Purpose is something that influences goal. Purpose is the reason for achieving the goal. Objective is the specific action which one try to achieve as a short term plan. For eg. I want to invent something and achieve success in my field ->GOAL.
Yes, lung nodules can be cancerous, though most lung nodules are noncancerous (benign). Lung nodules â small masses of tissue in the lung â are quite common. They appear as round, white shadows on a chest X-ray or computerized tomography (CT) scan.
The causes of benign lung tumors and nodules are poorly understood. But in general, they often result from problems like these: Inflammation from infections such as: 1  An infectious fungus (histoplasmosis, coccidioidomycosis, cryptococcosis, or aspergillosis, for example). 2  Tuberculosis (TB). 3  A lung abscess.