Lymph node metastasis is observed in approximately 1/3 of patients with intermediate- to high-risk prostate cancer patients. There is a debate in the pelvic nodal irradiation in this group of patients. Although randomized trials demonstrated no benefit of pelvic nodal irradiation,1-3 some retrospective series have found pelvic field irradiation to be beneficial.4-6 After a technical analysis of the randomized trials with no benefit of pelvic nodal irradiation, it was clearly demonstrated that the lack of benefit is mainly due to lack of inadequate lymphatic coverage.