The commonest anterior mediastinal tumour is: (A) Aneurysm of descending aoa, (B) Neurogenic tumour, (C) Thymoma, (D) Bronchogenic cyst
Answer is C. Thymomas are the most common anterosuperior mediastinal tumors accounting for 25% of the total.They are commonly associated with myasthenia gravis.Diagnosis and treatment is best achieved by complete thymectomy. Reference:SRB's manual of surgery,5th edition,page no:1127.