MRI characteristics and extent of tumor removal in cervical dumbbell-shaped schwannomas
Description
Data of 72 patients who underwent surgical treatment for cervical dumbbell-shaped schwannomas were retrospectively reviewed. Tumor level (p = 0.009, Pearson’s chi-square test), VA involvement (p < 0.001, linear-by-linear association test), and SI on T2-weighted images (T2-WIs) (p = 0.006, Fisher’s exact test) were statistically significantly different between the GTR and STR groups. Univariate analysis demonstrated that upper level (odds ratio [OR] 4.00, 95% confidence interval [CI] 1.50-10.69; p = 0.006), pushed VA (OR 0.11, 95% CI 0.03-0.45; p = 0.002), encased VA (OR 0.02, 95% CI 0.01-0.14; p < 0.001), and Hyper-SI on T2-WI (OR 12.46, 95% CI 1.49-104.51; p = 0.020) were significant predictors for GTR.
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Steps to reproduce
We focused on the relationship between preoperative magnetic resonance imaging (MRI) features and the extent of tumor removal. The MRI features evaluated were tumor level, tumor extension, T2 signal intensity, and degree of vertebral artery (VA) involvement.