Obstruction in pulmonary stenosis may occur at the following sites:: (A) Supravalvular, (B) Valvular, (C) Subvalvular, (D) All of the above
Answer is D. d. All of the above(Ref: Nelson's 20/e p 2211-2217, Ghai 8/e p 420-423)Pulmonary stenosis can occur due to obstruction at supravalvular, valvular or subvalvular level.