By RANDY COVITZ

Tribune News Service

Kansas City Chiefs Pro Bowl safety Eric Berry has a mass in the right side of his chest that will be further examined by a lymphoma specialist in Atlanta, the team announced Monday.

No definitive diagnosis has been made, but Berry was placed on the Chiefs' non-football injury list and will not play in Sunday night's home game vs. Denver.

Berry, 25, felt discomfort in his chest after last Thursday night's game at Oakland, and underwent tests in Kansas City, where the preliminary diagnosis was made. He will be evaluated through the next few days at Emory University in Atlanta.

Chiefs coach Andy Reid said Berry was upbeat Monday, when he addressed the team.

"Right now, he needs to be a beast," Reid said. "He'll attack this."

Chiefs owner Clark Hunt also spoke to Berry.

"He sounded upbeat ... and very positive ... his mindset was very much of tackling this," Hunt said.

Berry issued a statement that was released by the Chiefs.

"I am truly thankful for all of the support from family, friends, coaches, teammates and the entire Chiefs kingdom," Berry said in the release. "At first I was in shock with the diagnosis on Saturday and did not even want to miss a game, but I understand that right now I have to concentrate on a new opponent.

"I have great confidence in the doctors and the plan they are going to put in place for me to win this fight. I believe that I am in God's hands, and I have great peace in that. I know my coaches and teammates will hold things down here the rest of the season and until I am back running out of the tunnel at Arrowhead.

"I am so thankful and appreciative of being a part of this franchise and playing in front of the best fans in the NFL. I will be back!"