Méningiome intra-osseux : cause de faux positifs dans la recherche de métastases osseuses par scintigraphie aux biphosphonates

Intracranial meningiomas are benign extra-axial brain tumors. Their etiology is undetermined and several hypotheses have been proposed to explain their genesis. The clinical symptomatology of intracranial meningiomas is atypical and varies according to the location of the lesion, its size, and its relationship with neighboring organs. Imaging is essential for establishing a positive diagnosis, but the way to a diagnosis of certainty remains histological. In this article, we describe the CT and magnetic resonance imaging aspects of an intraosseous meningioma discovered in a patient in her forties that presented with right proptosis, and whose brain MRI revealed a cranial lesion with adjacent meningeal involvement; the CT scan subsequently performed allowed a better analysis of the bone lesion, the appearance of which suggested an intraosseous meningioma. This diagnosis was confirmed by a histological exam. The purpose of this article is to illustrate the CT and MRI aspects of this entity by reporting a case of intraosseous meningioma of spheno-orbital location.

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“…MRI can also detect intracranial extension [ 11 ]. Scintigraphy reveals hyperuptake in most cases [ 12 ].…”

Section: Discussionmentioning

confidence: 99%

Intraosseous Meningioma of Spheno-Orbital Localization: A Case Report

Hawa¹,

Moussa²,

Benzalim³

et al. 2023

Cureus

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“…Low grade meningiomas are by far the most common [4,6,9]. A case of intraosseous meningioma cause of false positives in the search for bone metastases by bisphosphonate scintigraphy has been described [10]. Surgical resection should be as complete as possible, taking all the bone involved.…”

Section: Discussionmentioning

confidence: 99%

Large Intra-Osseous Cystic Meningioma in a Child: A Rare Entity

Zabsonre¹

2019

CNN

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Introduction. Meningiomas are rare tumors in children, in whom the intracranial pathology is dominated by craniopharyngiomas and medulloblastomas. Cystic meningiomas are also rare, as is their intraosseous location. Intraosseous meningiomas are ectopic meningiomas. Their diagnosis is rarely done preoperatively. We report a case of cystic intraosseous meningioma managed in our department. Observation. Mr. ON, 16 years old, presented progressively a right temporal tumefaction causing an aesthetic prejudice. This tumefaction raised the flag of the right ear. It was covered by normal skin and there was moderate right hypo acoustics. CT scan showed a right sphenotemporal lesion with hyperdense contours and hypodense contents. It repressed the brain without invading it but affected the anatomic structures of the ear. Surgical procedure allowed for almost complete excision of the lesion. Histology of the operative specimen concluded to an intraosseous meningothelial meningioma. After a 4-year follow-up, the tumor residue remained stable. Conclusion. In addition to the diagnostic difficulty, we faced two other therapeutic difficulties. The first is that complete excision was not possible to avoid compromising a hearing always good. The second difficulty was related to the age of the patient who did not allow us to consider the cranial plasty before the end of the growth.

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Méningiome intra-osseux : cause de faux positifs dans la recherche de métastases osseuses par scintigraphie aux biphosphonates

Cited by 2 publications

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Intraosseous Meningioma of Spheno-Orbital Localization: A Case Report

Intraosseous Meningioma of Spheno-Orbital Localization: A Case Report

Large Intra-Osseous Cystic Meningioma in a Child: A Rare Entity

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