osteoblastoma

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osteoblastoma

 [os″te-o-blas-to´mah]
a benign, painful, rather vascular tumor of bone marked by formation of osteoid tissue and primitive bone.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

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.
Farlex Partner Medical Dictionary © Farlex 2012

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.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

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.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
Benign osteoblastoma of the temporal bone: Case report and literature review.
Excision of a pelvic benign osteoblastoma with preserved hip stability: A case report.
Benign osteoblastoma; a category of osteoid-and bone-forming tumors other than classical osteoid osteoma, which may be mistaken for giant-cell tumor or osteogenic sarcoma.
Benign osteoblastoma of the occipital bone: case report and literature review.
Benign osteoblastoma of the ethmoid bone: report of a case.
Benign osteoblastoma: apropos of a case localized in the upper maxilla [in French].
Benign osteoblastoma; a category of osteoid--and bone-forming tumors other than classical osteoid osteoma, which may be mistaken for giant-cell tumor or osteogenic sarcoma.

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