About: Arterial-venous malformation

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About: Arterial-venous malformation Sponge Permalink

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AVMs are usually congenital and belong to the RASopathies. The genetic transmission patterns of AVM, if any, are unknown. AVM is not generally thought to be an inherited disorder, unless in the context of a specific hereditary syndrome. The most general symptoms of a cerebral AVM include headache and epilepsy, with more specific symptoms occurring that normally depend on the location of the malformation and the individual. Such possible symptoms include: Cerebral AVMs may present in a number of ways:

Attributes	Values
rdfs:label	Arterial-venous malformation
rdfs:comment	AVMs are usually congenital and belong to the RASopathies. The genetic transmission patterns of AVM, if any, are unknown. AVM is not generally thought to be an inherited disorder, unless in the context of a specific hereditary syndrome. The most general symptoms of a cerebral AVM include headache and epilepsy, with more specific symptoms occurring that normally depend on the location of the malformation and the individual. Such possible symptoms include: Cerebral AVMs may present in a number of ways:
dcterms:subject	Diseases
symptom	Bleeding Seizure Headache
dbkwik:house/prope...iPageUsesTemplate	dbkwik:resource/2pprzMEqwVk7gNVcrxanIg== dbkwik:resource/Upz-fkP1JXO0-kISSOYWHw==
Appearances	DNR Resignation Top Secret
Name	Arterial-venous malformation
treatment	Surgery
Cause	Usually genetic
abstract	AVMs are usually congenital and belong to the RASopathies. The genetic transmission patterns of AVM, if any, are unknown. AVM is not generally thought to be an inherited disorder, unless in the context of a specific hereditary syndrome. Symptoms of AVM vary according to the location of the malformation. Roughly 88% of people affected with AVM are asymptomatic; often the malformation is discovered as part of an autopsy or during treatment of an unrelated disorder (called in medicine "an incidental finding"); in rare cases its expansion or a micro-bleed from an AVM in the brain can cause epilepsy, deficit or pain. The most general symptoms of a cerebral AVM include headache and epilepsy, with more specific symptoms occurring that normally depend on the location of the malformation and the individual. Such possible symptoms include: * Difficulties with movement or coordination, including muscle weakness and even paralysis; * Vertigo (dizziness); * Difficulties of speech (dysarthria) and communication, such as aphasia; * Difficulties with everyday activities, such as apraxia; * Abnormal sensations (numbness, tingling, or spontaneous pain); * Memory and thought-related problems, such as confusion, dementia or hallucinations. Cerebral AVMs may present in a number of ways: * Hemorrhage (45% of cases) * Acute onset of severe headache. May be described as the worst headache of the patient's life. Depending on the location of hemorrhage, may be associated with new fixed neurologic deficit. In unruptured brain AVMs, the risk of spontaneous hemorrhage may be as low as 1% per year. After a first rupture, the annual bleeding risk may increase to more than 5%. * Seizure (46%) * Headache (34%) * Progressive neurologic deficit (21%) * May be caused by mass effect or venous dilatations. Presence and nature of deficit depend on location of lesion and the draining veins. * Pediatric patients: * Heart failure * Macrocephaly * Prominent scalp veins

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