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Pilomyxoid Astrocytoma Presenting in an Elderly Patient:A Case Report Keisuke TOYODA 1 , Keisuke TSUTSUMI 1 , Tomonori ONO 1 , Hideaki TAKAHATA 1 , Keisuke TODA 1 , Masahiro ITO 2 , Yasuo SUGITA 3 , Tomoko MASUDA 4 , Katsuhiro ICHINOSE 4 , Hiroshi BABA 1 , Masahiro YONEKURA 1 1Department of Neurosurgery,National Nagasaki Medical Center 2Department of Pathology,National Nagasaki Medical Center 3Department of Pathology,Kurume University 4Department of Neurology,National Nagasaki Medical Center Keyword: pilomyxoid , astrocytoma , advanced age , adult , elderly pp.1123-1128
Published Date 2009/11/10
DOI https://doi.org/10.11477/mf.1436101058
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 A 77-year-old man presented with progressive visual disturbance. MR images revealed a mass lesion mainly spreading in the left basal cistern, sylvian fissure and to the left hypothalamic region, with ventricular enlargement. To obtain precise diagnosis of the mass lesion, an open biopsy was performed. The pathological diagnosis was pilomyxoid astrocytoma (PMA). The patient was discharged without adjuvant therapy. A Ventriculoperitoneal shunt procedure was performed afterwards because his hydrocephalic symptoms progressed.

 PMA is a rare tumor newly added to the glioma section by the WHO classification renewed in 2007,and generally develops in infancy. To our knowledge,there are only four adult cases being reported. In those cases,the symptoms of the disease developed during the second to fourth decade of life. The onset at a more advanced age as in the present case seems to be extremely rare. The treatment strategy described in infant cases is similar to that for pilocytic astrocytoma,but there are only few reports. To establish a treatment protocol for adult patients,further more cases are needed to accumulate knowledge of this rare brain tumor.


Copyright © 2009, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1251 印刷版ISSN 0301-2603 医学書院

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