{Reference Type}: Case Reports {Title}: A Unique Case of Familial Expansile Osteolysis: Findings on 99mTc-MDP Bone Scan. {Author}: Pitot MA;Broski SM;Baffour F;Powell GM; {Journal}: Clin Nucl Med {Volume}: 48 {Issue}: 12 {Year}: 2023 Dec 1 {Factor}: 10.782 {DOI}: 10.1097/RLU.0000000000004902 {Abstract}: UNASSIGNED: Familial expansile osteolysis is an exceedingly rare autosomal dominant bone dysplasia, which can have overlapping features with Paget disease and expansile skeletal hyperphosphatasia. We present a novel case of familial expansile osteolysis evaluated on 99mTc-MDP bone scan with correlative radiographs and CT.