Widening of the diploic space

Changed by Daniel J Bell, 8 Oct 2020

Updates to Article Attributes

Body was changed:

Widening of the diploic space refers to expansion of the cancellous (spongy) bone between the inner and outer tables of the calvaria. The diploic space is the medullary cavity of the skull, and a location of normal physiologic hematopoiesis in adults. Thus, expansion of this structure most commonly occurs in the setting of chronically increased intramedullary hematopoiesis. The widened appearance is most commonly bilateral.

Causes

Most commonly caused by systemic pathologies such as:

  • -<a href="/articles/paget-disease-bone">Paget disease</a> (<a href="/articles/tam-o-shanter-sign-skull">tam o' shanter sign</a>)</li>
  • +<a href="/articles/paget-disease-bone">Paget disease</a> (<a href="/articles/tam-o-shanter-sign-skull-1">Tam o' Shanter sign</a>)</li>

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