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. 2018 Dec 10;11:3129–3140. doi: 10.2147/JPR.S186878

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© 2018 Hulens et al. This work is published and licensed by Dove Medical Press Limited

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(A) Sacral nerve root sheath dilations can be observed, and these appear to be very similar to the optic nerve root sheath dilations. (B) A more lateral view of the sacrum showing significant dilation (Tarlov cyst) of nerve root S3.