Signs and symptoms
... Because lung cancer doesn''t cause signs or symptoms in its earliest stages, it''s often quite advanced by the time it''s diagnosed. The most common warning sign is a cough, which occurs when a tumor ...

Causes
... Your lungs are two large, spongy organs shaped something like an upside-down butterfly. One lung is located on each side of your chest. They''re separated by the mediastinum — the tissues and or...

Risk factors
... Smoking remains the greatest risk factor for lung cancer, accounting for as many as 9 out of every 10 cases of the disease. Your risk increases with the number of cigarettes you smoke each day and the...

Screening and diagnosis
... Screening for lung cancer is controversial. The American Cancer Society currently doesn''t recommend screening tests for lung cancer, even in high-risk individuals. But some doctors believe that smoke...