How would you differentiate hoarseness due to recurrent laryngeal nerve injury from chest wall pain?

How would you differentiate hoarseness due to recurrent laryngeal nerve injury from chest wall pain?

• A. Hoarseness points to laryngeal nerve involvement and voice disturbance
• B. Chest wall pain is localized to the chest with reproducible tenderness
• C. There is no diagnostic test needed
• D. Laryngoscopy may show vocal cord paralysis

Answer: (D)