The normal carinal angle at the tracheal bifurcation is around?: (A) 40-50 degrees, (B) 50-60 degrees, (C) 60-75 degrees, (D) 75-90 degrees
Answer is C. Ans CCarinal angle is influenced by indentation from adjacent structures/lesions on the tracheal bifurcation. Normally it is 60 to 75 degrees. Any mass at carina like duplication cysts or left atrial enlargement results in widening of the angle.