Papers of The 3rd Japan Scar Workshop

10. Risk of Carcinogenesis on Radiation Therapy for Keloids

Rei Ogawa1, Sumiko Yoshitatsu2, Tsuguhiro Miyashita3, Ken Yoshida4

1:Deaprtment of Plastic, Reconstructive and Aesthetic Surgery, Nippon Medical School, Tokyo, Japan
2:Department of Plastic Surgery, Osaka National Hospital, Osaka, Japan
3:Department of Radiology, Nippon Medical School, Tokyo, Japan
4:Department of Radiology, Osaka National Hospital, Osaka, Japan

An important concern associated with radiation therapy is the risk of inducing malignant tumors. Thus, we studied previous papers on malignant tumors associated with radiation therapy for keloids. Five papers were examined, however, whether appropriate dose of radiation and appropriate protection of surrounding tissues including mammary gland and thyroid were used for these cases is unclear. With regard to the indication of radiation therapy for keloids, there is a questionnaire study on radiation oncologists in 508 facilities worldwide. In the results, 78% of the facilities responded that radiation therapy is an accepted indication. With regard to USA and Canada, over 90% of 77 facilities accepted radiation therapy for keloids. Generally, surgeons tend to avoid radiation therapy for benign tumors including keloids for fear of inducing a malignant tumor, but it is suggested that surgeons should have a closer discussion with a radiation oncologist and consider radiation therapy as a treatment choice for keloid.
Copyright(C) 2007 Japan Scar Workshop All rights reserved.