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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Published inJornal brasileiro de patologia e medicina laboratorial Vol. 55; no. 4; pp. 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 Journal Article
LanguageEnglish
Portuguese
Published Sociedade Brasileira de Patologia Clínica 01.08.2019
Subjects
bone cysts
bone neoplasms
magnetic resonance imaging
MEDICAL LABORATORY TECHNOLOGY
MEDICINE, RESEARCH & EXPERIMENTAL
PATHOLOGY
quiste óseo
magnetic resonance imaging
bone neoplasms
imagen por resonancia magnética
bone cysts
neoplasias óseas
neoplasias ósseas
imagem por ressonância magnética
cisto ósseo
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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