Left-sided vocal cord palsy is commonly due to: (A) Left hilar bronchial carcinoma, (B) Mitral stenosis, (C) Thyroid malignancy, (D) Thyroid surgery
Answer is A. 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