摘要:非典型畸胎样/横纹肌样瘤(atypical teratoid/rhabdoid tumor,AT/RT)是中枢神经系统罕见的侵袭性肿瘤,主要发生于婴儿。成人罕见,但累积的病例显示,成人特异性AT/RT好发于鞍区。既往报道的12例鞍区病例仅发生在成年女性,提示成人与经典婴儿AT/RT存在生物学差异。因此,我们研究了6例鞍区AT/RT的组织病理学、INI1/SMARCB1基因的分子特征和临床过程。6例患者均为成年女性,年龄为21~69岁。肿瘤组织学形态表现为,在致密、弥漫性增生且混杂有小部分分散横纹肌样细胞的组织内存在类似血管外皮细胞瘤鹿角样血管。这种血管的生长方式在 AT/RT中不常见,似乎是鞍区AT/RT的特征性表现。5例中的4例经荧光原位杂交、直接测序、多重连接探针扩增分析方法确定有INI1基因的双等位基因变化。发现4例中的3例有2种不同的突变,可能位于不同的等位基因上(复合杂合性突变);1例有剪接位点突变。结合既往的研究结果,鞍区AT/RT的复合杂合性和剪接位点的突变率显著高于儿童AT/RT。鞍区AT/RT以独有的人群特征、INI1基因的不同突变方式、特征性的血管生长方式为特点,代表着一类临床病理和遗传学特征不同于经典AT/RT的变异型。
关键词:非典型畸胎样/横纹肌样瘤,鞍区,INI1,鹿角样血管
来源:Am J Surg Pathol 2017;41:932–940
美国外科病理学杂志中文版2018年第一期全文No.4
(管雯斌/王瑞芬/乔萌 翻译 王立峰 审校)
The American Journal of Surgical Pathology中文版声明:
©2018 Wolters Kluwer Health
The material is published by Wolters Kluwer Health with the permission of American Journal of Surgical Pathology.No part of this publication may be reproduced in any form,stored in a retrieval system or transmitted in any form,by any means,without prior written permission from Wolters Kluwer Health.Opinions expressed by the authors and advertisers are not necessarily those of the American Journal of Surgical Pathology, its affiliates,or of the Publisher.The American Journal of Surgical Pathology,its affiliates,and the Publisher disclaim any liability to any party for the accuracy,completeness,efficacy,or availability of the material contained in this publication (including drug dosages) or for any damages arising out of the use or non-use of any of the material contained in this publication.
Although advertising material is expected to conform to ethical (medical) standards,inclusion in this publication does not constitute a guarantee or endorsement of the quality or value of such product or of the claims made of it by its manufacturer.
【本文经《美国外科病理学杂志》授权发布,其他媒体转载或引用须经《美国外科病理学杂志》同意 ,否则追究法律责任;所有文章仅供公益交流,不代表本站立场。欢迎提供素材、资料等,投稿邮箱: tougao@91360.com,一经采纳将给予稿费】
【本文经《美国外科病理学杂志》授权发布,其他媒体转载或引用须经《美国外科病理学杂志》同意 ,否则追究法律责任;所有文章仅供公益交流,不代表本站立场。欢迎提供素材、资料等,投稿邮箱: tougao@91360.com,一经采纳将给予稿费】
我要评论