Comparison of Preoperative and Postoperative Radiotherapy and Capecitabine in Locally Advanced Rectal Cancer

Preoperative chemoradiation with conventional radiotherapy (46 Gy in 23 fractions to the whole pelvis followed by a boost dose of 4 Gy in 2 fractions) and oral fluoropyrimidine (capecitabine 825 mg/m2 twice per day without weekend breaks during whole radiotherapy period)

Postoperative radiotherapy with conventional radiation schedule (50 Gy in 25 fractions to the whole pelvis) and oral fluoropyrimidine (capecitabine 825 mg/m2 twice per day without weekend breaks during whole radiotherapy period)