Lung Cancer is the cause of an abnormality in the cells of the body that manifests into their uncontrolled division of forming new cells and instead release of cells forming into a mass called a tumor. Doctors may use a number of diagnostic methods and tests to detect lung cancer. Among the various tests, X-ray (chest X-ray) is the foremost diagnostic step performed when there are new symptoms of lung cancer prevalent in the body. It basically involves an examination from the back to the front of the chest, and to its sideways. Chest x-rays diagnoses calcified nodules in the lungs (benign tumors) termed as hematomas, as well as mimic lung cancer.