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Comparison of elective inguinal node irradiation techniques in anal cancer

 Jihye Cha  ;  Jinsil Seong  ;  Woong Sub Koom  ;  Chang Geol Lee  ;  Ki Chang Keum 
 Radiation Oncology Journal, Vol.29(4) : 236-242, 2011 
Journal Title
 Radiation Oncology Journal 
Issue Date
PURPOSE: To compare photon thunderbird with deep match (technique 1) with 3-field technique with electron inguinal boost (technique 2) in acute skin toxicity, toxicity-related treatment breaks and patterns of failure in elective inguinal radiation therapy (RT) for curative chemoradiation in anal cancer. MATERIALS AND METHODS: Seventeen patients treated between January 2008 and September 2010 without evidence of inguinal and distant metastasis were retrospectively reviewed. In 9 patients with technique 1, dose to inguinal and whole pelvis area was 41.4 to 45 Gy and total dose was 59.4 Gy. In 8 patients with technique 2, doses to inguinal, whole pelvis, gross tumor were 36 to 41.4 Gy, 36 to 41.4 Gy, and 45 to 54 Gy, respectively. The median follow-up period was 27.6 and 14.8 months in group technique 1 and 2, respectively. RESULTS: The incidences of grade 3 radiation dermatitis were 56% (5 patients) and 50% (4 patients), dose ranges grade 3 dermatitis appeared were 41.4 to 50.4 Gy and 45 to 54 Gy in group technique 1 and 2, respectively (p = 0.819). The areas affected by grade 3 dermatitis in 2 groups were as follow: perianal and perineal areas in 40% and 25%, perianal and inguinal areas in 0% and 50%, and perianal area only in 60% and 25%, respectively (p = 0.196). No inguinal failure has been observed. CONCLUSION: Photon thunderbird with deep match technique and 3-field technique with electron inguinal boost showed similar incidence of radiation dermatitis. However, photon thunderbird with deep match seems to increase the possibility of severe perineal dermatitis
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1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Radiation Oncology (방사선종양학교실)
Yonsei Authors
금기창(Keum, Ki Chang) ; 금웅섭(Koom, Woong Sub) ; 성진실(Seong, Jin Sil) ; 이창걸(Lee, Chang Geol)
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