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Fig. 14 | Insights into Imaging

Fig. 14

From: Osteoid osteoma: the great mimicker

Fig. 14

Osteoid osteoma versus glomus tumor. (af) Male, 19 years old, presenting with second toe clubbing and night pain (a). Sagittal T1 (b) and sagittal (c) and axial (d) T2FS MR images showed diffuse nail bed thickening (dotted arrows), with no defined nodule, as well as a low signal cortical/juxtacortical nodule at the distal phalanx (arrows), accompanied by bone marrow edema (arrowhead). A CT scan (e, f) was performed, and the findings revealed a sclerotic nodule corresponding to an OO nidus (arrows), with minimal reactional surrounding sclerosis. (gk) Female, 53 years old, presenting with pain on the 4th finger that radiated to the forearm. Sagittal, coronal, axial T2 FS, axial T1 and T1 FS GD MR images depicted a subungual nodular well-defined lesion (arrow) with remodeling of the subjacent phalanx cortex (dotted arrow) and homogeneous enhancement after gadolinium injection (k). Note that diffuse thickening of the nail bed or phalanx sclerosis was absent.

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