Small deep soft tissue tumors often results in dilemmatic clinical situation and raise clinical concern that deep location is one of risk factor for malignancy. We conducted this study hypothesizing that DWI with ADC value as well as conventional MRI parameters could help differentiation of benignity and malignancy for small deep soft tissue tumors; univariable and multivariable analyses were performed for all tumors and non-myxoid non-hemosiderin tumors. Although only small tumors were enrolled, lesion size was still important for differentiation of benign and malignant soft tissue tumors, being the most significant parameter in non-myxoid non-hemosiderin group.
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