OCAD MSK

History

Leg pain in 16 y/o.

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

Discussion

16 y/o with target appearing osteoid osteoma surrounded by marked fusiform thickening of the lateral tibial diaphysis. I told the referring doctor that I wasnt sure (just kidding). Best I have ever seen. There is a nidus with central mineralization present.
An important differential consideration would be chronic osteomyelitis with sequestrum or cortical abscess if a clear cut nidus is not seen. The nidus is well seen in this case. Reference article.

Diagnosis

osteoid osteoma ( RID4005 )

Phillip Tirman, MD

Courtesy

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