7、y:targetvolumeincludingthetumorbedandregionallymphaticdrainagearea,theradiationdoseis45GY/25fractions.Afterchemoradiotherapy,thosepatientsweretreated with 4to6cyclesXeloxregimen.Efficacyandtoxicitywillbeobserved.Results:The1-yearoverallsurvival,relapse-freesurvi