Adjuvant Chemotherapy and Immunotherapy for Completely Resected Small Cell Lung Cancer

This study is testing whether adding chemotherapy and immunotherapy after surgery improves outcomes for patients with small cell lung cancer (SCLC) that was completely removed surgically. Small cell lung cancer is an aggressive type that typically spreads quickly. **You may be eligible if...** - You are 18 years old or older and weigh more than 30 kg - You have a confirmed diagnosis of early-stage small cell lung cancer (T1-T2, N0-N1, no distant spread) - Your cancer was completely removed by surgery within the past 78 days - You have had complete lymph node removal or sampling during surgery - You have not previously received any systemic therapy for small cell lung cancer - Your expected life expectancy is at least 12 weeks **You may NOT be eligible if...** - Your cancer was not completely removed - You have received prior chemotherapy or immunotherapy for this cancer - Your overall health makes additional treatment unsafe Talk to your doctor to see if this trial is right for you.