Ivory vertebra appearing photopenic on Tc-99m MDP bone scan: demonstration by SPECT/CT.
June 28th, 2008 | by admin |Ivory vertebra appearing photopenic on Tc-99m MDP bone scan: demonstration by SPECT/CT.
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.
Aide N, Costo S, Lheureux S, Allouache N, Bardet S.
Nuclear Medicine Department, François Baclesse Comprehensive Cancer centre, Caen, France. n.aide@baclesse.fr