The most common cause of unilateral left vocal cord palsy is -: (A) Carcinoma thyroid, (B) Trauma, (C) Carcinoma esophagus, (D) Idiopathic
Answer is B. This question is tricky one.
Most common cause of left recurrent laryngeal nerve (vocal cord) paralysis is bronchial malignancy at the left hilum.
Second most common cause is iatrogenic (surgical) trauma.