Meningeal pure-bone mimicking parasagittal calvarial osteoma

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We report a case of intracranial pure bone developed in the inner leaf of the dura mater. The patient, a 32-year-old woman, had suffered chronic headache over the previous two years. Physical and neurological findings on admission were unremarkable. Computed tomography scan revealed a homogeneous high-density mass without any enhancement and skull radiographs showed a dense calcified mass in the right frontal area. The mass was 3 cm in diameter and 2 cm in thickness. Total resection was performed under a preoperative diagnosis of calcified meningioma. However, histopathological findings revealed the mass to be "pure bone". Intracranial meningeal bone and/or osteoma are rare for a pathogenic origin. The literature on intracranial bone and/or osteoma of dural origin is reviewed.
藍野大学の論文