Application value of 3.0 T MRI in the preoperative staging and assessment of rectal cancer
- VernacularTitle:3.0TMRI在直肠癌术前分期和评估中的应用价值
- Author:
Sheng-chao JI
1
Author Information
1. Department of Medical Imaging, NO. 101 Hospital of PLA, Wuxi 214000, China
- Publication Type:Journal Article
- Keywords:
rectalneoplasms;
magneticresonanceimaging;
rectalcancer;
Tstaging;
preoperativeassessment;
pathology
- From:
Tianjin Medical Journal
2018;46(7):737-741
- CountryChina
- Language:Chinese
-
Abstract:
Objective Toexploretheapplicationvalueof3.0TMRIinthepreoperativestagingandassessmentof rectal cancer. Methods Data of 103 patients with rectal cancer diagnosed by biopsy was collected. The T staging, situationsofparacoliclymphaticmetastasisandfasciainvolvement,anddistanceoftumoredgetoanalvergewereestimated bypreoperativeMRI.ThestageandassessmentofpreoperativeMRIandpostoperativepathologywerecompared. Results MRIshowedthattherewere5patientswithstageT1-2,72patientswithstageT3,and26patientswithstageT4.And pathologicaldiagnosisshowedthattherewere5patientswithstageT1,16patientswithstageT2,60patientswithstageT3, and22patientswithstageT4.ThesensitivityandspecificityofstageT1-2,T3,andT4were23.8%and100%,96.7%and 67.4%,90.9%and92.6%,respectively.ResultsofMRIwerebroadlyconsonantwiththeresultsofpathology(Kappa=0.748, P＜0.01).MRIshowedthattherewere74patientswithparacoliclymphaticmetastasis.Pathologicaldiagnosisaftersurgery showedthattherewere66patientswithparacoliclymphaticmetastasis.ThesensitivityandspecificityforMRIdiagnosis were92.4%and64.9%,respectively(Kappa=0.601,P＜0.01).Amongthe18patientsreceivedanalresection,thedifferent valueofdistanceoftumoredgetoanalvergewaslessthanorequalto6mmbetweenMRIandpostoperativespecimen,with nosignificantdifference(P＞0.05).Totally65patientswithoutfasciainvolvementdiagnosedbyMRIwereconsonantwith theresultsofpostoperativepathology.Amongthe38patientswithfasciainvolvementdiagnosedbyMRI,12patientswere false-positive.Thesensitivityandspecificitywere100.0%and84.4%,respectively(Kappa=0.732, P=0.000).Conclusion 3.0TMRIcanprovideaccuratepreoperativestagingandevaluationforpatientswithrectalcancerbeforetheoperation,and helpinclinicaldiagnosisandtreatment.
