18F-fluorodeoxyglucose positron emission tomography–computed tomography in malignant transformation of paget's disease of bone

Malignant transformation Paget's disease of bone to sarcoma is relatively rare, occurring in approximately 1% of these patients. Although few clinical and imaging findings may help in prediction of malignant transformation, most of them are nonspecific. We describe a case of carcinoma vocal cord and Paget's disease of bone with sarcomatous transformation, where 18F-fluorodeoxyglucose (FDG) positron emission tomography–computed tomography was helpful in accurate diagnosis by demonstrating differential intense FDG uptake in transformed areas of pagetic bone and also FDG-avid osteoblastic pulmonary metastasis.