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Figure 2: T1-weighted (a), STIR (b) and post-contrast fat-suppressed T1-weighted (c) images of a malignant peripheral nerve sheath tumor demonstrate a well-circumscribed, T1 isointense and T2 hyperintense heterogeneous lesion abutting the left pelvic wall. The tumor displays central and peripheral enhancement as well as non-enhancing areas of necrosis. The corresponding [18]fluorodeoxyglucose positron emission tomography combined with computed tomography image (d) exhibits increased uptake at the area of the tumor

Figure 2: T1-weighted (a), STIR (b) and post-contrast fat-suppressed T1-weighted (c) images of a malignant peripheral nerve sheath tumor demonstrate a well-circumscribed, T1 isointense and T2 hyperintense heterogeneous lesion abutting the left pelvic wall. The tumor displays central and peripheral enhancement as well as non-enhancing areas of necrosis. The corresponding <sup>[18]</sup>fluorodeoxyglucose positron emission tomography combined with computed tomography image (d) exhibits increased uptake at the area of the tumor