Use of expanders for protection of viscera during irradiation of pelvic tumors in children.

The authors describe a new technique for radioprotection of pelvic viscera by placement of expanders in the subperitoneal area before irradiation of pelvic tumors. They use round shape sub-cutaneous expanders, the volume corresponding to children's weight. Seven patients were treated with excellent results, and minor complications: 2 rectitis due to unsatisfactory displacement of rectum by the balloon. There were no complications related to the device itself. The prosthesis was easy to withdraw. This method seems a safe and effective technique in protecting viscera.