All are true about thymus swelling except –: (A) Widening of mediastinum on X–ray, (B) Sharp border with sail like appearance, (C) Steroid administration reduces size of swelling, (D) Shift of trachea on X–ray
Answer is D. Thymic shadow does not indent tracheal shadow. A mediastinal shadow indenting tracheal shadow should always be evaluated for a significant pathology.
Thymic swelling may cause widening of anterior mediastinum. Thymic swelling causes a sail-shaped shadow. Thymic swelling may shrink with use of steroids.