My dad had his doctor's appointment yesterday and the ENT felt that the dysplasia was mild enough that it was a "reasonable" course of action to just watch it --and only intervene with surgery or a laser procedure if it gets worse. He suggested a follow up appointment in four months.

We were very relieved by this, and it seems like a sound plan to us. Does it seem reasonable to all of you experts?

Many thanks for your kind help.
Gwen