Leukemia called neoplastic clonal disease of the hematopoietic system. To the group of leukemia are different in the etiology of the disease. During leukemia immature hematopoietic cells in the bone marrow become producers of malignant clone.
Lung cancer is a malignant tumor, the source of which is the epithelial tissue of the lung. Lung cancer is the Central (lesion of bronchus) and peripheral (development of the lung parenchyma).