On MR, incidental note is made of a focal area of decreased signal on both the T1 and T2 weighted images within the right iliac bone at the level of S2.
This corresponds to a approximate 2.2 X 1.7cm sclerotic density in the right ilium just lateral to the right SI joint on plain radiograph.
There is no associated increased radiotracer uptake in the region of this lesion on bone scan.
Case Diagnosis: Enostosis (also known as a bone island) :: By: Imaging findings are diagnostic
Enostosis (also known as a bone island) :: Imaging findings are diagnostic Original Source: Michael J Reiter Submitted by: Michael J Reiter - Affiliation: National Capital Consortium
Approved By: Albert V Porambo - Affiliation: Civilian Medical Center
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