External Validation of a Model for the Prediction of Radiation-Induced Acute GI Toxicity in Prostate Cancer Patients

External independent validation of a model (nomogram, Red J 71(4) 2008) for the prediction of acute GI toxicity (tox, within 1 month after treatment end) in prostate cancer patients (pts) treated with radical radiation therapy (RT). Grade ≥2 acute GI tox is the endpoint of the nomogram. It includes: mean rectal dose, presence of hemorrhoids, use of anticoagulants/antiaggregants, neoadjuvant androgen deprivation, diabetes and pelvic node...