Prayer for Healing

I'm asking for prayer for my son Lee, he's been diagnosed with a fast growing tumor in his jaw. It's undetermined at this time whether it's cancerous or not. tumor is growing rapidly. He only goes to church when I'm visiting because he's so busy with his job that flies him all over the country. He's under a lot of stress, and I think that's part of the reason he has this tumor. Thank you for praying for my son. Katherine