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	Astrocytoma - Wikipedia, the free encyclopedia
		Astrocytomas are primary intracranial tumors derived from astrocytes cells of the brain.
		In almost half of the cases, the first symptom of an astrocytoma is the onset of a focal or generalized seizure.
		Astrocytomas often recur even after treatment and are usually treated similarly as the initial tumor, with sometimes more aggressive chemotherapy or radiation therapy.
	en.wikipedia.org /wiki/Astrocytoma (436 words)

	Nikon MicroscopyU: Human Pathology Digital Image Gallery - Astrocytoma
		Astrocytoma at 20x Magnification - In children with astrocytoma, the tumors that occur are typically classified as low-grade neoplasms.
		Astrocytoma at 40x Magnification - Following diagnosis of astrocytoma, the first priority is generally to relieve any excess intracranial pressure, which can be achieved by administration of steroids to reduce swelling or through the application of a shunt to drain excess fluid.
		Astrocytoma at 10x Magnification - The lowest-grade astrocytomas, which are sometimes known as pilocytic gliomas, have a five-year survival rate of approximately 70 percent, but the outlook for patients with higher-grade tumors is significantly less propitious.
	www.microscopyu.com /galleries/pathology/astrocytoma.html (600 words)

	Astrocytoma/Glioma
		Astrocytomas are tumors that arise from brain cells called astrocytes.
		Astrocytomas are of two main types--high grade and low grade.
		High-grade astrocytomas can rarely be removed totally because they often affect large areas of the brain by the time symptoms are obvious.
	www.zoner.net /zoned/astrodef.html (594 words)

	Childhood Cerebral Astrocytoma/Malignant Glioma - National Cancer Institute
		Childhood cerebral astrocytoma is a disease in which benign (noncancer) or malignant (cancer) cells form in the tissues of the brain.
		The symptoms of childhood cerebral astrocytoma vary and often depend on the childâs age, where the tumor is located, and the size of the tumor.
		Astrocytomas are tumors that start in brain cells called astrocytes.
	www.cancer.gov /cancerinfo/pdq/treatment/child-cerebral-astrocytoma/patient (630 words)

	Astrocytoma Information on Healthline
		Astrocytoma is a tumor that arises from astrocytes, star-shaped cells that play a supportive role in the brain.
		Astrocytomas may occur in the cerebrum, the site of thought and language, the cerebellum, the area responsible for movement and muscle co-ordination, or the brainstem, the location that regulates critical activities like breathing and heartbeat.
		Astrocytomas are a type of glioma, a tumor of glial cells (specialized cells that give physical support and electrical insulation between neurons).
	www.healthline.com /galecontent/astrocytoma (1063 words)

	eMedicine - Astrocytoma : Article by Tobey MacDonald, MD (Site not responding. Last check: 2007-10-18)
		Astrocytomas of the brain stem are characterized by the presence of isolated cranial nerve deficits and contralateral hemiparesis.
		Astrocytoma is the most frequent CNS tumor in people with the Li-Fraumeni syndrome (germline mutation of the p53 tumor suppressor gene on the short arm of chromosome 17).
		Astrocytoma of the spinal cord: The overall survival rate for patients with low-grade astrocytomas with various degrees of resection and postoperative radiotherapy is 67% at 20 years, while those with high-grade tumors rarely survive.
	www.emedicine.com /ped/topic154.htm (5043 words)

	Childhood Cerebellar Astrocytoma: (Site not responding. Last check: 2007-10-18)
		Childhood cerebellar astrocytoma is a disease in which benign (noncancer) or malignant (cancer) cells form in the tissues of the brain.
		Childhood cerebellar astrocytoma is a disease in which benign (noncancer) or malignant (cancer) cells form in the tissues of the brain.
		For childhood cerebellar astrocytoma, the grade of the tumor is used instead of stages.
	www.acor.org /cnet/62783.html (2342 words)

	Astrocytoma : Cancerbackup (Site not responding. Last check: 2007-10-18)
		An astrocytoma is the most common type of glioma and develops from a type of star-shaped cell called an astrocyte.
		Astrocytomas in the cerebellum are more common in children or young people.
		Astrocytomas can grow in different parts of the brain and symptoms may relate to the area of the brain that is affected.
	www.cancerbackup.org.uk /Cancertype/Brain/Typesofbraintumour/Astrocytoma (1643 words)

	From the Archives of the AFIP: Pilocytic Astrocytoma: Radiologic-Pathologic Correlation -- Koeller and Rushing 24 (6): ...
		Pilocytic astrocytomas arising in the optic pathway or hypothalamus
		astrocytomas arising in the optic pathway, diencephalon, and
		Stereotactic resection of juvenile pilocytic astrocytomas of the thalamus and basal ganglia.
	radiographics.rsnajnls.org /cgi/content/full/24/6/1693 (6326 words)

	eMedicine - Astrocytoma : Article by Jeffrey Bruce, MD (Site not responding. Last check: 2007-10-18)
		For patients with anaplastic astrocytomas, the growth rate and interval between onset of symptoms and diagnosis is intermediate between low-grade astrocytomas and glioblastomas.
		Astrocytomas of the spinal cord or brainstem are less common and present with motor/sensory or cranial nerve deficits referable to the tumor's location.
		Gemistocytic astrocytomas generally are found in the cerebral hemispheres in adults and are composed of large round cells with eosinophilic cytoplasm and eccentric cytoplasm.
	www.emedicine.com /med/topic2693.htm (3893 words)

