiotherapy

Radiotherapy uses high-energy radiation to destroy cancer cells. It may be used to treat the chest or specific areas that the cancer has spread to.

Prophylactic cranial irradiation (PCI)

PCI is radiotherapy to the head that may be offered to reduce the chance of cancer spreading to the brain. It is preventive, unlike radiotherapy for brain metastases, which treats cancer already in the brain.

Surgery

Surgery is rarely used in small cell lung cancer. It may be considered in very early-stage disease, where the cancer is small and has not spread to lymph nodes. The usual operation is called a lobectomy, which removes part of the lung.

Treatment for relapse

If small cell lung cancer returns after treatment (relapses) or does not respond well, further chemotherapy or other treatments may be considered that may help control it and relieve symptoms. Options depend on the time since previous treatment, how well the cancer responded before, and a person’s overall health.

Supportive care

Supportive care focuses on managing symptoms and maintaining quality of life, and this can be given alongside active treatment or on its own if further treatment isn’t suitable. It may include pain relief, radiotherapy to specific areas to reduce symptoms, procedures to keep airways open, and support from palliative care teams. 

Clinical trials

Clinical trials test new treatments or new ways of using existing treatments. They may offer access to promising therapies being studied for small cell lung cancer that are not yet widely available. Your healthcare team can help determine if a clinical trial may be suitable for you.

Participating in a clinical trial can also enable access to expert care and additional monitoring, and it gives the opportunity to contribute to research that may help future patients.

References

1. National Comprehensive Cancer Network® (NCCN®). NCCN guidelines for patients: Small cell lung cancer, 2024. https://www.nccn.org/patients/guidelines/content/PDF/SCLC-patient-guideline.pdf. Accessed Mar 3, 2026. 

2. Cancer Research UK. Small cell lung cancer (SCLC) treatment. https://www.cancerresearchuk.org/about-cancer/lung-cancer/treatment/small-cell-lung-cancer. Updated Jan 13, 2026. Accessed Mar 3, 2026.

3. Cancer Research UK. What is external radiotherapy. https://www.cancerresearchuk.org/about-cancer/treatment/radiotherapy/external/what#how-you-have-external-radiotherapy. Updated Oct 27, 2023. Accessed Mar 3, 2026.