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. 2021 Apr 22;8:658538. doi: 10.3389/fmed.2021.658538

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Copyright © 2021 Caetano, Mascarenhas and Machado.

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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Normal variants and incidental findings of the sacroiliac joint (arrows). CT reconstructions with oblique orientation depict bilateral iliosacral complexes (A), the most common sacroiliac joint variant; right accessory sacroiliac joint (B); bilateral bipartite iliac bony plate (C); left iliac bone pneumatocyst (D). A patient with an incidental finding on the right sacroiliac joint seen on pelvic radiography performed MRI, which revealed an iliac bone cleft filled with fluid (E,F). Note the sclerosis of the symphysis pubis (E), compatible with osteitis pubis.