YAN Xiao-ling
Department of Pathology,Tianjin Huanhu Hospital,Tianjin 300350,China(Email:ll934065@126.com)
·臨床醫(yī)學(xué)圖像·
透明細(xì)胞型室管膜瘤
YAN Xiao-ling
Department of Pathology,Tianjin Huanhu Hospital,Tianjin 300350,China(Email:ll934065@126.com)
Clear cell ependymoma
圖1 光學(xué)顯微鏡觀察顯示,腫瘤細(xì)胞密集排列,似少突膠質(zhì)細(xì)胞樣,可見核周空暈 HE染色 ×100 圖2 光學(xué)顯微鏡觀察顯示,腫瘤細(xì)胞胞質(zhì)表達(dá)GFAP 免疫組織化學(xué)染色(EnVision二步法) ×100Figure 1 Optical microscopy findings showed clear cell ependymoma had high cell density,resembling oligodendroglioma with clear perinuclear haloes. HE staining ×100 Figure 2 Optical microscopy findings showed tumor cells were positive for GFAP in cytoplasm.Immunohistochemical staining(EnVision) ×100
2016年世界衛(wèi)生組織(WHO)中樞神經(jīng)系統(tǒng)腫瘤分類將透明細(xì)胞型室管膜瘤定義為室管膜瘤的一個(gè)亞型,以細(xì)胞呈少突膠質(zhì)細(xì)胞樣,可見核周空暈為特點(diǎn),好發(fā)于青年幕上部位。組織學(xué)形態(tài)觀察,腫瘤細(xì)胞呈現(xiàn)少突膠質(zhì)細(xì)胞樣表型,胞質(zhì)透明形成核周空暈(圖1),常為幕上富血管腫瘤,偶見于顱后窩和脊髓。免疫組織化學(xué)染色可見室管膜和血管周圍“菊形團(tuán)”樣結(jié)構(gòu),表達(dá)膠質(zhì)纖維酸性蛋白(GFAP,圖2)和上皮膜抗原(EMA)。超微結(jié)構(gòu)觀察有助于鑒別診斷。透明細(xì)胞型室管膜瘤較其他亞型更具侵襲性。
10.3969/j.issn.1672-6731.2017.11.015
(天津市環(huán)湖醫(yī)院病理科閻曉玲供稿)