• 作者：Javier Ortiz Rodrí ; guez-Parets ; ^{jortiz@usal.es} ; Marí ; a Auxiliadora Aparicio ; Agustó ; n Bulló ; n Sopelana
• 关键词：Meningioma de cé ; lulas claras ; Histologí ; a ; Inmunohistoquí ; mica
• 刊名：Revista Espa?ola de Patolog¨ªa
• 出版年：2010
• 出版时间：April-June 2010
• 年：2010
• 卷：43
• 期：2
• 页码：120-122
• 全文大小：798 K

The morphological and immunohistochemical findings of a clear cell meningioma found in the cauda equina of a 25 year old patient are reported. The tumour was predominately nodular with a marked presence of cells with clear cytoplasm which stained positively for PAS.

The presence of meningoteliomatous areas in the tumour, together with the immunohistochemistry of the tumour cells (positivity for vimentin and EMA and negativity for cytokeratins, CD10, HMB45 and PGFA) were the diagnostic features that differentiated the tumour from other possible diagnoses, principally metastases from a renal carcinoma. The characteristics of this type of meningioma, which has an intermediate grade of malignancy (WHO grade ii meningioma) are discussed.