Equine papillary ependymoma

被引:24
作者
Carrigan, MJ [1 ]
Higgins, RJ [1 ]
Carlson, GP [1 ]
Naydan, DK [1 ]
机构
[1] UNIV CALIF DAVIS,SCH VET MED,DEPT PATHOL MICROBIOL & IMMUNOL,DAVIS,CA 95616
关键词
equine; central nervous system; horses; immunocytochemistry; papillary ependymoma; ultrastructure;
D O I
10.1177/030098589603300109
中图分类号
R36 [病理学];
学科分类号
100104 ;
摘要
A 17-year-old Arabian gelding with progressive neurologic signs had a velvety, reddish brain tumor protruding from the ventral midline caudal to the optic chiasma. Histologically, the tumor had a papillary formation with a single layer of elongate cells radially oriented around a central fibrovascular core. Intracytoplasmic globular inclusions were positive for glial fibrillary acidic protein and weakly positive for vimentin. Ultrastructurally, these inclusions were comprised of whorling intermediate filaments. Neoplastic cells also had cytoplasmic interdigitations and numerous zona adherens and often rested on a basal lamina. The tumor was diagnosed as a papillary ependymoma.
引用
收藏
页码:77 / 80
页数:4
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