Paget's disease of bone mimicking metastases

Seven patients with Paget's disease, mimicking the radiographic appearance of metastatic disease, are illustrated. This disorder may simulate metastases if the simultaneous processes of bone resorption and new bone formation are not apparent, especially if there is no evidence of bone enlargement. Additional confusion may arise if the lesion is monostotic, has an unusual location, or occurs in a patient with known or suspected malignant disease.