Patient: In the past two months, I had an operation for a mediastinal swelling in my lung. How can I recover my voice? Answer: 1, after the lung mediastinum surgery, affect the function of the laryngeal nerve, causing vocal fold paralysis and hoarseness, the most likely. If the basic physical condition allows, you can perform otolaryngology fiberoptic laryngoscopy to observe the vocal cord activity. 2, a small number of elderly patients, because of vocal cord atrophy, closed seams, causing hoarseness. Otolaryngology fiberoptic laryngoscopy can be performed to observe the vocal cord pattern. 3. A small number of elderly patients with age-related diseases such as Parkinson’s disease, causing dysarthria, can be seen by otorhinolaryngology and neurology.