From the case:
Presacral space (illustration)
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Anatomic view of pre-sacral boundaries (Gray`s Anatomy - public domain).
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Sagittal view of pre-sacral space on CT studies.
Case Discussion
The upper limits of normal width of presacral space is 15 mm in patients not older than 45 years. Usually utilized on lower GI barium enema studies and simple plain film x-rays.
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