·臨床醫(yī)學圖像·
腦膜黑色素細胞瘤
圖1 光學顯微鏡觀察所見 HE染色 1a“編織”狀間質(zhì)內(nèi)可見巢片狀富含黑色素的梭形腫瘤細胞 ×200 1b 腫瘤細胞胞核呈橢圓形或豆形,核仁可見、呈嗜酸性 ×400Figure 1 Optical microscopy findings HE staining Spindle tumor cells rich in melanin were arranged in nests within"braided"mesenchyma(Panel 1a). ×200 The nuclei of tumor cells were oval or bean?shaped,with eosinophilic nucleoli(Panel 1b). ×400
腦膜黑色素細胞瘤是一種源于軟腦膜黑色素細胞,組織學形態(tài)分化良好,呈實性、非浸潤性的黑色素細胞瘤,是一種孤立性、不伴周圍組織浸潤的低級別腫瘤。組織學形態(tài)特征性表現(xiàn)為上皮樣、紡錘形、多形或梭形黑色素細胞,無間變、壞死,核分裂象少見;梭形或橢圓形腫瘤細胞內(nèi)含有數(shù)目不等的黑色素,呈緊密巢狀,類似腦膜瘤“漩渦”樣結(jié)構(gòu)(圖1a),邊緣可見富含黑色素的腫瘤細胞和巨噬細胞;胞核呈橢圓形或豆形,偶見核溝,核仁可見、呈嗜酸性(圖1b)。偶可見腫瘤復發(fā)。
(天津市環(huán)湖醫(yī)院病理科閻曉玲供稿)
Meningeal melanocytoma
YAN Xiao?ling
Department of Pathology,Tianjin Huanhu Hospital,Tianjin 300350,China(Email:ll934065@126.com)
10.3969/j.issn.1672?6731.2017.06.015