When treating endometrial cancer patients with a combination of chemotherapy and vaginal cuff brachytherapy, when do you deliver cuff brachy?

I prefer, most of the time, between the cycles of chemotherapy (1 to 3) based on logistics.

Usually by cycle 1 of chemotherapy, the patient has not had sufficient time for vaginal cuff healing. Thus, most of my brachytherapy in these interdigitated scenarios is done between cycles 2 and 3 or between cycles 3 and 4. If physician/departmental scheduling or patient intolerance of chemotherapy is an issue, then I will allow treatment between later cycles of chemotherapy.

I am not aware of any data showing VCB after cycles 1 or 2 of chemo is better than after cycles 3-6 (similar to say how ...