osteoblastoma


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Related to osteoblastoma: osteochondroma, enchondroma, chondroblastoma

osteoblastoma

 [os″te-o-blas-to´mah]
a benign, painful, rather vascular tumor of bone marked by formation of osteoid tissue and primitive bone.

os·te·o·blas·to·ma

(os'tē-ō-blas-tō'mă),
An uncommon benign tumor of osteoblasts with areas of osteoid and calcified tissue, occurring most frequently in the spine of a young person.

osteoblastoma

/os·teo·blas·to·ma/ (os″te-o-blas-to´mah) a benign, painful, rather vascular tumor of bone marked by formation of osteoid tissue and primitive bone.

osteoblastoma

[-blastō′mə] pl. osteoblastomas, osteoblastomata
a small, benign, fairly vascular tumor of poorly formed bone and fibrous tissue, occurring most frequently in the vertebrae, femur, tibia, or bones of the upper extremities in children and young adults. The tumor may cause pain, erosion, and resorption of native bone. Excision is the preferred treatment. Also called osteoid osteoma.

osteoblastoma

A bone lesion which is traditionally defined as a benign tumour of highly vascularised osteoblastic stroma, which is most common between age 5 and 25, and often located in vertebrae.
 
DiffDx
• Osteoid osteoma: Osteoblastomas are larger (over 2 cm in diameter), more axial in location, and lack imaging appearance of OOs.
• Osteosarcoma: Osteoblastomas are non-invasive, lack cartilage, have an osteosclerotic rim and looser cellularity.
• Pseudomalignant osteoblastoma: Osteoblastomas lack plump osteoblasts with “ancient change”—large nuclei with smudged nuclei.

os·te·o·blas·to·ma

(os'tē-ō-blas-tō'mă)
An uncommon benign tumor of osteoblasts with areas of osteoid and calcified tissue, occurring most frequently in the spine of a young person.

osteoblastoma (os´tēōblas´tōmə),

n a bone tumor benign in nature but characterized by swelling and chronic dull pain. If left untreated, these tumors lead to such conditions as scoliosis.

osteoblastoma

a giant osteoid osteoma; a benign, painful, rather vascular enostotic tumor of bone characterized by trabeculae of osteoid produced by well-developed osteoblasts. It has not been described in animals.
References in periodicals archive ?
Expert pathologic consultation was obtained from multiple head and neck pathologists, including a consultation with the Armed Forces Institute of Pathology, and the consensus was that the lesion represented a high-grade osteoblastoma.
Osteoblastoma generally occurs in young individuals and more commonly in males.
At this time, the pathology was revisited, and a diagnosis of an osteoblastoma was established.
Aunque la mayoria de los tumores benignos como por ejemplo osteoblastomas u osteocondromas son de exeresis relativamente facil, otros presentan dificultades tecnicas por su agresividad y vascularizacion como en los tumores de celulas gigantes y quistes oseos aneurismaticos.
Benign causes of spinal tumors in children include bone cysts and osteoblastoma.
Because of this histologic heterogeneity, this tumor can be mistaken for a variety of lesions with potentially overlapping features, including fibrous dysplasia (FD), intraosseous lipoma, nonossifying fibroma, cartilaginous neoplasms, and osteoblastoma.
A secondary ABC develops in association with other neoplasms most commonly giant bone tumor (GCT) of the bone, osteoblastoma, chondroblastoma, and fibrous dysplasia [10].
Meanwhile, secondary ABCs are formed from preexisting bone lesions such as angioma, nonossifying fibroma, osteoblastoma, giant cell tumors, chondroblastoma, and fibrous dysplasia.
On CT the nidus of osteoblastoma is usually larger than 2 cm.
It helps in defining exact location of lesion, but there are also limitations such as some primitive bone lesions like bone Ewing's sarcoma may appear as normal while some benign lesions like aneurysmal bone cyst or osteoblastoma may appear aggressive on roentgenogram.
Differential diagnoses for chronic recurrent multi-focal osteomyelitis DIFFERENTIAL DIAGNOSES FOR CRMO * Bacterial Osteomyelitis * Bone Bruise * Fracture * Osteonecrosis * Juvenile Idiopathic Arthritis * Osteosarcoma * Ewing's Sarcoma * Osteoblastoma * Osteoid Osteoma * Leukemia * Lymphoma * Neuroblastoma