RESUMO
Objective To investigate the clinical efficacy and side effects of sequential and concurrent chemoradiation in the treatment of colorectal cancer.Methods 90 patients with colorectal cancer were divided into ⅡAof 21 cases (Ⅱa group),Ⅲa of 24 cases (Ⅲa group),Ⅱb of 23 cases (Ⅱb group),Ⅲb of 22 cases (Ⅲa group) according to the stage of the disease.Group Ⅱa and Ⅲa were treated by sequential chemoradiation therapy,Ⅱb group and Ⅲb group were treated by concurrent chemoradiation therapy.The clinical efficacy and toxicity were observed and compared.Results All patients were followed up at 1 and 3 years,no one lost and died.1-year and 3-year OS and PFS between group Ⅱa and group Ⅱb had no significant differences (P ＞ 0.05).1-year OS had no significant difference between Ⅲa group and Ⅲb group (P ＞ 0.05),1-year PFS,3-year OS and PFS had significant differences (x2 =3.993,4.224,4.304,all P ＜ 0.05).The incidence rate of toxicities between Ⅱa group +Ⅲa group (28.89％) and group Ⅱb+ Ⅲb (51.11％) had significant difference (x2 =4.629,P ＜ 0.05) ; while for each system specific incidence rate of side effects had no significant difference (P ＞ 0.05).Conclusion Compared with sequential chemotherapy in the treatment of colorectal cancer,concurrent chemoradiotherapy can effectively prolong overall survival and progression-free survival time,and can reduce the costs of treating,although increasing the treatment toxicity,but still within the acceptable range of patients,it has better application value in clinical.