pleomorphic xanthoastrocytoma

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ple·o·mor·phic xan·tho·as·tro·cy·to·ma

a rare variant of astrocytoma usually presenting early in life with seizures. The tumor is superficially located and composed of pleomorphic glial cells, lipidized astrocytes, and perivascular lymphocytes.
Synonym(s): xanthoastrocytoma

pleomorphic xanthoastrocytoma

(zan″thō-as″trŏ-sī-tō′mă) [ xantho- + astrocytoma],


A rare, relatively slow-growing astrocytoma composed of cells of many sizes and shapes. The tumor is usually diagnosed in adolescents and young adults. Microscopic specimens often reveal fatty cells, fibrillar cells, and involvement of the leptomeninges of the brain.
References in periodicals archive ?
It has therefore been proposed that PXA with MI [greater than or equal to] 5/10 HPF with or without necrosis be known as "PXA with anaplastic features", because of the greater possibility of being more aggressive than those without such histological findings (9).
4 The characteristic histopathological features of PXA include: large pleomorphic cells, prominent eosinophilic granular bodies, lipidized astrocytes, focal perivascular lymphocytes, abundant reticulin network, absent or scant mitoses, and absent necrosis.
Acting as a broadband down converter, the PXA translates the desired microwave or millimeter wave signal down to an IF frequency and then supplies it to an Agilent Infiniium 9000 or 90000 Series oscilloscope running 89600 VSA software where it is digitised and analysed, respectively.
4-9] The clinical and radiological features of the 12 reported cases of combined PXA-GG are virtually identical to those of pure PXA or GG.
In this paper we report a case of a 10-year-old girl, with clinical of Bravais-Jacksonian seizures due to PXA localization in primary motor area, which made resection a challenge.
Each Apex XP offers high-resolution image through the use of BAK-4 glass and PXA phase coating.
Tatvik supports codecs on virtually every processor/DSP including ARM9, ARM11, Cortex-A8, XScale PXA27x, PXA 32x, MIPS, ZSP500, Renesas SH3, SH4, TI C64x+, x86) on wide variety of platforms (Symbian, Windows Mobile, Linux, Android, iOS, uITRON, QNX, Win XP, Win Vista, Win 7).
Alpen's Bak-4 prisms, combined with fully multicoated and PXA phase coatings, help enhance brightness, clarity and color.
The fully isolated PXA and PXB Series have a 1 x 1-inch footprint and are designed for applications ranging from communications to factory automation equipment.
The UPMC is built with an Intel PXA 270 Xscale 520 MHz processor, the base unit includes 256MB of RAM and a 20GB hard drive.