Scimitar sacrum

Last revised by Craig Hacking on 6 Jan 2020

Scimitar sacrum, also known as sickle-shaped sacrum or hemisacral agenesis, is a unilateral, well-marginated, crescent-shaped defect in the lateral sacrum.

Pathology

The expansion of a meningocele causes scalloping and lateral displacement of the sacral plate.

Associations

Scimitar sacrum is pathognomonic for anterior sacral meningocele. Scimitar sacrum, anorectal malformation, and presacral mass represent the Currarino triad.

See also

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