Which symptom is listed as a cancer warning sign involving the respiratory system?

• A. Nagging Cough
• B. Weight Gain
• C. Dysphagia
• D. Hoarseness

Answer: (A)

A persistent, nagging cough is a hallmark warning sign for cancers affecting the airways and lungs. When a cough lasts for several weeks and isn’t explained by a simple infection or allergies, it can indicate that a growing tumor is irritating the lining of the airways or lung tissue, affecting how the airways clear themselves. This is especially true for lung cancer, where the cough often becomes chronic before other symptoms appear. By contrast, weight gain isn’t typically linked to cancer in the respiratory system (weight loss is more common), dysphagia points to throat or esophageal issues, and hoarseness suggests involvement of the voice box or nearby structures. So, a long-lasting cough is the best fit as a respiratory system cancer warning sign.