RT Book, Section A1 Dowell, Jonathan E. A1 Drapkin, Benjamin J. A1 Gerber, David E. A1 Johnson, David H. A2 Grippi, Michael A. A2 Antin-Ozerkis, Danielle E. A2 Dela Cruz, Charles S. A2 Kotloff, Robert M. A2 Kotton, Camille Nelson A2 Pack, Allan I. SR Print(0) ID 1195013481 T1 Small Cell Lung Cancer: Diagnosis, Treatment, and Natural History T2 Fishman’s Pulmonary Diseases and Disorders, 6e YR 2023 FD 2023 PB McGraw-Hill Education PP New York, NY SN 9781260473988 LK accessmedicine.mhmedical.com/content.aspx?aid=1195013481 RD 2024/04/19 AB Small-cell lung cancer (SCLC) is, in many ways, a unique tumor. Untreated, it is a highly virulent malignancy, with a life expectancy best measured in weeks. Conversely, it displays exquisite chemosensitivity, resulting in partial or complete responses in the majority of cases. For the first time in more than 30 years, the standard of care for advanced SCLC has changed with the addition of immune checkpoint inhibitor therapy to standard chemotherapy. Unfortunately, even with this advance, durable tumor responses are rare, and as a result, more than 95% of SCLC patients die from their disease. This chapter reviews the biology, epidemiology, diagnosis, clinical presentation, staging, and current management of this difficult disease.