PURPOSE: To report on: 1. Late radiotherapy-induced lower intestinal toxicity (RILIT) after intensity-modulated radiotherapy (IMRT) for prostate cancer. 2. The correlation between late RILIT and volume parameters of the rectum, sigmoid colon and small bowel. MATERIALS AND METHODS: We included 241 patients with a follow-up of >or=18 months for this analysis. Late RILIT consisted of 8 different symptoms, comprising the 5 symptoms from the RTOG toxicity score supplemented with urgency, fecal incontinence and anal pain. Late RILIT and late RTOG toxicity were scored prospectively and correlated with: 1. Different rectum, sigmoid colon and small bowel volume parameters. 2. Patient-related morbidity. We calculated the median, quartile and percentiles for the different volume parameters and correlated them with grade 1-3 late RILIT. RESULTS: Median follow-up was 42 months. Three patients developed grade 3 red blood loss. We registered grade 2 RILIT and RTOG toxicity in 13% and 10%, respectively, the most frequent grade 1 symptom being fecal urgency. The intermediate rectal volume parameters were significantly correlated with late RILIT. We were able to calculate cut-off dose-volume histograms (DVHs) that predict for grade 0-2 RILIT. CONCLUSIONS: After IMRT for prostate cancer, the overall incidence of grade >or=2 RILIT is low. Cut-off DVHs can be used for patient counseling.
PURPOSE: To report on: 1. Late radiotherapy-induced lower intestinal toxicity (RILIT) after intensity-modulated radiotherapy (IMRT) for prostate cancer. 2. The correlation between late RILIT and volume parameters of the rectum, sigmoid colon and small bowel. MATERIALS AND METHODS: We included 241 patients with a follow-up of >or=18 months for this analysis. Late RILIT consisted of 8 different symptoms, comprising the 5 symptoms from the RTOG toxicity score supplemented with urgency, fecal incontinence and anal pain. Late RILIT and late RTOG toxicity were scored prospectively and correlated with: 1. Different rectum, sigmoid colon and small bowel volume parameters. 2. Patient-related morbidity. We calculated the median, quartile and percentiles for the different volume parameters and correlated them with grade 1-3 late RILIT. RESULTS: Median follow-up was 42 months. Three patients developed grade 3 red blood loss. We registered grade 2 RILIT and RTOG toxicity in 13% and 10%, respectively, the most frequent grade 1 symptom being fecal urgency. The intermediate rectal volume parameters were significantly correlated with late RILIT. We were able to calculate cut-off dose-volume histograms (DVHs) that predict for grade 0-2 RILIT. CONCLUSIONS: After IMRT for prostate cancer, the overall incidence of grade >or=2 RILIT is low. Cut-off DVHs can be used for patient counseling.
Authors: Nicholas G Zaorsky; Amy S Harrison; Edouard J Trabulsi; Leonard G Gomella; Timothy N Showalter; Mark D Hurwitz; Adam P Dicker; Robert B Den Journal: Nat Rev Urol Date: 2013-09-10 Impact factor: 14.432
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Authors: Katrien Vandecasteele; Wilfried De Neve; Werner De Gersem; Louke Delrue; Leen Paelinck; Amin Makar; Valérie Fonteyne; Carlos De Wagter; Geert Villeirs; Gert De Meerleer Journal: Strahlenther Onkol Date: 2009-12 Impact factor: 3.621
Authors: Ben G L Vanneste; Lien Van De Voorde; Rogier J de Ridder; Evert J Van Limbergen; Philippe Lambin; Emile N van Lin Journal: Int J Colorectal Dis Date: 2015-07-23 Impact factor: 2.571