Preheat Oven To 350 Degrees F (175 Degrees C). In A Medium Bowl Combine The Chicken, Soup, Mayonnaise And Macaroni; Mix Well And Spread Mixture Into A 9X13 Inch Baking Dish. Bake At 350 Degrees F (175 Degrees C) For 35 To 45 Minutes, Or Until Cooked Through.