Department of Neurosurgery, Taipei Medical University-Wan Fang Hospital, Taipei Medical University, Taipei 116, Taiwan.
World J Surg Oncol. 2013 Sep 8;11:221. doi: 10.1186/1477-7819-11-221.
Intracranial osteomas are uncommon lesions that usually arise from the inner table of the cranium. There are few reports in the literature of intracranial osteomas with meninges attachment and without direct relation with the skull bone; these osteomas were mostly attached with dura. We report a rare osteoma with falx attachment.
A 64-year-old woman presented with a 3-month history of intermittent tinnitus and dizziness. The scout film of petrous bone computed tomography scan revealed a high-density lesion in the frontal area. Magnetic resonance imaging showed a 2.5-cm mass attached to the surface of the falx in the right frontal parasagittal area. The patient underwent right frontal craniotomy, and a bony hard mass was found located in the right frontal parasagittal region extra-axially, with its medial surface attached to the falx. It could not be broken down by the cavitron ultrasonic surgical aspirator or even the cutting loop and was detached from the falx and removed in one piece. Histopathological examination showed a nodule with bony trabeculae and bone marrow tissue, compatible with osteoma. The postoperative course was uneventful, and the patient was discharged from the hospital with no neurological deficits one week after operation.
This is the first case report in the English literature of an intracranial osteoma arising from the falx. Because of their slow growth and their locations in silent brain areas, intracranial osteomas are usually diagnosed incidentally. Surgical resection is the primary treatment choice.
颅内骨瘤是一种不常见的病变，通常起源于颅骨内板。文献中很少有报告提到脑膜附着且与颅骨无直接关系的颅内骨瘤；这些骨瘤大多与硬脑膜附着。我们报告一例罕见的镰状突附着骨瘤。
一名 64 岁女性，因间歇性耳鸣和头晕 3 个月就诊。岩骨 CT 扫描的初步检查显示额区高密度病变。磁共振成像显示右额矢状旁区镰状附着表面有一个 2.5cm 的肿块。患者接受了右额开颅术，发现一个位于右额矢状旁区的骨性硬肿块，位于颅外，其内侧表面附着于镰状突。它不能被 cavitron 超声手术吸引器或甚至切割环分解，并从镰状突上完整分离并切除。组织病理学检查显示一个有骨小梁和骨髓组织的小结节，符合骨瘤。术后情况良好，患者术后一周出院，无神经功能缺损。
这是首例英文文献报告的起源于镰状突的颅内骨瘤。由于它们生长缓慢，且位于安静的脑区，颅内骨瘤通常是偶然诊断的。手术切除是主要的治疗选择。
