by Matthew Moncayo | Apr 29, 2026 | Benign Miscellaneous, Bone Tumors, Tumor Classification
General Information An aneurysmal bone cyst (ABC) is a benign bone tumor or neoplasm. It consists of a blood-filled multiloculated cavity with a thick fibrous lining. The lining is composed of mesenchymal spindle cells, capillaries, multinucleated giant cells, and...
by Matthew Moncayo | Apr 21, 2026 | Bone Tumors, Malignant Miscellaneous, Tumor Classification
General Information Primary intraosseous epithelial neoplasm Low-grade malignancy and predilection for tibia Associated with intraosseous fibro-osseous proliferation (osteofibrous dysplasia) Classic vs. Differentiated Classic – grow beyond cortex, older patients,...
by drjamescwittigmd_4dcg6x | Oct 3, 2025 | Benign, Benign Chondroid, Bone Tumors, Childhood Sarcomas, Tumor Classification
General Information Codman Tumor (old historical name for chondroblastoma) Cartilage Containing Giant Cell Tumor (Kolodney 1972) Calcifying Giant Cell Tumor (Ewing 1928) Clinical Data Rare; 1-2% all bone tumors Male predilection (2:1) Children and young adults; 90%...
by drjamescwittigmd_4dcg6x | Oct 3, 2025 | Bone Tumors, Malignant Osseous
General Information An osteosarcoma is so called, because it is a cancerous tumor that is derived from a mesenchymal stem cell precursor (thus, by definition a sarcoma). The malignant cells produce immature woven bone, or osteoid, which is why the tumor is named...
by drjamescwittigmd_4dcg6x | Oct 3, 2025 | Bone Tumors
General Information Benign neoplasm Composed of mature hyaline cartilage Arises from surface of bone from inner layer of periosteum Erodes the outer table of the cortex Does not grossly extend into medullary cavity Also known as juxtacortical chondroma More cellular...
by drjamescwittigmd_4dcg6x | Oct 3, 2025 | Bone Tumors, Malignant Osseous
General Information Intracortical osteosarcoma is an extremely rare type of osteosarcoma that arises within and is usually confined to the cortex of the bone. It is a high grade osteosarcoma that is confined to the cortex of a long bone Intracortical osteosarcoma is...
