Bone Tumors Department of Radiology, Affiliated Hospital of Xuzhou Medical College Bone and Soft Tissue Tumor and Tumor-like Disease Radiological examination is essential before any attempt at diagnosis of a bone tumor is made. The diagnosis of a bone tumor requires the cooperation of the clinician, radiologist and pathologist. Radiology provides the earliest useful diagnostic evidence of the nature of a bony lesion. Bone and Soft Tissue Tumor and Tumor-like Disease • Radiological assessment of bone tumors location, rate of growth, number,matrix mineralization, periosteal reaction, regularity of the margin, soft tissue mass age of presentation,incidence rate, symptom and physical sign,the result of laboratory examination Patterns of Bone Destruction l Geographic l Moth-eaten l Permeative Geographic Bone Destruction l l l Destructive lesion with sharply defined border Implies a less-aggressive, more slow-growing, benign process Narrow transition zone Patterns of Bone Destruction l Geographic l Moth-eaten l Permeative Non-ossifying fibroma Geographic Lesions Examples l Non-ossifying fibroma l Chondromyxoid fibroma l Eosinophilic granuloma Moth-eaten Appearance l l Areas of destruction with ragged borders Implies more rapid growth n Probably a malignancy Patterns of Bone Destruction l Geographic l Moth-eaten l Permeative Multiple Myeloma Moth-eaten Appearance Examples l Myeloma l Metastases l Lymphoma l Ewing’s sarcoma Permeative Pattern l Ill-defined lesion with multiple “wormholes” l Spreads through marrow space l Wide transition zone l Implies an aggressive malignancy n Round-cell lesions Patterns of Bone Destruction l Geographic l Moth-eaten l Permeative Leukemia Permeative Pattern Round cell lesions l Lymphoma, leukemia l Ewing’s Sarcoma l Myeloma l Osteomyelitis l Neuroblastoma Patterns of Destruction Geographic Less malignant Moth-eaten Permeative More malignant Periosteal Reactions l l Benign n None n Solid More aggressive or malignant n Lamellated or onion-skinning n Sunburst n Codman’s triangle Periosteal Reactions l l Benign n None n Solid Aggressive/malignant n Onion-skinning n Sunburst n Codman’s triangle Non-ossifying fibroma Periosteal Reactions l l Benign n None n Solid Aggressive/malignant n Onion-skinning n Sunburst n Codman’s triangle Chronic osteomyelitis Periosteal Reactions l l Benign n None n Solid Aggressive/malignant n Onion-skinning n Sunburst n Codman’s triangle Ewing’s sarcoma Periosteal Reactions l l Benign n None n Solid Aggressive/malignant n Onion-skinning n Sunburst n Codman’s triangle Osteosarcoma Periosteal Reactions l l Benign n None n Solid Aggressive/malignant n Onion-skinning n Sunburst n Codman’s triangle Ewing’s-Codman’s triangle Periosteal Reactions Solid Less malignant Lamellated Sunburst Codman’s More malignant Tumor Matrix l Osteoblastic n Fluffy, cotton-like or cloud-like densities s l Osteosarcoma Cartilaginous n Comma-shaped, punctate, annular, popcorn-like s Enchondroma, chondrosarcoma, chondromyxoid fibroma Tumor matrix l Osteoblastic l Cartilaginous l Osteosarcoma Tumor matrix l Osteoblastic l Cartilaginous l Chondrosarcoma Expansile Lesions of Bone l Multiple myeloma l Brown tumor l Mets l Enchondroma l Aneurysmal bone cyst l Lymphoma l Fibrous dysplasia Expansile lesions l Multiple myeloma l Mets l Aneurysmal bone cyst l Fibrous dysplasia l Brown tumor l Enchondroma l Lymphoma • Multiple Myeloma Expansile lesions l Multiple myeloma l Mets l Aneurysmal bone cyst l Fibrous dysplasia l Brown tumor l Enchondroma l Lymphoma • Renal Cell Carcinoma Expansile lesions l Multiple myeloma l Mets l Aneurysmal bone cyst l Fibrous dysplasia l Brown tumor l Enchondroma l Lymphoma • Aneurysmal Bone Cyst Expansile lesions l Multiple myeloma l Mets l Aneurysmal bone cyst l Fibrous dysplasia l Brown tumor l Enchondroma l Lymphoma • Fibrous Dysplasia Expansile lesions l Multiple myeloma l Mets l Aneurysmal bone cyst l Fibrous dysplasia l Brown tumor l Enchondroma l Lymphoma • Brown Tumor Expansile lesions l Multiple myeloma l Mets l Aneurysmal bone cyst l Fibrous dysplasia l Brown tumor l Enchondroma l Lymphoma • Enchondroma Expansile lesions l Multiple myeloma l Mets l Aneurysmal bone cyst l Fibrous dysplasia l Brown tumor l Enchondroma l Lymphoma • Lymphoma Clues by Location of Lesion In the Transverse Plane l Central n l Eccentric n l GCT, osteosarcoma, chondromyxoid fibroma Cortical n l Enchondroma Non-ossifying fibroma, osteoid osteoma Parosteal n Parosteal osteosarcoma, osteochondroma Osteosarcoma Parosteal sarcoma Osteochondroma In The Transverse Plane In the Longitudinal Plane l Epiphyseal n l Metaphyseal n l GCT, chondroblastoma Osteomyelitis, osteo- and chondrosarcoma Diaphyseal n Round cell lesions, ABC, enchondroma Tumor Types Characteristic Locations l Simple bone cyst n l Chondroblastoma n l Proximal humerus Epiphyses Giant Cell tumor n Epiphyses Characteristic locations l Simple bone cyst n l Chondroblastoma n l Proximal humerus Epiphyses Giant Cell tumor n Epiphyses Characteristic locations l Simple bone cyst n l Chondroblastoma n l Proximal humerus Epiphyses Giant Cell tumor n Epiphyses Chondroblastoma Characteristic locations l Simple bone cyst n l Chondroblastoma n l Proximal humerus Epiphyses Giant Cell tumor n Epiphyses Giant Cell Tumor Tumor Types Characteristic Locations l Adamantinoma n l Chordoma n l Tibia Sacrum, clivus Osteoblastoma n Spine, posterior Characteristic locations l Adamantinoma n l Chordoma n l Tibia Sacrum, clivus Osteoblastoma n Spine, posterior Adamantinoma Characteristic locations l Adamantinoma n l Chordoma n l Tibia Sacrum, clivus Osteoblastoma n Spine, posterior Chordoma Characteristic locations l Adamantinoma n l Chordoma n l Tibia Sacrum, clivus Osteoblastoma n Spine, posterior Osteoblastoma Tumor Types Characteristic Locations l Parosteal sarcoma n l Distal femur Periosteal sarcoma n Tibia Characteristic locations l Parosteal sarcoma n l Distal femur Periosteal sarcoma n Tibia Parosteal sarcoma Characteristic locations l Parosteal sarcoma n l Distal femur Periosteal sarcoma n Tibia Clues by Density Of Lesion Sclerotic Cortical Lesions l Osteoid osteoma l Brodie’s abscess l Stress fracture Sclerotic cortical lesions l Osteoid osteoma l Brodie’s abscess l Stress fracture Osteoid Osteoma Sclerotic cortical lesions l Osteoid osteoma l Brodie’s abscess l Stress fracture Brodie’s abscess Sclerotic cortical lesions l Osteoid osteoma l Brodie’s abscess l Stress fracture Healing Stress Fracture Sclerotic Cortical Lesions Osteoid Osteoma Brodie’s abscess Healing Stress Fracture Benign vs. Malignant
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