	Pediatric Neurosurgery, P.A. - Childhood Cerebral Astrocytoma (Site not responding. Last check: 2007-10-18)
		Childhood cerebral astrocytoma is a type of brain tumor in which cancer (malignant) cells begin to grow in the tissues of the brain.
		A cerebral astrocytoma occurs in the area of the brain called the cerebrum, which is at the top of the head.
		Treatment for cerebral astrocytoma depends on the type and stage of the disease and your child's age and overall health.
	www.pedneurosurgery.net /Childhood_cerebral_astrocytoma.htm (1353 words)

	Astrocytoma (Site not responding. Last check: 2007-10-18)
		Intracytoplasmic immunostaining for mos was found in 28 (45%) cases: 3 of 20 (15%) grade 2 astrocytomas, 9 of 20 (45%) grade 3 anaplastic astrocytomas, and 16 of 22 (73%) glioblastomas.
		Diffuse astrocytomas were graded according to the St Anne-Mayo scheme and included 45 grade 2, 50 grade 3, and 45 grade 4 astrocytomas.
		In diffuse astrocytomas, these values were 2.3, 2, and 0-7.6% in grade 2; 6, 4.4, and 0.1-25.7% in grade 3; 9.1, 6, and 0.3-36% in grade 4.
	www.thedoctorsdoctor.com /diseases/astrocytoma.htm (9610 words)

	Neuropathology Mini-Course
		Astrocytomas are largely tumors of adults but are still the leading primary brain tumor in children.
		Another type of slow growing astrocytoma is the protoplasmic astrocytoma, in which cystic degeneration of the cytoplasm is present and the processes are less prominent in this image.
		The cystic cerebellar astrocytoma should not be confused with hemangioblastoma, another benign cystic tumor of the cerebellum.
	www.pathology.vcu.edu /WirSelfInst/tumor-2.html (2739 words)

	Childhood Cerebral Astrocytoma/Malignant Glioma
		For childhood cerebral astrocytoma, the grade of the tumor is used instead of stages.
		High grade or malignant cerebral astrocytoma: Tumors that are fast-growing and may spread throughout the brain.
		Surgery is used to diagnose and treat childhood cerebral astrocytoma as discussed in the General Information section of this summary.
	www.meb.uni-bonn.de /cancer.gov/CDR0000257998.html (2713 words)

	Desmoplastic Astrocytoma (Site not responding. Last check: 2007-10-18)
		This rare brain tumor desmoplastic cerebral astrocytoma of infancy (DCAI) is a rare tumor that presents as a large hemispheric mass in infants.
		The desmoplastic cerebral astrocytoma of infancy (DCAI) is a rare tumor that presents as a large hemispheric mass in infants.
		Review of all of the previously reported cases of desmoplastic infantile cerebral astrocytoma and of the related neoplastic entity desmoplastic infantile ganglioglioma suggested that this was a unique case, but we still recommend caution with respect to the previously accepted notion that desmoplastic infantile neuroepithelial tumors are virtually benign neoplasms.
	www.thedoctorsdoctor.com /diseases/desmoplastic_astrocytoma.htm (1869 words)

	Anaplastic Astrocytoma - My Child Has - Children's Hospital Boston (Site not responding. Last check: 2007-10-18)
		An anaplastic astrocytoma is a high-grade, or malignant, glioma, a tumor of the glial (supportive) tissue of the brain.
		Anaplastic astrocytomas of the cerebral hemispheres and the diencephalon, so called supratentorial anaplastic astrocytomas, produce non-specific symptoms as a result of increased pressure within the head, as well as more localizing symptoms as a function of their specific location, rate of growth and associated inflammation.
		Near complete resection of anaplastic astrocytoma in combination with radiation therapy has been reported to produce a 5-year survival rate as high as 40 percent, whereas incompletely removed tumors were associated with a 20 percent 5-year survival rate.
	www.childrenshospital.org /az/Site565/mainpageS565P0.html (1650 words)

	Astrocytoma Brain Tumors
		Astrocytoma tumors are a form of glioma with star-shaped cells.
		Symptoms of an astrocytoma tumor vary depending on what part of the brain (or which glands or nerves) are affected by the tumor.
		An MRI usually finds low-grade astrocytomas earlier than CT. Cerebral angiography is rarely used to diagnose a brain tumor, but it may be done before surgery.
	www.csmc.edu /5298.html (403 words)

	Brain cancer, cerebellar astrocytoma, childhood: Treatment - Patient Information [NCI PDQ]
		Cerebellar astrocytomas start in the cerebellum, which is located at the lower back of the brain.
		Surgery is used to diagnose and treat childhood cerebellar astrocytoma as discussed in the General Information section of this summary.
		Untreated childhood cerebellar astrocytoma is a tumor for which no treatment has been given.
	www.meritcare.com /hwdb/showtopic.aspx?pd_hwid=ncicdr0000062783 (2301 words)

