Hi and welcome to Healthcare magic.Thank you for the query.
The death is not something that should happen in AVM. It should be treated endoscopically or by open surgical procedures if there is danger of bleeding. And obviously this AVM may have serious consequances so consult your surgeon about it. Partial esophagectomy
can be performed and if endoscopic procedures arent enough, I recommends this surgical procedure.
Wish you good health. Regards