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. 2023 May 19;11:1200877. doi: 10.3389/fped.2023.1200877

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© 2023 Giraudo, Fichera, Pilati, Cortinovis, Cavallin, Bertin, Zuliani and Cecchin.

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 10-year-old boy with left hip pain 2 weeks after a mild respiratory COVID-19 infection with negative radiographs (A) but joint effusion at ultrasound (B) then confirmed at the MR [yellow arrow on the axial T2W turbo spin echo sequence in (C)] which also demonstrated synovial enhancement after contrast medium injection [yellow arrow in (D)].