Lung cancer is one of the deadly diseases suffered by many people. Lung cancer sufferers often realize the emergence of symptoms of this disease and are only diagnosed when they have entered an advanced stage. Therefore, it is important for you to know the symptoms of early-stage lung cancer, so that it can be treated early. Lung cancer ranks first as the highest cause of death from cancer in the world, namely 1.7 million deaths in 2015 according to the World Health Organization (WHO). One of the causes of this high death rate is due to the difficulty of diagnosing symptoms arising from lung cancer early, so that many new cases of lung cancer are diagnosed when it has entered an advanced stage that is difficult to treat. Early Stage Lung Cancer Symptoms It is not easy to realize the presence of symptoms of lung cancer in the early stages, because most of the symptoms of this disease are not typical and are often similar to other diseases, such as tuberculosis, pleural effusion, p