Re: venous/lymphatic malformation of mouth
I live in Montreal, Canada. I was operated for an arteriovenous malformation of the lip in 2003 by Dr. Waner, then in Arkansas, and who now practices in NYC. He's THE doctor for what you describe: a vascular malformation of the tongue, cheek and lip. The vast majority of his patients are children.
Go in the Left Menu, and click on Find a Physician: his infos are there. If you need any more information or help, don't hesitate to e-mail me.