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. 2020 Jan 31;7:2. doi: 10.3389/fmed.2020.00002

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Copyright © 2020 Xiao, Mao and Li.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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(A) Computed tomography revealed a low-density mass around the left renal artery. (B) Magnetic resonance imaging revealed an isointense mass with a hyperintense signal at the right lumbar psoas muscle.