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Lung cancer symptoms - what to look out for. symptoms are not easily detected during early stages of the disease. The first symptoms to appear are often similar to those of other, nonmalignant respiratory ailments. Patients may develop a persistent cough, or find that a chronic smoker’s cough is worsening.
Other symptoms include chest pain, shortness of breath, hoarseness, bloody sputum (fluid coughed up from the respiratory tract), and frequent bouts of bronchitis or pneumonia. Sometimes, the first symptoms of lung cancer are bone pain, headaches, dizziness, or other signs that the disease has metastasized. About 41 percent of people diagnosed with lung cancer survive one year after diagnosis and only 14 percent survive five years. 
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