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Ivory vertebra appearing photopenic on Tc-99m MDP bone scan: demonstration by SPECT/CT
Nicolas Aide1, Sylvie Costo, Stéphanie Lheureux
1Nuclear Medicine Department, François Baclesse Comprehensive Cancer centre, Caen, France. n.aide@baclesse.fr
Abstract:
We report the case of a 72-year-old man with prostate cancer, in whom Tc-99m MDP bone scintigraphy revealed a "superscan" pattern, except in a dorsal vertebra, which appeared photopenic. A low-dose SPECT/CT acquisition demonstrated that the lack of tracer uptake corresponded to a blastic lesion with no lytic component. Surprisingly, the cold vertebra appeared as an "ivory vertebra" on the CT part of the SPECT/CT acquisition. In the present case, the photopenic appearance is thought to be due to a concomitant blastic lesion and spine infarct.
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