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Differentiation between benign and malignant colon tumors using fast dynamic gadolinium-enhanced MR colonography; a feasibility study.

Abstract：

BACKGROUND:Colorectal cancer will present itself as a bowel obstruction in 16-23% of all cases. However, not all obstructing tumors are malignant and the differentiation between a benign and a malignant tumor can be difficult. The purpose of our study was to determine whether fast dynamic gadolinium-enhanced MR imaging combined with MR colonography could be used to differentiate a benign from a malignant obstructing colon tumor. METHODS:Patients with benign colon tumor stenosis, based on diverticulitis, were asked to participate in the study. The same number of patients with verified colorectal cancer was included. Both groups had to be scheduled for surgery to be included. Two blinded observers analyzed the tumors on MR by placing a region of interest in the tumor and a series of parameters were evaluated, e.g. wash-in, wash-out and time-to-peak. RESULTS:14 patients were included. The wash-in and wash-out rates were significantly different between the benign and malignant tumors, and a clear distinction between benign and malignant disease was therefore possible by looking only at the MR data. Furthermore, MR colography evaluating the rest of the colon past the stenosis was possible with all patients. CONCLUSION:The results showed the feasibility of using fast dynamic gadolinium-enhanced MR imaging to differentiate between benign and malignant colonic tumors. With a high intra-class correlation and significant differences found on independent segments of the tumor, the method appears to be reproducible. Furthermore, the potential is big in performing a full preoperative colon evaluation even in patients with obstructing cancer. TRIAL NUMBER:NCT00114829.

journal_name

Eur J Radiol

journal_title

European journal of radiology

authors

Achiam MP,Andersen LP,Klein M,Løgager V,Chabanova E,Thomsen HS,Rosenberg J

doi

10.1016/j.ejrad.2009.03.033

subject

Has Abstract

pub_date

2010-06-01 00:00:00

pages

e45-50

issue

3

eissn

0720-048X

issn

1872-7727

pii

S0720-048X(09)00150-8

journal_volume

74

pub_type

杂志文章

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