Updated

Houston, TX (SportsNetwork.com) - Houston Texans offensive tackle David Quessenberry has been diagnosed with lymphoma and will be placed on the NFL's non-football illness list.

The Texans said Quessenberry experienced fatigue and a persistent cough the past week and underwent tests to determine the cause. He is being treated through M.D. Anderson Hospital.

"Our medical community here in Houston is the best in the world," said Texans general manager Rick Smith in a statement Tuesday. "We are extremely confident in the care and treatment David will receive. He is a fighter and a courageous young man and we look forward to his full and complete recovery. We will continue to support him and his family and look forward to his return to the team."

Quessenberry was selected by the Texans in the sixth round of the 2013 NFL Draft.