Hoarseness can be referred to as hoarseness and is a very common symptom. Lower lobe nodular foci of the lungs are usually not associated with hoarseness. Hoarseness may be related to laryngitis, vocal polyps, pharyngeal tumors, damage to the laryngeal reentrant nerve, etc. It needs to be treated according to the cause. 1. Pharyngolaryngitis: most of the causes of hoarseness are upper respiratory tract infections, such as viral infections that lead to inflammation of the throat, patients may have hoarseness, cough, cough, phlegm, sore throat and other symptoms, treatment needs to be given to ribavirin and other anti-infective treatment. 2. Vocal polyps: its onset is related to the occupation, commonly found in more talking occupations, such as teachers, tour guides, etc., surgical treatment can be carried out. 3. Pharyngeal tumors: patients with pharyngeal tumors, if the tumor presses on the recurrent laryngeal nerve, which leads to hoarseness, need to be examined in detail, and be treated professionally for the tumor. 4. Damage to the recurrent laryngeal nerve: Damage to the recurrent laryngeal nerve is a common and serious complication of thyroid, parathyroid or neck surgery, which is often manifested as hoarseness or difficulty in vocalization. It can be treated with nerve-nourishing drugs such as vitamin B12. Hoarseness can also be caused by other diseases, and it is recommended to consult a doctor in time to identify the cause and then carry out targeted treatment. At the same time, the cause of the nodular foci in the lower lobes of the lungs should be clarified, and the patient should follow the doctor’s instructions for treatment or follow-up observation.