Multimodality Imaging Features of a Misleading Sacral Giant Cell Tumor in 18F-FDG PET/CT, Bone Scan, and MRI.
Fiche publication
Date publication
octobre 2020
Journal
Clinical nuclear medicine
Auteurs
Membres identifiés du Cancéropôle Est :
Dr JOUANNAUD Christelle
Tous les auteurs :
Dejust S, Jallerat P, Soibinet-Oudot P, Jouannaud C, Morland D
Lien Pubmed
Résumé
We report the case of an asymptomatic 66-year-old woman referred for initial staging of an invasive ductal breast carcinoma. Initial workup incidentally revealed a bone tumor of right sacral wing corresponding to a giant cell tumor (GCT). We present the imaging characteristics of GCT on Tc-HDP bone scan (doughnut sign), F-FDG PET/CT (intense and heterogeneous uptake of a prominent geographic lytic lesion with partial rupture of cortical), and MRI (hyposignal with gadolinium enhancement on T1-weighted images and heterogeneous hypersignal on T2-weighted images). GCT is a benign but locally aggressive primary bone tumor, constituting a pitfall and diagnostic challenge.
Mots clés
Aged, Bone Neoplasms, diagnostic imaging, Female, Fluorodeoxyglucose F18, Giant Cell Tumors, diagnostic imaging, Humans, Magnetic Resonance Imaging, Positron Emission Tomography Computed Tomography, Sacrum, diagnostic imaging
Référence
Clin Nucl Med. 2020 Oct;45(10):800-801