title: Comparison of late gastrointestinal and genitourinary toxicity of prostate cancer patients undergoing intensity-modulated versus conventional radiotherapy using localized fields.
abstract: To compare late genitourinary (GU) and gastrointestinal (GI) toxicity of radiotherapy (RT) to localized fields for prostate cancer delivered using intensity-modulated RT (IMRT) versus conventional RT (ConvRT). The records of 461 patients were reviewed; 355 patients received IMRT and 106 received ConvRT. Late GU and GI toxicity were compared. Late GU toxicity rates were not significantly different (P=0.166); however, late GI toxicity rates were lower with IMRT (P=0.001). Regression analyses demonstrated that only IMRT use (P=0.006) predicted reduction in late GI toxicity but no factors correlated with late GU toxicity. IMRT did not influence late GU toxicity but was associated with a reduction of late GI toxicity over ConvRT.
authors.affiliation: Department of Radiation and Cellular Oncology, University of Chicago, Chicago, IL 60637, USA. jani_1969@yahoo.com
authors.forename: A B
authors.initials: AB
authors.lastname: Jani
authors.forename: A
authors.initials: A
authors.lastname: Su
authors.forename: D
authors.initials: D
authors.lastname: Correa
authors.forename: J
authors.initials: J
authors.lastname: Gratzle
mesh_terms: D000368:Aged; D002277:Carcinoma / Q000150:complications / Q000532:radiotherapy*; D005500:Follow-Up Studies; D041981:Gastrointestinal Tract / Q000528:radiation effects*; D006801:Humans; D008297:Male; D011471:Prostatic Neoplasms / Q000150:complications / Q000532:radiotherapy*; D011832:Radiation Injuries / Q000473:pathology*; D050397:Radiotherapy, Intensity-Modulated / Q000009:adverse effects*; D012189:Retrospective Studies; D013997:Time Factors; D014566:Urogenital System / Q000528:radiation effects*