Until now, lung cancer remains a major problem in the medical world. Lung cancer is difficult to know at an early stage because symptoms are not felt by people. Cancer cells grow wildly and halt function can inhibit lung. In India Lung cancer cause of death of men and over 70% of new cancer patients are known disease at an advanced stage. As a result, only 5% of patients who can survive up to 5 years after being found positive for cancer.

Symptoms

Lung cancer is not accompanied by certain symptoms in the early stages. But in the later stages there are the following symptoms.

•                 Persistent cough and prolonged
•                 Shortness of breath and hoarse lungs ache
•                 Cough and bloody sputum
•                 Pain in the chest when coughing
•                 Pain during the heat a deep breath
•                 Loss of appetite and body weight decreased

Examination

X-ray examination can be used to detect cancer cells in the lung. Tumor shadow at a certain size will appear on X-ray photographs. Examination also is used to detect cell-cell lung cancer. Bronchoscopy examination is a complementary examination to ensure there is lung cancer. Bronchoscopy is an examination of the lungs observed using a flexible tube that can be controlled by doctors. Through this examination of the tumor cells would seem then performed making the cancer cells to determine certainty.

Prevention

Prevention of lung cancer the most important is not smoking at an early age. Lately prevention with chemoprevention is mostly done by taking vitamin C, selenium, and carotenoids, retinoic acid derivatives.