Lung cancer is the overgrowth of malignant glands in the lungs causing failure and blockages.
The pulmonologist is a medical specialist in respiratory diseases.
The oncologist at a doctor specialized in diagnosing and treating cancer.
A radiotherapist is a specialist in performing radiation therapy that involves the use of X-rays with high doses of radiation to destroy cancer cells.
Remember that for the proper selection of health professional that treats lung cancer you must consider the nature, severity and symptoms you are presenting.