- Patients must have no evidence of extrapelvic disease; complete workup staging should be performed prior to initiation of therapy to rule-out presence of metastatic disease; this should include: computed tomography (CT) scan of the thorax with IV contrast, as well as a CT of the pelvis and abdomen with IV and oral (PO) contrast performed using multi-detector CT and equal or less than 5 mm slice thickness; if the patient is unable to tolerate contrast, then magnetic resonance imaging (MRI) with IV gadolinium should be performed; a chest x-ray should be done first, and if abnormal, then a CT scan of the chest should be done