Cold Rice and Tuna Salad

1 package rice pilaf
1 can tuna, drained completely. (I prefer white tuna in water)
1 package onion soup mix
1 or 2 radishes diced very fine
1 or 2 green onions diced
Mayonnaise

Cook rice, according to package direction. Allow to cool completely. Combine rice and all other ingredients in bowl. Coat lightly with mayonaise. Chill and serve.