1. Lung cancer : Causes, incidence, and risk factors  (Trust Mark: Doctor-Reviewed)
Lung cancer is the deadliest type of cancer for both men and women. Each year, more people die of lung cancer than breast, colon, and prostate cancers combined. Lung cancer is more common in older adults. It is rare in people under age 45. Cigaret...• Reviewer: James R. Mason, MD, Oncologist, Director, Blood and Marrow Transplantation Program and Stem Cell Processing Lab, Scripps Clinic, Torrey Pines, California. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

2. Lung cancer - small cell : Causes, incidence, and risk factors  (Trust Mark: Doctor-Reviewed)
About 15% of all lung cancer cases are small cell lung cancer. Small cell lung cancer is slightly more common in men than women. Smoking almost always causes small cell lung cancer. This type of lung cancer is rare in those who have never smoked. ...• Reviewer: Sean O. Stitham, MD, private practice in Internal Medicine, Seattle, Washington; and James R. Mason, MD, Oncologist, Director, Blood and Marrow Transplantation Program and Stem Cell Processing Lab, Scripps Clinic, Torrey Pines, California. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.