DES MOINES, Iowa (AP) — Former U.S. Representative Tom Latham of Iowa says he has been diagnosed with a form of cancer.

The former Republican congressman wrote on his public Facebook page Wednesday that he was diagnosed recently with a form of lymphoma. His post, which he linked to his verified Twitter account, says he is working with doctors and there’s a treatment plan. He didn’t release more information.

The 67-year-old Latham says in the Facebook post that he is confident he could “beat this and be back to full speed soon.”

Latham was first elected to Congress in 1995, and he retired in 2015. He represented different sections of Iowa during his multiple terms.