What is the second fastest growing lung cancer?

The second fastest growing lung cancer is typically small cell lung cancer (SCLC), which is known for its rapid progression and aggressive nature. SCLC accounts for about 15% of all lung cancer cases and is often diagnosed at an advanced stage due to its tendency to spread quickly. This type of cancer is closely associated with smoking and has a poorer prognosis compared to non-small cell lung cancer (NSCLC). Prompt diagnosis and treatment are crucial for improving outcomes in patients with SCLC.