title: Ivory vertebra appearing photopenic on Tc-99m MDP bone scan: demonstration by SPECT/CT.
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.
authors.affiliation: Nuclear Medicine Department, François Baclesse Comprehensive Cancer centre, Caen, France. n.aide@baclesse.fr
authors.forename: Nicolas
authors.initials: N
authors.lastname: Aide
authors.forename: Sylvie
authors.initials: S
authors.lastname: Costo
authors.forename: Stéphanie
authors.initials: S
authors.lastname: Lheureux
authors.forename: Nejla
authors.initials: N
authors.lastname: Allouache
authors.forename: Stéphane
authors.initials: S
authors.lastname: Bardet
mesh_terms: D000368:Aged; D001842:Bone and Bones / Q000000981:diagnostic imaging*; D018450:Disease Progression; D006801:Humans; D008297:Male; D009362:Neoplasm Metastasis; D010641:Phenotype; D011471:Prostatic Neoplasms / Q000175:diagnosis / Q000000981:diagnostic imaging* / Q000473:pathology*; D011877:Radionuclide Imaging; D013669:Technetium Tc 99m Medronate; D015899:Tomography, Emission-Computed, Single-Photon / Q000379:methods*; D014057:Tomography, X-Ray Computed / Q000379:methods*; D051598:Whole Body Imaging
chemical_list: D013669:Technetium Tc 99m Medronate