直肠灌水后CT增强显像在直肠癌诊断中的应用价值

Diagnostic value of enhanced CT imaging after the rectal irrigation in rectal cancer

目的探讨直肠灌水后CT增强显像在直肠癌诊断中的应用价值。方法选择临床高度怀疑直肠癌的病例46例,先用生理盐水进行直肠灌注后,再行盆腔的CT增强扫描,利用三维重建技术对直肠病变进行诊断,并将所得结果与肠镜活检病理或术后病理结果对照,以判断直肠灌水后CT增强显像对直肠癌诊断的准确率,以及评估直肠肿块局部浸润情况与术后病理的符合率。结果46例病例中,CT增强显像阳性为43例,阴性为3例。其中CT显像病变侵犯肌层,但未突破浆膜层25例;突破浆膜层10例;周围组织侵犯8例;病理确诊为直肠癌有42例。CT增强显像假阴性1例,假阳性2例,CT增强融合显像对直肠癌诊断的准确性为93.48%,局部侵犯的符合率为98%。结论直肠灌注后CT增强融合显像在直肠癌的诊断及判断肿瘤局部侵犯情况中具有重要的临床价值。

Objective:To investigate the diagnostic value of enhanced CT imaging after rectal irrigation in rectal cancer.Methods: At first,46 cases of clinical highly suspected rectal cancer received rectal infusion with normal saline,then received the pelvic enhanced CT scanning.The results of CT scanning were compared with the pathological findings.Results: The results of CT scanning showed that 43 cases were rectal cancer,but the pathological findings showed 42 cases were diagnosed to be rectal cancer,the diagnostic accuracy rate was 98%.Conclusion: Enhanced CT imaging after rectal perfusion has important clinical value on the local tumor.