@helen1000 I am not yet in your shoes but concerned I may be shortly. Interested what others have to say on the subject. Practically speaking, it makes sense to me to resect a persist cavity but I don’t know all the pros and cons of that decision making process. Not all cavities are well positioned for resection so it can be considered fortunate that yours is, though surgery is never an easy decision. Hopefully others with experiences on point will share their thoughts.