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Year : 2021  |  Volume : 16  |  Issue : 3  |  Page : 589-594

Giant intraosseous meningioma associated with calvarial hyperostosis and subcutaneous invasion: Case reports and literature review

1 Department of Neurosurgery, Tohoku University, Graduate School of Medicine, Sendai, Miyagi, Japan
2 Department of Neurosurgery, Kohnan Hospital, Sendai, Miyagi, Japan
3 Department of Neurosurgery, National Hospital Organization Sendai Medical Center, Sendai, Miyagi, Japan

Correspondence Address:
Dr. Atsushi Saito
Department of Neurosurgery, Kohnan Hospital, 4-20-1 Nagamachiminami, Taihaku, Sendai, Miyagi 9828523
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ajns.AJNS_534_20

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Most meningiomas grow intracranially, and primary intraosseous meningioma is rarely reported. We present two rare surgical cases of giant intraosseous meningothelial meningioma. The first patient was a 35-year-old male with parietal skull deformity without neurological symptoms. Total resection was successful. The origin was the parasagittal intraosseous layer, and the superior sagittal sinus was partially opened. The second patient was a 20-year-old female with a slightly upward protrusion of the frontal skull without pain or neurological deficits. The lesion was totally resected, and the origin was the parasagittal intraosseous layer invading into the dura matter and subcutaneous layer. The clinical management of these cases presented a surgical challenge because of detachment and repair from venous sinuses. The current report provides surgical tips for such rare diseases and is a good reference for the future treatment of similar diseases.

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