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- W2386002364 abstract "Objective:To evaluate the correlation between tumor grades and tumor enhancement in oligodendroglial tumors.Methods:Findings from 31 surgical pathologically proved oligodendroglial tumors in 30 patients were retrospectively analyzed and compared.Contrast enhanced ratios (CERs) were measured;Mean CERs were compared between both the grades and among the subtypes.Enhancement patterns were also observed.Results:The 31 tumors include 24 pure oligodendrogliomas (9 grade Ⅲ,15 grade Ⅱ) and 7 mixed oligoastrocytomas (4 grade Ⅲ,3 grade Ⅱ).Mean CERs were 1.11±0.11 for OD grade Ⅱ,1.37±0.31 for OA grade Ⅱ,1.65±0.18 for OD grade Ⅲ and 2.16±0.32 for OA grade Ⅲ.Positive correlation was observed between CERs and tumor subtypes (P=0.000),statistical difference was noted between the two grades (P=0.002).The cutoff value of CER=1.30 gives the sensitivity 85%,specificity 78% for differentiation of the two grades.3 enhancement patterns were observed in 19 of the 31 tumors (grade Ⅲ vs grade Ⅱ:11/13 vs 8/18):dot-and nodular-like enhancement (grade Ⅲ vs grade Ⅱ:7/13 vs 7/18),ring enhancement (9/13 vs 2/18),bulk enhancement (2/13 vs 0).Conclusion:Tumor enhancement was more common in high grade oligodendroglial tumors.An upward tendency was noted of mean CERs in order of OD grade Ⅱ,OA grade Ⅱ,OD grade Ⅲ,OA grade Ⅲ.Nodular-like enhancement was characteristic of oligodendroglial tumors.Ring enhancement may indicate high grade of the tumor." @default.
- W2386002364 created "2016-06-24" @default.
- W2386002364 creator A5088890402 @default.
- W2386002364 date "2009-01-01" @default.
- W2386002364 modified "2023-09-26" @default.
- W2386002364 title "Oligodendroglial Tumors:The Correlation between Tumor Grades and Tumor MRI Enhancement" @default.
- W2386002364 hasPublicationYear "2009" @default.
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