title: Fine-needle aspiration of metastatic sacrococcygeal myxopapillary ependymoma.
abstract: A 45-yr-old white woman with a 24-yr history of sacrococcygeal myxopapillary ependymoma developed a large metastasis of scalp and skull diagnosed as metastatic ependymoma on fine-needle aspiration, based on cytologic features, histologic pattern in cell block fragments, and a positive reaction with the glial fibrillary acidic protein immunoperoxidase study. The fine-needle study obviated the need for biopsy in this case, for which a surgical approach was considered to be inappropriate due to the extent of the process demonstrated by various imaging techniques.
mesh_terms: D001707:Biopsy, Needle / Q000379:methods; D004806:Ependymoma / Q000175:diagnosis / Q000473:pathology / Q000556:secondary*; D005260:Female; D005904:Glial Fibrillary Acidic Protein / Q000032:analysis; D006651:Histocytochemistry; D006801:Humans; D007124:Immunoenzyme Techniques; D008875:Middle Aged; D012445:Sacrococcygeal Region / Q000473:pathology
chemical_list: D005904:Glial Fibrillary Acidic Protein