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. 2022 May 26;10:847776. doi: 10.3389/fped.2022.847776

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Copyright © 2022 Liu, Zhang and Qiu.

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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Callus formation. The infant was G₁P₁, with a gestational age of 39⁺⁵ weeks, vaginal delivery, and a birth weight of 3,700 g. The infant was admitted to the hospital on the 7th day after birth due to jaundice. Physical examination revealed local swelling and callus formation on the medial segment of the right clavicle. Ultrasound examination showed interrupted continuity and local bone tissue proliferation forming a callus at this fracture site (within the dashed line).