Application of MRI combined with intraluminal filling with coupling agent in preoperative evaluation of rectal cancer
Objective To investigate the application value of MRI combined with intraluminal filling with coupling agent in preoperative evaluation of rectal cancer.Methods A total of 78 patients with rectal cancer who were confirmed by proctoscopy and pathology and planned to undergo surgical treatment from February 2021 to February 2023 were selected as the study subjects.All patients underwent rectal MRI examination before surgery and after intraluminal filling with coupling agent.Postoperative pathological results were used as the gold standard to evaluate the overall coincidence rates of MRI and MRI combined with intraluminal filling with coupling agent for T and N staging of rectal cancer.Results Surgical and pathological results showed that among the 78 patients with rectal cancer,there were 10 cases in Tl stage,16 cases in T2 stage,38 cases in T3 stage,14 cases in T4 stage,17 cases in N0 stage,36 cases in N1 stage,and 25 cases in N2 stage.Compared with surgical and pathological results,MRI combined with intraluminal filling with coupling agent diagnosed 10 cases in Tl stage,13 cases in T2 stage,35 cases in T3 stage and 14 cases in T4 stage,with a diagnostic accuracy rate of 92.31％for T stage.MRI diagnosed 10 cases in Tl stage,11 cases in T2 stage,30 cases in T3 stage,and 11 cases in T4 stage,with a diagnostic accuracy rate of 79.49％for T stage.The accuracy of MRI combined with intraluminal filling with coupling agent for diagnosing T stage was higher than that of MRI(P＜0.05).MRI combined with intraluminal filling with coupling agent diagnosed 16 cases in N0 stage,31 cases in N1 stage and 21 cases in N2 stage,with a diagnostic accuracy rate of 87.18％for N stage.MRI diagnosed 13 cases in N0 stage,26 cases in N1 stage and 19 cases in N2 stage,with a diagnostic accuracy rate of 74.36％for N stage.The accuracy of MRI combined with intraluminal filling with coupling agent for diagnosing N stage was higher than that of MRI(P＜0.05).Conclusions MRI combined with intraluminal filling with coupling agent can accurately stage and evaluate rectal cancer before surgery,thus providing reference for clinical diagnosis and treatment.
Rectal cancerMagnetic resonance imagingIntraluminal filling with coupling agentPreoperative evaluation
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