The carcinoma of the lungs (commonly known as lung cancer) is caused due to the uncontrolled growth of cells in the tissues of lungs. This carcinoma can spread to other parts of the body through a process called metastasis. The general respiratory symptoms are wheezing, coughing, coughing with blood, and loss of breath. The systemic symptoms are angina pectoris, osteoporosis, fever, clubbing of fingers and difficulty in swallowing food. Due to the uncontrolled cell growth, lung cancer can lead to obstruction of the airway tubes and can cause the accumulation of secretions, leading to pneumonia. Smoking, passive smoking, air pollution, radon gas, asbestos fibers, genetics and lung diseases are the causes of lung cancer. Radiotherapy, chemotherapy and surgery are various forms of treatment for lung cancer.
HOW IS LUNG CANCER DIAGNOSED?
About 75% of lung cancer is predominantly seen in people aged above 65 years and about 3% occurs in those below 45 years.