28 September 2010 Last updated at 20:17 ET
By Michelle Roberts Health reporter, BBC News
Promising early trial findings show an intrauterine device (IUD) can deliver hormones to the womb lining to halt and even reverse cancer growth.
This can buy young women with the disease time to have children before undergoing a curative hysterectomy.
It has already enabled nine such women to conceive, Annals of Oncology journal reports.
The usual treatment for endometrial cancer is a total hysterectomy with the removal of the womb and ovaries, but this results in the end of the woman’s fertility.
Sometimes it is possible for patients to be given oral hormone therapy to slow down the growth of the cancer, but this can cause unpleasant side effects, including skin rashes, nausea and vomiting.
Delivering the hormones direct to the problem area with a coil can avoid some of these side effects.