Lung Cancer :
Lung cancer refers to an uncontrolled cell division in the lungs and forms masses and tumors of the tissue. Types include nonsmall cell lung cancer, small cell lung cancer, and lymphomas. Symptoms of lung cancer include persistent cough, shortness of breath, trouble breathing, chest pain, discomfort, wheezing, coughing up blood, hoarseness, loss of appetite, unexplained weight loss, tiredness, fatigue, pain in the shoulder, swelling in the face, arms, neck and upper chest, drooping eyelid in one eye and sweating on one side of the face. Risk factors are caused by a history of tobacco use, exposure to secondhand smoke, exposure to arsenic, asbestos, and chromium, living in a polluted area, family history of lung cancer, infection with HIV, and radiation exposure. If lung cancer spreads to other parts of the body, it may cause bone pain, leg weakness, dizziness, headache, balance problems, jaundice, and swollen lymph nodes. Diagnosis can be made by blood tests, chest X-rays and biopsy.