Paget disease of the bone

Discussion:

Paget disease of the bone is usually polyostotic and asymmetric. In up to 75% of cases the pelvis is involved.

The classical triad of imaging findings are:

  • increased size of bone
  • thickening of the cortex
  • accentuation of the trabecular pattern

In the pelvis typically the trabeculae of the sacrum and ilium is thickened. The central portion of the ilium can undergo rarefaction and resemble a large lytic lesion. The iliopectineal line may be thickened.

Secondary degenerative joint disease with acetabular protrusio can occur.

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