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Postoperative complications in patients irradiated pre-operatively for rectal cancer: report of a randomised trial comparing short-term radiotherapy vs chemoradiation.

Bujko K, Nowacki MP, Kepka L, Oledzki J, Bebenek M, Kryj M,

Department of Radiotherapy, Mari Skiodowska-Curie Memorial Cancer Center and Institute of Oncology, Warsaw, Poland. bujko@coi.waw.pl

OBJECTIVE: The primary outcome was sphincter preservation. No benefit was found with chemoradiation. The aim of this report is to analyse postoperative complications, which were the secondary outcome. MATERIAL AND METHODS: Patients with resectable T3-4 low rectal carcinoma were randomised to receive either pre-operative 5 x 5 Gy irradiation with subsequent total mesorectal excision (TME) performed within 7 days or chemoradiation (50.4 Gy, 1.8 Gy per fraction plus bolus 5-fluorouracil and leucovorin) followed by TME after 4-6 weeks. RESULTS: Three hundred and five patients (153 in 5 x 5 Gy group and 152 in chemoradiation group) were analysed. The rates of patients with postoperative complications for the 5 x 5 Gy group and for the chemoradiation group were 27 vs 21%, respectively (P = 0.27). If the values were expressed in terms of number of complications, the rates were 31 vs 22%, respectively (P = 0.06). The corresponding values for severe complications were 10 vs 11% (P = 0.85) of patients with complications and 12 vs 11% (P = 0.85) of events. CONCLUSION: The study did not demonstrate a statistically significant difference in the rate of postoperative complications after short-course pre-operative radiotherapy compared with full course chemoradiation.

Published 3 June 2005 in Colorectal Dis, 7(4): 410-6.
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