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	Meningioma
		A meningioma is a benign (non-cancerous) tumour that grows out of the meninges, particularly the one known as the arachnoid layer (so called because it looks like a web).
		In rare cases, this isn’t always possible because the meningioma is inaccessible, or parts may have invaded important blood vessels or nerves.
		However, meningiomas in hard-to-reach locations (such as underneath the brain) are difficult to remove because they are surrounded by so many vital structures.
	betterhealth.vic.gov.au /bhcv2/bhcarticles.nsf/pages/Meningioma?Open (883 words)

	Meningiomas
		A meningioma grows from the arachnoid gap cells that form the middle layer, the arachnoid mater, and are usually attached to the dura.
		Symptoms of a convexity meningioma are seizures, focal neurological deficits, or headaches.
		Because of the slow growth of meningiomas, elderly patients with this tumor may be monitored instead of undergoing surgical removal of the tumor.
	www.mayfieldclinic.com /PE-MENI.htm (2003 words)

	Meningioma : Cancerbackup
		A meningioma is a tumour of the meninges, which are the protective membranes around the brain and spinal cord (see figure 1).
		Meningiomas are usually slow-growing tumours and the main symptoms arise from increased pressure within the skull (raised intracranial pressure).
		Meningiomas can grow in different parts of the brain and symptoms will relate to the area of the brain that is affected.
	www.cancerbackup.org.uk /Cancertype/Brain/Typesofbraintumour/Meningioma (1487 words)

	Meningioma (Site not responding. Last check: 2007-10-24)
		The meningioma is a tumor of the brain tumor which arrises from the dura mater, the tough outer covering of the brain.
		Cytokeratin expression was detected in 75% of malignant meningiomas, 0% of benign meningiomas, and 100% of metastatic carcinomas.
		DNA Topoisomerase II-alpha and Cyclin A Immunoexpression in Meningiomas and Its Prognostic Significance.
	www.thedoctorsdoctor.com /diseases/meningioma.htm (11775 words)

	eMedicine - Meningioma, Sphenoid Wing : Article by Sally B Zachariah, MD
		The relative incidence of meningiomas of the sphenoid ridge is 17%.
		The incidence of abnormality on chromosome 22 increases in atypical and malignant meningiomas.
		A better visualization of en plaque growth of the meningioma along the convexity of the cerebral hemisphere on the left side is seen, in addition to better illustration of intracavernous carotid arteries bilaterally and en plaque growth of meningioma inferiorly and laterally around both temporal lobes.
	www.emedicine.com /oph/topic670.htm (4620 words)

	Medcyclopaedia - Meningioma
		Meningiomas frequently cause hyperostosis of the inner table and can extensively penetrate the skull, causing marked thickening of the bone and osteoblastic reaction.
		Ten percent are infratentorial and arise from the petrous bone in the cerebellopontine angle, the clivus, the tentorium and the tentorial incisura.
		Rarely meningiomas are intraventricular, from the choroid plexus or the tela choroidea, or arise from the optic nerve sheath and in the pineal region.
	www.medcyclopaedia.com /library/topics/volume_vi_1/m/MENINGIOMA.aspx (874 words)

	Meningiomas - CyberKnife Stereotactic Radiosurgery System (Site not responding. Last check: 2007-10-24)
		Meningiomas are believed to grow from the meningeal layer of membranes that is located between the skull and the brain, hence, the name of the tumor.
		Meningiomas are much more common in women (with a female to male ratio of 4:1), and older individuals with a peak incidence in the 50 to 70 year range.
		Cavernous sinus meningioma: These meningiomas are located in a region called the cavernous sinus, and often are wrapped around critical nerves that control eye movement and feeling in the face.
	www.cksociety.org /PatientInfo/MedicalConditions/meningiomas.asp (2317 words)

	eMedicine - Meningioma : Article by Georges Haddad, MD
		Internationally: The frequency of meningiomas in Africa is nearly 30% of all primary intracranial tumors.
		Meningiomas in the vicinity of the sella turcica may produce panhypopituitarism.
		A, Fibroblastic meningioma (arrowheads) abutting the dura (arrow).
	www.emedicine.com /NEURO/topic209.htm (5492 words)

	Meningioma - WrongDiagnosis.com
		Meningiomas (mostly WHO grade I, with some WHO grade II or III) are generally slow growing, benign tumors attached to the dura mater and are composed of neoplastic meningothelial (arachnoidal) cells.
		Meningioma is listed as a "rare disease" by the Office of Rare Diseases (ORD) of the National Institutes of Health (NIH).
		This means that Meningioma, or a subtype of Meningioma, affects less than 200,000 people in the US population.
	www.wrongdiagnosis.com /m/meningioma/intro.htm (600 words)

