Why does small-cell lung cancer have a low survival rate?

Small-cell lung cancer (SCLC) is considered the most aggressive form of lung cancer. Its low survival rate is primarily attributed to its rapid growth and tendency to metastasize, or spread, to other parts of the body before symptoms become apparent.12

Because the disease often reaches an advanced stage before it is detected, patients frequently face a poorer prognosis. While lung cancer generally has a lower survival rate than many other cancers due to late-stage diagnosis, the specific biological nature of SCLC—characterized by small, highly malignant cells—makes it particularly difficult to manage.12