Fronto-orbito-ethmoidal intradiploic meningiomas: A case study with systematic review

Area of Science:

• Neurosurgery
• Oncology
• Pathology

Background:

• Primary intradiploic meningiomas are rare extra-axial skull tumors.
• This study details a complex case involving the left medial wall, orbital roof, frontal sinus, and ethmoidal body.
• A systematic review of purely calvarial intradiploic meningiomas, particularly fronto-orbito-ethmoidal types, was conducted.

Purpose of the Study:

• To report a complex case of intradiploic intraosseous metaplastic meningioma.
• To systematically review the diagnosis and management of purely calvarial intradiploic meningiomas.
• To contribute to the clinical experience and understanding of rare meningioma subtypes.

Main Methods:

• A systematic literature search was performed using PubMed and Scopus.
• Mesh terms included: Intradiploic, intraosseous, calvarial, and meningioma.
• Eligibility was limited to case series and case reports due to existing literature.

Main Results:

• 41 studies comprising 59 patients were included in the review.
• The mean patient age was 47.69 years, with a 1.2/1 female/male ratio.
• Complex fronto-orbito-ethmoidal meningiomas occurred in 11.9% of cases; 96.6% underwent gross-total resection.

Conclusions:

• The successfully treated case adds to clinical experience with rare intradiploic meningiomas.
• Further research is needed to elucidate the development mechanisms of these tumors.
• This review aids in understanding the diagnosis and management of calvarial meningiomas.