OCAD MSK

History

Pain for 6 months

Figure 1 for case Osteoid osteoma ( RID4005 ) — Figure 1

Figure 2 for case Osteoid osteoma ( RID4005 ) — Figure 2

Figure 3 for case Osteoid osteoma ( RID4005 ) — Figure 3

Figure 4 for case Osteoid osteoma ( RID4005 ) — Figure 4

Figure 5 for case Osteoid osteoma ( RID4005 ) — Figure 5

Figure 6 for case Osteoid osteoma ( RID4005 ) — Figure 6

Discussion

The nidus is intracortical and has a sclerotic sequestrum on CT. The nidus on MRI is a dark intracortical focus now indicated by white arrows. The separate adjacent subcortical fibrocystic change is T2 bright. Patient has FAI and labral tear AND an intra-cortical osteoid osteoma, responsible for the bone marrow edema and synovitis.

Diagnosis

Osteoid osteoma ( RID4005 )

Hilary Umans, MD

Courtesy

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