Items tagged “bone tumour”

69 results found
Article

Aneurysmal bone cyst

Aneurysmal bone cysts (ABC) are benign expansile osteoclastic giant cell-rich bony neoplasms, composed of numerous blood-filled channels and cystic spaces 1. ABC accounts for the 'A' in the popular mnemonic for lucent bone lesions FEGNOMASHIC. Terminology The terms 'giant cell reparative gran...
Article

Osteosarcoma

Osteosarcomas are malignant bone-forming tumors. They are the second most common primary bone tumor after multiple myeloma, accounting for ~20% of all primary bone tumors. In children, they are considered the most common primary bone tumor 12. They can be classified into primary and secondary fo...
Article

Giant cell tumor of bone

Giant cell tumors (GCT) of bone are locally aggressive and rarely malignant or metastasizing bony neoplasms, typically found at the end of long bones which is the region around the closed growth plate extending into the epiphysis and to the joint surface 1. They are classified as osteoclastic gi...
Article

Non-ossifying fibroma

Non-ossifying fibromas (NOF) are benign and generally self-limiting osteoclastic giant cell-rich bone tumors typically found in the metaphyses of long bones. They are classified as osteoclastic giant cell-rich bone tumors 1,2. NOFs account for the 'N' in the popular mnemonic for lucent bone les...
Article

Parosteal osteosarcoma

Parosteal osteosarcoma is a subtype of osteosarcoma and arises from the outer layer of the periosteum.  Epidemiology It is the most common type of juxtacortical or surface osteosarcoma and accounts for ~4% of all osteosarcomas 1-3. It typically presents in early adulthood and middle age with a...
Article

Fibrous dysplasia

Fibrous dysplasia (FD) is a developmental benign medullary fibro-osseous process characterized by the failure to form mature lamellar bone and arrest as woven bone that can be multifocal. It can affect any bone and occur in a monostotic form involving only one bone or a polyostotic form involvin...
Article

Clear cell chondrosarcoma

Clear cell chondrosarcomas are low-grade malignant chondrogenic bone neoplasms of the epiphysis. The name derives from the presence of clear cell chondrocytes which contain abundant vacuolated cytoplasm due to the presence of glycogen. Epidemiology Clear cell chondrosarcomas make up around 2% ...
Article

Mesenchymal chondrosarcoma

Mesenchymal chondrosarcomas (MCS) are rare highly malignant chondrosarcomas with a biphasic morphology of a primitive mesenchymal tumor and a well-differentiated cartilaginous component. Epidemiology Mesenchymal chondrosarcomas are rare tumors and make up for ~2-4% of all chondrosarcomas 1. Th...
Article

Myxoid chondrosarcoma

Myxoid chondrosarcomas are rare, intermediate grade subtype of chondrosarcoma (see chondrosarcoma grading). It is found in both bone and soft tissues (see extraskeletal chondrosarcoma). Epidemiology Typically affects patients in their 30s to 60s with a male predilection 3, 4. They may account ...
Article

Enchondroma vs low grade chondrosarcoma

Distinguishing between enchondromas and low-grade conventional chondrosarcomas is a frequent difficulty as the lesions are both histologically and radiographically very similar. It is important to remember, though, that differentiating between them may be a moot point since both can either be c...
Article

Conventional chondrosarcoma

Conventional chondrosarcomas are locally aggressive and malignant cartilagineous or chondrogenic neoplasms and are the most common form of chondrosarcoma 1. Conventional chondrosarcomas can be primary or secondary and are traditionally categorized according to their location within the bone into...
Article

Dedifferentiated chondrosarcoma

Dedifferentiated chondrosarcomas (DCS) are malignant high-grade chondrosarcomas with a poor prognosis. They have a bi-morphic histomorphology of conventional chondrosarcoma and a non-cartilaginous high-grade sarcoma. Epidemiology Dedifferentiated chondrosarcomas can develop in 10-15% of centra...
Article

Primary intraosseous hemangioma

Primary intraosseous hemangiomas, also known as hemangiomas of bone, are benign tumors of small and large caliber vascular channels arising within bone 4, seen most frequently in the vertebrae and next most frequently in the skull. Terminology Given their non-neoplastic nature, some authors re...
Case

Giant cell tumor with aneurysmal bone cyst of sacrum

  Diagnosis certain
Frank Gaillard
Published 04 Nov 2009
84% complete
X-ray CT MRI
Case

Parosteal osteosarcoma

  Diagnosis almost certain
Frank Gaillard
Published 06 Nov 2009
47% complete
X-ray
Case

Osteosarcoma - distal tibia

  Diagnosis almost certain
Frank Gaillard
Published 06 Nov 2009
74% complete
MRI X-ray
Case

Osteosarcoma - distal femur

  Diagnosis almost certain
Frank Gaillard
Published 06 Nov 2009
77% complete
Nuclear medicine X-ray MRI
Case

Osteosarcoma of the distal femur

  Diagnosis certain
Frank Gaillard
Published 06 Nov 2009
98% complete
Diagram X-ray Nuclear medicine MRI
Case

Distal femoral osteosarcoma with pathological fracture

  Diagnosis certain
Frank Gaillard
Published 06 Nov 2009
91% complete
X-ray
Case

Osteoblastoma

  Diagnosis almost certain
Angela Byrne
Published 11 Nov 2009
67% complete
X-ray CT MRI