Ahmetoğlu Ali, Cansu Ayşegül, Baki Duygu, Kul Sibel, Cobanoğlu Umit, Alhan Etem, Ozdemir Feyyaz
Department of Radiology, Karadeniz Technical University, Farabi Hospital, Trabzon, Turkey.
Abdom Imaging. 2011 Feb;36(1):31-7. doi: 10.1007/s00261-009-9591-y.
To evaluate the accuracy of MDCT with multiplanar reconstruction in the preoperative local staging of rectal tumor.
Thirty-seven patients with rectal tumor underwent preoperative MDCT. Two radiologists evaluated the depth of tumor invasion (T staging), regional lymph node involvement (N staging) and mesorectal fascia involvement on axial, sagittal, and coronal multiplanar reconstruction images in consensus. MDCT findings were compared with pathologic results, which served as the reference standard. Sensitivity, specificity, positive predictive value, negative predictive value, and accuracy were assessed.
Overall accuracy was 86% in T staging, 84% in N staging, 89% in International Union Against Cancer (UICC) Staging, and 94.5% in the prediction of mesorectal fascia involvement.
MDCT with multiplanar reconstruction is an accurate technique in the preoperative local staging of rectal tumor.
评估多层螺旋CT（MDCT）多平面重建在直肠癌术前局部分期中的准确性。
37例直肠癌患者术前行MDCT检查。两名放射科医生共同在轴位、矢状位和冠状位多平面重建图像上评估肿瘤浸润深度（T分期）、区域淋巴结受累情况（N分期）以及直肠系膜筋膜受累情况。将MDCT检查结果与作为参考标准的病理结果进行比较。评估敏感性、特异性、阳性预测值、阴性预测值和准确性。
T分期的总体准确率为86%，N分期为84%，国际抗癌联盟（UICC）分期为89%，直肠系膜筋膜受累预测准确率为94.5%。
MDCT多平面重建是直肠癌术前局部分期的一种准确技术。
