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Clinicopathological analysis of metaplastic meningioma: report of 15 cases in Huashan Hospital

Chinese Journal of Cancer Research 2013年第1期25卷 112-118页

作者： Hailiang Tang Huaping Sun Hong Chen Ye Gong Ying Mao Qing Xie Liqian Xie Mingzhe Zheng Daijun Wang Hongda Zhu Xiaoming Che Ping Zhong Kang Zheng Shiqi Li Weimin Bao Jianhong Zhu Xuanchun Wang Xiaoyuan Feng Xiancheng Chen Liangfu Zhou Neurosurgery Department of Huashan Hospital Radiology Department of Huashan Hospital Neuropathology Department of Huashan Hospital Endocrinology Department of Huashan Hospital

Objective： metaplastic meningioma is a rare subtype of benign meningiomas, classified as WHO grade I with well prognosis. Here we presented our experiences on 15 cases of metaplastic meningioma, to investigate the clinicopathological features, therapies and prognosis of these cases. Methods： 15 patients underwent surgical treatment for intracranial metaplastic meningioma between 2001 and 2010 at Neurosurgery Department of Huashan Hospital, Shanghai, China. The clinical data, radiological manifestation, treatment strategy, pathological findings and prognosis of all patients were analyzed retrospectively. Results： Among the 15 cases （10 males and 5 females）, the age ranged from 22 to 74 years old （the mean age was 50.67-year old）. The clinical manifestations include headache, dizziness, seizure attack, vision decrease, and weakness of bilateral lower limbs. All the patients received surgical treatment, combined with radiotherapy in some cases. In the follow-up period, recurrence occurred in 2 cases, of which 1 patient died of other system complications. Conclusions： metaplastic meningiomas are characterized by focal or widespread mesenchymal differentiation with formation of bone, cartilage, fat, and xanthomatous tissue elements. Surgical removal is the optimal therapy, and the overall prognosis is well. But recurrence may occur in some cases, thus radiotherapy is necessary for such kind of patients.

关键词： metaplastic meningioma follow-up mesenchymal differentiation

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metaplastic meningioma with pure and extensive cartilaginous transformation: A diagnostic dilemma

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Case Reports in Clinical Medicine 2013年第7期2卷 390-394页

作者： Oumar Coulibaly Justin Onen Amal Harmouch Boutarbouh Majhouba Adil Melhaoui Yasser Arkha Loubna Rifi Said Derraz Sanaa Sefiani Abdessamad El Ouahabi Abdeslam El Khamlichi Department of Neurosurgery Hopital des SpécialitésCHU Ibn SinaRabat-SaléMorocco Department of Pathology Hopital des SpécialitésCHU Ibn SinaRabat-SaléMorocco

meningiomas are the most common extra-axial central nervous system tumours and often discovered in the middle to late adult life and especially in women. About 85%-90% of meningiomas are benign, 5%-10% are intermediate-grade, and 3%-5% are malignant. metaplastic meningioma is a rare subtype of WHO Grade I meningioma histologically characterized by the presence of mesenchymal components. The presence of pure and extensive cartilaginous differentiation in meningiomas is extremely rare and remains a diagnostic dilemma. We report, perhaps the first case of this entity in a 52-year-old woman and discuss the pathogenesis, the imaging features and the histopathologicals data.

关键词： meningioma metaplastic meningioma Pure Cartilaginous Differentiation Diagnostic Dilemma

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