Metastases-Metastases are the most common malignant bone tumors.
-Metastases must be included in the differential diagnosis of any bone lesion, whether well-defined or ill-defined osteolytic or sclerotic in age > 40.
-Bone metastases have a predilection for hematopoietic marrow sites: spine, pelvis, ribs, cranium and proximal long bones: femur, humerus.
-Metastases can be included in the differential diagnosis if a younger patient is known to have a malignancy, like neuroblastoma, rhabdomyosarcoma, retinoblastoma.
-Most common osteolytic metastases: kidney, lung, colon and melanoma.
-Most common osteosclerotic metastases: prostate and breast.
Discriminator: Must be over age 40.
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