" /> inverted Napoleon hat sign - CISMeF





Preferred Label : inverted Napoleon hat sign;

RADLEX synonyms : bow sign; Napoleon hat sign;

Definition : Anterior body of L5 vertebra is anteriorly displaced over top of sacrum. Transverse processes resemble the brim, superimposition of L5 and sacrum resemble dome. Indicates spondylolisthesis at the lumbosacral junction.;

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Anterior body of L5 vertebra is anteriorly displaced over top of sacrum. Transverse processes resemble the brim, superimposition of L5 and sacrum resemble dome. Indicates spondylolisthesis at the lumbosacral junction.

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07/07/2025


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