Parietal skull vault thinning

Case contributed by Chris O'Donnell
Diagnosis certain

Presentation

Presents for assessment of head injury following a fall. Incidental finding.

Patient Data

Age: 95 years
Gender: Female

Gross symmetrical thinning of the parietal bones (with only the inner table remaining).  Note the abrupt transition (arrows) to relatively normal vault thickness.

Case Discussion

This finding is suprisingly common in the elderly, although the etiology is obscure.  It is usually symmetrical.

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