Lung cancer is a serious disease characterized by the abnormal and uncontrolled growth of cells in the lungs. While the primary function of the lungs is to supply oxygen to the body and remove carbon dioxide, this uncontrolled proliferation of cells can impair the function of lung tissue.

Common symptoms of lung cancer may include a persistent cough lasting at least three weeks, shortness of breath, unexplained weight loss, constant fatigue, chest pain when breathing or coughing, hoarseness, recurrent pneumonia or bronchitis, shoulder pain, swelling in the face or neck, difficulty swallowing, and palpable lumps in the neck or collarbone area.