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Fig. 3 | Insights into Imaging

Fig. 3

From: Osteoid osteoma: the great mimicker

Fig. 3

Multicentric osteoid osteoma. A 26-year-old male handball player with lateral elbow and arm pain for 3 months. Orthopedists suspected lateral epicondylitis or a stress reaction. MRI T1 (a) and T2 FS (b) showed cortical thickening on the lateral supracondylar crest with corticoperiosteal edema (arrow) and small foci of intermediate signal intensity (dotted arrow), which raised the suspicion for OO. Scintigraphy (c) evidenced the double density sign (black arrow), which cannot be used to distinguish between single and multicentric OO. CT (d) detected two nidi (dashed arrows), confirming the diagnosis of multicentric OO

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