Aggressive osteoblastoma with degeneration to secondary aneurysmal bone cyst

ABSTRACT A 4-year-old male patient presented with headaches that started 18 months ago and were associated with progressive loss of balance and difficulty walking. Magnetic resonance imaging (MRI) demonstrated an expansile extra-axial mass lesion in the posterior aspect of the posterior fossa on the...

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Bibliographic Details
Published in:Jornal brasileiro de patologia e medicina laboratorial 2019-08, Vol.55 (4), p.426-433
Main Authors: Duarte, Marcio Luís, Prado, José Luiz M. A., Pereira, Carlos Alexandre M., Alves, Maria Teresa S., Scoppetta, Luiz Carlos D.
Format: Article
Language:English
Subjects:
bone cysts
bone neoplasms
magnetic resonance imaging
MEDICAL LABORATORY TECHNOLOGY
MEDICINE, RESEARCH & EXPERIMENTAL
PATHOLOGY
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Summary:ABSTRACT A 4-year-old male patient presented with headaches that started 18 months ago and were associated with progressive loss of balance and difficulty walking. Magnetic resonance imaging (MRI) demonstrated an expansile extra-axial mass lesion in the posterior aspect of the posterior fossa on the left, compressing the adjacent brain, as well as the cerebellar hemispheres; it also distorts the fourth ventricle with severe obstructive hydrocephalus upstream. Histological evaluation diagnosed aggressive osteoblastoma with a secondary aneurysmal bone cyst of the skull. We report a case of aggressive osteoblastoma in which the lesion in the MRI was mimicking brain tumor or intracranial primary tumor rather than primary bone tumor.
ISSN:1676-2444
1678-4774
1678-4774
DOI:10.5935/1676-2444.20190039