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KMID : 1148920230570060301
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Nuclear Medicine and Molecular Imaging
2023 Volume.57 No. 6 p.301 ~ p.305
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The ‘Eye Mask Sign’ in Fibrous Dysplasia on 99mTc-MDP Skeletal Scintigraphy and SPECT/CT
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Sanchay Jain
Deepa Singh
Suruchi Jain
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Abstract
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Fibrous dysplasia (FD) is a fibro-osseous disorder that manifests with distinct or overlapping clinical patterns. FD may be monostotic or polyostotic and commonly associated with syndromes such as McCune-Albright syndrome and Mazabraud syndrome. We report a case of polyostotic FD with bilateral involvement of craniofacial bones in a distinct pattern and propose this characteristic appearance as the ‘eye mask sign’ on 99mTc-Methylene Diphosphonate (MDP) skeletal scintigraphy and SPECT/CT. Other unusual skeletal scintigraphic features noted in this case are also described (Figs. 1, 2, and 3).
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KEYWORD
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The ‘eye mask’ sign, Fibrous dysplasia, 99mTc-MDP bone scan, Atypical skull involvement in FD
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