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Multiple primary intraosseous meningioma mimicking fibrous dysplasia: a case report

Büşra Yaprak Bayrak1, Çiğdem Vural1, İsa Çam2

  • 1Department of Pathology, Kocaeli University, Kocaeli, Turkey.

British Journal of Neurosurgery
|August 6, 2019
PubMed

Insights

Primary intraosseous meningioma (PIM) is a rare skull tumor. This report details a unique case of multiple PIMs in the frontoparietal regions, challenging initial diagnoses and highlighting rarity.

Area of Science:

  • Neurosurgery
  • Oncology
  • Pathology

Background:

  • Primary intraosseous meningioma (PIM) is an exceptionally rare extradural tumor.
  • PIMs typically occur in the calvarium, orbits, and anterior cranial fossa.

Observation:

  • This case presents bilateral PIMs in the frontoparietal regions.
  • Initial imaging suggested fibrous dysplasia, but lesion expansion prompted further investigation.
  • One tumor was surgically resected for histopathological analysis.

Findings:

  • Histopathology confirmed the diagnosis of Primary Intraosseous Meningioma (PIM).
  • This represents the second documented instance of multiple PIMs.

Implications:

  • This case expands the known clinical presentations of PIM.
  • Highlights the importance of considering PIM in the differential diagnosis of cranial bone lesions.
  • Further research into the etiology and behavior of multiple PIMs is warranted.
Keywords:
Brain neoplasmdifferential diagnosisextradural tumorsmultiple intraosseous meningioma

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