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Preoperative evaluation of lymphovascular invasion using high-resolution pelvic magnetic resonance in patients with rectal cancer: a 2-year follow-up study

Authors
 Yaena Kim ; Jae-Joon Chung ; Joo Hee Kim ; Eun-Suk Cho ; Jeong-Sik Yu 
Citation
 Journal of Computer Assisted Tomography, Vol.37(4) : 583~588, 2013 
Journal Title
 Journal of Computer Assisted Tomography 
ISSN
 0363-8715 
Issue Date
2013
Abstract
OBJECTIVES: The objectives of this study were to preoperatively evaluate lymphovascular invasion (LVI) using pelvic magnetic resonance (MR) in patients with rectal cancer and to determine the correlation with distant metastasis rate. METHODS: If the mesorectal perivascular infiltrative signal was visible on pelvic MR imaging, the possibility of LVI was recorded. Distant metastatic lesions were also recorded at the time of the initial diagnostic workup and over a 2-year follow-up period. RESULTS: Fifteen (68.2%) of the 22 LVI patients showed mesorectal perivascular infiltrative signals on pelvic MRI. For the prediction of LVI in rectal cancer, MR had a sensitivity of 68.2% and a specificity of 93.2. The initial distant metastasis rate was significantly higher in patients with MR LVI (52%) than in patients without MR LVI (5.7%) (P < 0.0001). CONCLUSIONS: On pelvic MR, the presence of mesorectal perivascular infiltration by nodes is a specific sign of LVI in rectal cancer, and the presence of LVI is a predictor of distant metastasis.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/88008
DOI
10.1097/RCT.0b013e31828d616a
Appears in Collections:
1. 연구논문 > 1. College of Medicine > Dept. of Radiology
Yonsei Authors
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Link
 http://ovidsp.ovid.com/ovidweb.cgi?T=JS&CSC=Y&NEWS=N&PAGE=fulltext&AN=00004728-201307000-00017&LSLINK=80&D=ovft
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