Cotton wool appearance of bone

The cotton wool appearance is a plain film sign of Paget disease and results from thickened, disorganized trabeculae which lead to areas of sclerosis in a previously lucent area of bone, typically the skull. These sclerotic patches are poorly defined and fluffy.

See also

Other Paget disease related signs:


Inspired signs
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rID: 1174
Section: Signs
Tags: refs, cases
Synonyms or Alternate Spellings:
  • Cotton wool bone
  • The Cotton wool appearance of bone
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    Figure 1: cotton
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    Case 1: lateral skull film
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    Case 2
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    Case 3
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