How would you manage a small posterior vaginal defect noted at the time of cervical brachytherapy?

If it is from a disease, I would continue brachy as planned and address the defect based on response and healing.

If unrelated to disease, I would have it sutured and continue brachy as planned.

I agree with Dr. @Dr. First Last and his wise recommendation. However, I would like to see the results of a biopsy of the suspected site.

If it is a tumor regression cavity that had a complete clinical response and no fistula at the moment. What dose and technique would you recommend?