Value of the high-resolution magnetic resonance imaging in diagnosis of extramural vascular invasion of rectal cancer

VernacularTitle:高分辨磁共振成像诊断直肠癌壁外血管侵犯价值的探讨
Author: Bo SHE ; Kunhua WU ; Yunhai JI ; Ying ZHAO ; Hongjiang ZHANG ; Jing CHEN ; Rui LIANG ; Wei SONG
Keywords: rectal cancer; extramural vascular invasion; magnetic resonance imaging
From: Journal of Practical Radiology 2016;32(12):1890-1893,1911
CountryChina
Language:Chinese
Abstract: Objective To investigate the value of high-resolution magnetic resonance imaging (HRMRI)in diagnosis of extramural vascular invasion (EMVI)of rectal cancer.Methods 33 patients with rectal cancer were reviewed preoperatively.The MRI findings of EMVI of all cases were scored and compared with the postoperative pathological results.Results The MRI EMVI scores were consistent with histopathology findings (k=0.324,P=0.039).The accuracy rate of MRI in diagnosis of EMVI was 66.7% (22/33).The MRI EMVI scores rose up with increased pT stage,meanwhile there was a high correlation between both (r=0.546).The percentage of MRI EMVI positive number was increased with elevated pT stage,and there was also a high correlation between both (r=0.469). ROC curve showed that MRI EMVI scoring was an effective method in diagnosis of rectal cancer EMVI (AUC=0.757).Conclusion HRMRI is a valuable method in diagnosis of EMVI of rectal cancer.