For vaginal cuff recurrence of an endometrial cancer, when do you utilize a multichannel cylinder versus single channel cylinder if a patient has <5 mm residual disease after EBRT?  

If disease is confined to one wall, favor MC applicator as I treat vaginal wall thickness for side involved while surface on other side. MC allows that flexibility.Here is the link to our publicationGebhardt et al., PMID 29929925