Angle of tracheal bifurcation is increased in which chamber of hea enlargement.: (A) Left atrium, (B) Right atrium, (C) Left ventricle, (D) Right ventricle
Answer is A. Normal tracheal angle: 40- 80deg The angle of tracheal bifurcation may be widened in the following conditions due to the mechanical splaying of the bronchi: Subcarinal masses Lobar collapse Left atrial enlargement Generalized cardiomegaly Pericardial effusion