Can a vascular AVM in the brain cause brain cancer or any type of cancer or stroke down the line?

Cancer-no, Stroke-? AVM's (artero-venous malformations) do not cause cancer. Whether or not they may cause a stroke, depends! The location, size, luck, and other risk factors all must be figured in. Lots of people have AVM's in their brains and elsewhere and never know they have them because they never cause problems.
Not related. An AVM does not predispose you to cancer by itself. It does however increase your chances of having a stroke. .