	Childhood cerebral astrocytoma
		Low-grade cerebral astrocytomas (pilocytic and fibrillary) have a relatively favorable prognosis, particularly if complete excision is possible.[1,2] There is no generally recognized staging system.
		Malignant astrocytoma is often locally invasive and extensive.[1,2] Spread via the subarachnoid space may occur.
		Although malignant astrocytoma carries a generally poor prognosis in younger patients, those with anaplastic astrocytoma disease and those in whom a gross total resection is possible may fare better.
	www.meds.com /pdq/childcerebral_pro.html (2211 words)

	ACS :: What Are Brain and Spinal Cord Tumors?
		Most astrocytomas cannot be cured because they spread widely throughout the surrounding normal brain tissue.
		In general terms, astrocytomas are classified, or graded, as low grade, intermediate grade, or high grade.
		They spread or infiltrate in a manner similar to astrocytomas and, in most cases, cannot be completely removed by surgery.
	www.cancer.org /docroot/CRI/content/CRI_2_4_1X_What_are_brain_and_spinal_cord_tumors_3.asp (2527 words)

	Medcyclopaedia - Astrocytoma
		Anaplastic astrocytoma and glioblastoma are more frequent in adults, whereas pilocytic astrocytoma is found primarily in children.
		In children, infiltrative astrocytomas are typically within the brain stem, and pilocytic astrocytoma in the cerebellum (Fig.1).
		Infiltrative astrocytomas have a worse prognosis, owing to their tendency to dedifferentiate into more malignant types and to spread locally and to the leptomeninges.
	www.medcyclopaedia.com /library/topics/volume_vi_1/a/ASTROCYTOMA.aspx (431 words)

	Medical Dictionary: Astrocytoma - WrongDiagnosis.com
		Astrocytoma: Astrocytic tumors are neoplasms of the brain and spinal cord derived from glial cells.
		Astrocytoma is listed as a "rare disease" by the Office of Rare Diseases (ORD) of the National Institutes of Health (NIH).
		Astrocytoma : neoplasms composed of astrocytes of the brain and spinal cord derived from glial cells which vary from histologically benign forms to highly anaplastic and malignant tumors.
	www.wrongdiagnosis.com /medical/astrocytoma.htm (422 words)

	Astrocytoma
		An astrocytoma is a tumor that arises from the star-shaped cells (astrocytes) that form the supportive tissue of the brain.
		Grade II astrocytoma is also called low-grade astrocytoma or diffuse astrocytoma and is usually an infiltrating tumor.
		Anaplastic astrocytoma occurs most often in adults between the ages of 30 and 60, is more common in men and accounts for 4% of all brain tumors.
	www.webmd.com /hw/brain_cancer/nord775.asp (619 words)

	Brain Tumor: Childhood Cerebral Astrocytoma
		This overview covers a type of tumor, cerebral astrocytoma, that starts in the brain (a primary brain tumor).
		Cerebral astrocytomas occur in the area of the brain called the cerebrum, which is located at the top of the head and is considered to be the seat of conscious mental processes.
		Often, surgery is needed to determine whether there is a brain tumor and what type of tumor it is. The doctor may surgically remove a small sample of the tumor tissue and examine it under a microscope.
	www.umm.edu /cancer/overview/brain-child-cerebral.html (244 words)

	Brain Cancer Childhood Cerebral Astrocytoma
		CancerMail from the National Cancer Institute Information from PDQ for Patients Childhood cerebral astrocytoma/malignant glioma 208/05741 DESCRIPTION -- What is childhood cerebral astrocytoma tumor -- Childhood cerebral astrocytoma is a type of brain tumor in which cancer (malignant) cells begin to grow in the tissues of the brain.
		Clinical trials are ongoing in most parts of the country for cerebral astrocytoma.
		Children younger than 3 years of age may be given chemotherapy to delay radiation therapy or so a lower dose of radiation may be given.
	www.medhelp.org /lib/cancernet/205741.htm (2060 words)

	Astrocytoma definition - Medical Dictionary definitions of popular medical terms
		Astrocytoma: A tumor that begins in the brain or spinal cord in small, star-shaped cells called astrocytes.
		In adults, astrocytomas most often arise in the cerebrum whereas in children, they may arise in the brain stem, cerebrum, and cerebellum.
		Astrocytomas are gliomas, brain tumors derived from glial, or supportive, cells.
	www.medterms.com /script/main/art.asp?articlekey=20827 (276 words)

	Columbia University Pilomyxoid Astrocytoma Resource
		Pilomyxoid astrocytoma (PMA) is a newly discovered type of brain tumor.
		In the past, this neoplasm was grouped together with pilocytic astrocytoma (PA), a slow-growing and benign tumor.
		Recently, however, it has been shown that PMA demonstrates unique histological features that allow it to be differentiated from PA. Furthermore, PMA tends to behave aggressively and carry a poor prognosis, with significantly shorter survival than typical PA, as well as a high rate of metastasis throughout the nervous system.
	www.pilomyxoid.com (152 words)

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