tumors of bone

Tumor Matrix
Osteoblastic
Fluffy, cotton-like or cloud-like densities
Osteosarcoma
Cartilaginous
Comma-shaped, punctate, annular, popcorn-like
Enchondroma, chondrosarcoma, chondromyxoid fibroma
Primary malignant tumors
In the Transverse Plane
Central
Enchondroma
Eccentric
GCT, osteosarcoma, chondromyxoid fibroma
Cortical
Non-ossifying fibroma, osteoid osteoma
Parosteal
Parosteal osteosarcoma, osteochondroma
In the Longitudinal Plane
Epiphyseal
GCT, chondroblastoma
Metaphyseal
Osteomyelitis, osteo- and chondrosarcoma
Diaphyseal
Round cell lesions, ABC, enchondroma
Multiple myeloma
Mets
Aneurysmal bone cyst
Fibrous dysplasia
Brown tumor
Enchondroma
Lymphoma
Tumor TypesCharacteristic Locations
Simple bone cyst
Proximal humerus
Chondroblastoma
Epiphyses
Giant Cell tumor
Epiphyses

Geographic Bone Destruction
Destructive lesion with sharply defined border
Implies a less-aggressive, more slow-growing, benign process
Narrow transition zone