Left-sided vocal cord palsy is commonly due to
Bronchogenic carcinoma is an impoant cause of left recurrent paralysis and should always be excluded by X-ray chest, bronchoscopy and biopsy unless the other cause is obvious. Other causes are Thyroid surgery Enlarged left auricle Intrathoracic surgery Thyroid disease (benign or malignant) Aoic aneurysm, Mediastinal lymphadenopathy Idiopathic Ref: PL Dhingra Textbook of Ear, Nose and Throat, Edition 6, page - 299
Left hilar bronchial carcinoma
Mitral stenosis
Thyroid malignancy
Thyroid surgery
Larynx