Kashimura Hiroshi, Mase Tomohiko, Ogasawara Kuniaki, Kurose Akira
Department of Neurosurgery, Iwate Prefectural Chubu Hospital, Kitakami, Iwate, Japan.
Surg Neurol Int. 2012;3:63. doi: 10.4103/2152-7806.97007. Epub 2012 Jun 9.
Rhabdoid meningioma exhibits high mitotic activity, anaplasia, and increased markers of cell proliferation. Here we describe a rhabdoid meningioma with a pattern of growth extending into the subarachnoid space and filled the cortical sulci.
A 72-year-old woman presented with headache and was admitted to our hospital. Neurologic and physical examinations revealed no abnormalities. Contrast-enhanced axial T1-weighted images showed a well-enhanced, dural-based mass compressing the right temporal and frontal lobes, and extending into the sylvian cistern and filling the cortical sulci. The patient underwent partial resection and the histologic findings demonstrated rhabdoid meningioma.
Although this type of tumor is known to be aggressive in its growth, extension into the adjacent cisternal space and the filling of the cortical sulci are rare. The combination of histologic anaplasia with the highest reported proliferation rate, loss of cohesion of neoplastic cells, and the location of the tumor led to the unique growth pattern.
横纹肌样脑膜瘤表现出高有丝分裂活性、间变以及细胞增殖标志物增加。在此，我们描述一例横纹肌样脑膜瘤，其生长模式延伸至蛛网膜下腔并充满脑沟。
一名72岁女性因头痛入院。神经和体格检查未发现异常。增强轴向T1加权图像显示一个强化良好、起源于硬脑膜的肿块，压迫右侧颞叶和额叶，并延伸至外侧裂池并充满脑沟。患者接受了部分切除术，组织学检查结果显示为横纹肌样脑膜瘤。
尽管已知此类肿瘤生长具有侵袭性，但延伸至相邻脑池间隙并充满脑沟的情况罕见。组织学间变与报道的最高增殖率、肿瘤细胞黏附丧失以及肿瘤位置相结合，导致了独特的生长模式。
