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 4, 2025 | Benign Chondroid, Malignant Chondroid
General Information Enchondroma is a benign indolent intramedullary hyaline cartilage neoplasm Accounts for 10% of all benign osseous tumors Limited growth, most lesions are less than 5 cm in maximal dimension Bones grow from a cartilaginous growth plate that...
by drjamescwittigmd_4dcg6x | Oct 4, 2025 | Benign, Benign Chondroid, Childhood Sarcomas
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 4, 2025 | Benign, Benign Chondroid, Childhood Sarcomas
General Information Osteochondroma is an outgrowth of medullary and cortical bone A portion of the cartilaginous growth plate grows outward instead of longitudinally and forms the osteochondroma/exostosis (like a branch on a tree) It consists of bone covered with...
by drjamescwittigmd_4dcg6x | Oct 4, 2025 | Benign Osseous, Tumor Classification
General Information Benign osteoblastic neoplasm with aggressive growth pattern (considered a benign aggressive tumor) Histologically it is similar to osteoid osteoma but is a larger size and grows progressively Consists of well vascularized connective tissue stroma...
