Dr. Enrique Puertas Calvo, a distinguished radiation oncologist, is renowned for his expertise in performing radiotherapy and other advanced radiation procedures with a high success rate. His commitment to reducing lung cancer mortality is evident in his involvement with the CASSANDRA project in Spain, a pilot screening initiative led by the Spanish Society of Pneumology and Thoracic Surgery. The project aims to assess the viability of lung cancer screening programs, focusing on individuals at high risk, such as smokers and ex-smokers aged 50 to 75 years. Dr. Puertas Calvo emphasizes the significance of lung cancer screening in detecting tumors at early stages, contributing to a notable reduction in mortality rates. He underscores the success of screening programs in diagnosing 80% of tumors in their early stages, resulting in mortality reduction ranging from 20% to 55%. Notably, these screening initiatives not only diagnose lung cancer but also identify other health issues, leading to a 10% reduction in overall mortality. Dr. Puertas Calvo's expertise extends to innovative treatments like Stereotactic Body Radiotherapy (SBRT), providing effective alternatives for patients who may not be suitable candidates for surgery. His contribution to the field spans over 15 years, impacting the lives of more than 200 patients at Hospital QuirónSalud Barcelona.