	Meningioma (Site not responding. Last check: 2007-10-24)
		Meningiomas represent about 15 percent of all primary brain tumors and 12 percent of all spinal cord tumors.
		A meningioma is a brain tumor that grows in the meninges, a thin layer of tissue covering the brain and spinal cord.
		Meningiomas grow very slowly, and it is often many years before they become symptomatic.
	www.health-alliance.com /learnabout/learn_Meningioma.htm (408 words)

	Asymmetric Cranial Hyperostosis on Bone Scintigraphy
		At the time that she complained of headache, nausea, and personality change, a mass was seen on CT in the right frontal area (arrow) which enhanced with contrast.
		The incidence of meningiomas in breast cancer patients is twice the expected value, suggesting an association between the two malignancies.
		It is hypothesized that implantation of blood borne metastases into a meningioma occurs due to the presence of a rich vascular supply and high lipid content.
	www.med.harvard.edu /JPNM/BoneTF/Case15/WriteUp15.html (670 words)

	Meningioma (Site not responding. Last check: 2007-10-24)
		Meningiomas arise from the leather-like layer of tissue covering the brain and spinal cord, called the meninges.
		Meningiomas can occur in any part of the brain or spinal cord but are usually sited on the inside of the skull.
		Radiotherapy may be used when the meningioma is not completely removed by the surgery or can't be operated on safely because of the site of the meningioma.
	www.braintumouraction.org.uk /meningioma.htm (713 words)

	Meningioma Links
		Meningioma Mommas is a unique 24/7 online support group for everyone affected by a meningioma brain tumor.
		The Meningioma List is an online group provided by The Healing Exchange BRAIN TRUST, a charitable organization that helps people who are affected by brain tumors and related conditions.
		Hundreds of meningioma survivors and their family members exchange email messages through this group, sharing support and information with each other.
	www.brighamandwomens.org /neurosurgery/meningioma/meningiomalinks.asp (289 words)

	Meningioma (Site not responding. Last check: 2007-10-24)
		The cell of origin for the meningioma is call the arachnoid cap cell, found on the surface coverings (called meninges) of the brain in the paccionian granulations.
		In fact, it is exceedingly difficult for the pathologist to distinguish the meningioma from the fibroid tumors of the utereus under the microscope.
		A cousin to the meningioma is the hemangiopericytoma.
	www.brain-surgery.com /mening.html (482 words)

	MENINGIOMA (Site not responding. Last check: 2007-10-24)
		A meningioma is a tumor generally located along the surface of the brain, spinal cord, or along a spinal nerve root.
		Meningiomas are typically slow-growing tumors that occur nearly twice as commonly in women.
		Occasionally, meningiomas may irritate the surface of the brain, and patients may have epilepsy (seizure disorder) before or after surgical removal.
	www.apma-nc.com /PatientEducation/meningioma.htm (439 words)

	uhrad.com - Neuroradiology Imaging Teaching Files (Site not responding. Last check: 2007-10-24)
		The magnetic resonance imaging characteristics of meningioma are generally characterized by isointensity to relative hypointensity on T1 weighted images to the contiguous gray matter.
		Although meningiomas are histologically benign, they may invade surrounding structures including the dura and contiguous bony structures.
		Meningiomas may occasionally have an atypical appearance and atypical enhancement pattern secondary to necrosis, scarring, previous hemorrhage, or fat deposition.
	www.uhrad.com /mriarc/mri036.htm (361 words)

	Meningioma (Site not responding. Last check: 2007-10-24)
		Meningiomas are supplied with blood by arteries that run through the dura or from small "parasitized" arteries on the surface of the brain.
		The rate at which meningiomas grow correlates to some extent to the histology (characteristics of the cells that make up the tumor).
		When a meningioma is removed it is common to see the inside of the bone flap with a focal thickening of bone corresponding to a location directly over a tumor whose outline can frequently be seen through it even before the dura is cut.
	uscneurosurgery.com /infonet/glossary/m/meningioma.htm (263 words)

	Meningiomas Brain Tumors
		Meningiomas are benign tumors that develop in the thin membranes, or meninges, that cover the brain and spinal cord.
		Although this is usually unnecessary, it is essential for diagnosing chronic or subacute meningitis or for identifying benign hypertension inside the skull.
		Surgery, particularly for medium to large meningioma brain tumors, is more successful than for most other brain tumor types and is the preferred treatment for accessible meningiomas.
	www.csmc.edu /5301.html (324 words)

