<prompt> In carcinoid syndrome, the ap of hea mostly affected is:Outflow tract of RVInflow tract of RVInflow tract of LVOutflow tract LV  <response>: Answer is B Inflow tract of RV The most commonly involved valve in, carcinoid syndrome is tricuspid valve which forms the inflow tract of Right ventricle. Most commonly involved pa of hea : Inflow tract of RV Tricuspid valve Second most commonly involved pa of hea : Outflow tract of RV Pulmonic valve 