Dr. Abbas El-Sayed Abbas, Chief of Thoracic Surgery at Brown Surgical Associates, discusses the thoracic surgery program at the Lifespan hospitals, and how it helps patients with lung cancer, esophageal cancer, and other thoracic diseases. Dr. Abbas, an internationally recognized expert, is also chief of thoracic surgery at Lifespan and chief of thoracic oncology for the Lifespan Cancer Institute.