	Meningioma - VeterinaryPartner.com - a VIN company!
		The meningioma is probably the most common cause of seizures in dogs over age 6 years of age.
		Meningiomas are classified based on the different cell types they involve.
		Meningiomas are usually benign in that they do not spread to other body areas.
	www.veterinarypartner.com /Content.plx?P=A&S=0&C=0&A=1995 (906 words)

	Management of Meningiomas (File 16): TENTORIAL MENINGIOMA
		In larger meningiomas involving the tentoiial edge, angiography should be done to define the location of the arterial branches and determine the status of the transverse sinus (FIG.
		A subtemporal approach is used for tumors involving the medial edge, with preservation of the vein of Labbe and avoidance of excessive retraction on the temporal lobe.
		In 12 patients the meningioma involved the posterior and/or lateral tentorium and in some cases the transverse sinus and/or petrous dura.
	neurosurgery.mgh.harvard.edu /CranialBaseCenter/mening16.htm (890 words)

	meningioma info from Cedars-Sinai Maxine Dunitz Neurosurgical Institute
		Considered benign tumors, meningiomas are believed to arise from the cells in the meninges (coverings of the brain and spine).
		Meningiomas rarely invade or spread to other parts of the body.
		The goal of surgery is always to remove the meningioma totally, including the fibers that attach it to the coverings of the brain and bone.
	www.csmc.edu /meningioma.asp (207 words)

	What is Meningioma?
		Meningioma is the the most common brain tumor in dogs.
		That means, unless treated, the meningioma will continue to grow larger and larger.
		This specialist in diseases of the nervous system in dogs is your best source for experience in diagnosing and treating a possible brain tumor.
	www.jojoreader.com /reader/what.html (320 words)

	Meningioma - MayoClinic.com
		Meningioma is a noncancerous (benign) brain tumor that originates in the cells of the outer covering of the brain (meninges).
		Meningiomas occur more often in women than in men.
		Signs and symptoms of meningioma depend on the location and size of the tumor.
	www.mayoclinic.com /health/meningioma/HQ01074 (263 words)

	Treatment
		Meningioma is a benign tumor so, a veterinary neuro-surgeon can probably operate to remove it.
		Because meningioma is benign, these cells won't spread to other parts of the body.
		Many dogs that develop meningiomas are in their senior years, and there is a chance that they may succumb from some unrelated problem — for example, an unrelated cancer, heart disease or kidney failure — before the tumor grows back.
	www.jojoreader.com /reader/treat.html (731 words)

	ThirdAge: Meningioma
		A meningioma is a tumor of the protective lining of the brain and spinal cord.
		Most meningiomas are benign, though some may be malignant.
		Symptoms of meningioma are usually related to the area of the brain that is affected.
	www.thirdage.com /healthgate/files/22830.html (616 words)

	MIR Teaching file case ot005 (Site not responding. Last check: 2007-10-24)
		Among the more common causes of activity in the head during octreotide scintigraphy are metastases from somatostatin positive tumors, meningiomas, well-differentiated astrocytomas (but not in undifferentiated glioblastomas), and in pituitary adenomas.
		The patient had a history of a long-standing, stable meningioma adjacent to the left cavernous sinus.
		Her previous MRI studies were obtained and the meningioma was demonstrated to correspond with the increased activity on the octreoscan image.
	gamma.wustl.edu /ot005te113.html (202 words)

	Meningiomas & Benign Brain Tumors Homepage at MGH/Harvard
		Neurosurgeons specializing in the treatment of meningiomas and other benign brain tumors.
		Computer assisted surgical planning is also employed as needed to ensure that menigioma removal is accomplished with the lowest risk possible.
		Addresses and telephone numbers of the members of the neurosurgical oncology staff can be obtained at their homepages by selecting the highlighted names.
	neurosurgery.mgh.harvard.edu /meninghp.htm (746 words)

	Meningioma UK (Site not responding. Last check: 2007-10-24)
		Meningioma UK We are Meningioma UK, the national support group dedicated to giving help and information to people diagnosed with this type of brain or spinal tumour.
		We are meningioma patients who wanted to provide support for people like ourselves who are coping with this type of brain or spinal tumour.
		The group is open to everyone with an interest in meningioma, whether patient, carer or medical professional.
	www.meningiomauk.org (680 words)

	Meningioma
		The meningioma is probably the most common cause of seizures in dogs over age six years of age.
		Meningiomas are generally benign, meaning that they do not create “cancer.” They do not spread to other areas of the body or invade and destroy tissue local to them.
		The reason they are a problem is that there is a limited amount of space within the skull.
	www.marvistavet.com /html/body_meningioma.html (888 words)

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