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. 2016 Apr 29;6:17. doi: 10.4103/2156-7514.181493

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Copyright: © 2016 Journal of Clinical Imaging Science

This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as the author is credited and the new creations are licensed under the identical terms.

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68-year-old woman with a left total hip arthroplasty and concern for a malignant left-sided periarticular mass. (a) Axial T1-weighted magnetic resonance image shows a focal left-sided periarticular mass (arrow) which hyperintense to skeletal muscle. (b) Contrast-enhanced axial T1-weighted magnetic resonance image shows similar appearance to the noncontrast sequence, although the T1 hyperintense nature of the mass (arrow) limits diagnostic sensitivity for detection of enhancement. (c) Axial subtraction sequence magnetic resonance image (produced by subtraction of the pre- and post-T1-weighted sequences) shows no enhancement of the mass (arrow).