Additional pediatric resources: GeneralPediatrics.com | PediatricEducation.org | SearchingPediatrics.com
Michael P. D'Alessandro, M.D.
Peer Review Status: Internally Peer Reviewed
Etiology/Pathophysiology:
The parietal bones often have small defects, called parietal foramen,
that are 1mm or less in diameter, and that allow emissary veins to
join the sagittal sinus interiorly with the occipital venous branches
externally. Occasionally these defects may be large, as the result of
irregular ossification of the membranous bone. Over time they become
smaller and obliterate. They should be considered a normal variant.
Pathology:
Not applicable
Imaging Findings:
Large posterior defect in parietal bones, may be unilateral or
bilateral, may be symmetrical.
DDX:
References:
See References Chapter.
Additional pediatric resources: GeneralPediatrics.com | PediatricEducation.org | SearchingPediatrics.com
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