{"id":10182,"date":"2021-04-24T23:15:38","date_gmt":"2021-04-24T20:15:38","guid":{"rendered":"https:\/\/ozgurkilickesmez.com\/?p=10182"},"modified":"2026-10-13T22:31:42","modified_gmt":"2026-10-13T19:31:42","slug":"arteriovenous-malformations-avm","status":"publish","type":"post","link":"https:\/\/ozgurkilickesmez.com\/en\/arteriovenous-malformations-avm\/","title":{"rendered":"Arteriovenous Malformations (AVM): Types, Symptoms, Causes and Treatment"},"content":{"rendered":"

Arteriovenous malformations (AVM) are abnormal connections between arteries and veins that disrupt normal blood circulation. They may cause pain, bleeding, or neurological symptoms, and require precise diagnosis and individualized treatment strategies.<\/span><\/p>\n

Interventional radiology offers minimally invasive options for AVM treatment. Embolization techniques block abnormal blood flow, shrink malformations, and reduce risks of rupture, often as a standalone therapy or in preparation for surgery.<\/span><\/p>\n

AVMs can occur in various organs including the brain, lungs, and extremities. Clinical presentation depends on location, with cerebral AVMs posing risks of seizures and hemorrhage, while peripheral AVMs often cause swelling and pain.<\/span><\/p>\n

Advanced imaging methods such as MRI and angiography are essential in diagnosis and treatment planning. These modalities provide detailed vascular mapping, enabling safe and effective interventional or surgical approaches tailored to each patient.<\/span><\/p>\n\n\n\n<\/colgroup>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Definition<\/td>\nArteriovenous malformation (AVM) is an abnormal connection between arteries and veins. These connections are congenital and characterized by the lack of a normal capillary bed. They can occur anywhere in the body.<\/td>\n<\/tr>\n
Causes<\/td>\nCongenital (genetic) with an unknown exact cause. Genetic factors may play a role.<\/td>\n<\/tr>\n
Symptoms<\/td>\nIn those located in the brain, symptoms can include headaches, seizures, neurological deficits (vision, speech, or movement disorders), dizziness, tinnitus, bleeding (intracranial bleeding), and loss of consciousness. In extremities, body areas, or musculoskeletal systems, swelling, pain, discoloration, and the presence of a murmur are common findings. Rarely, they may thin the skin and cause bleeding.<\/td>\n<\/tr>\n
Diagnostic Methods<\/td>\nMRI and MR angiography, computed tomography (CT) and CT angiography, angiography, Doppler ultrasound<\/td>\n<\/tr>\n
Treatment Methods<\/td>\nMicrosurgical resection, endovascular embolization, stereotactic radiosurgery (Gamma Knife or CyberKnife) for brain lesions, medication (for symptom management). For peripheral (non-brain) lesions, the main option is endovascular embolization. These lesions often extend into many tissues and cannot be easily removed.<\/td>\n<\/tr>\n
Procedure Types<\/td>\nMinimally invasive (endovascular embolization), surgical (microsurgical resection), radiosurgery (stereotactic radiosurgery)<\/td>\n<\/tr>\n
Procedure Duration<\/td>\nVaries depending on the treatment method; surgery typically lasts a few hours, while embolization and radiosurgery may be quicker. Endovascular treatment typically leads to a cure in brain lesions, while repeated treatments may be required for those located in the body.<\/td>\n<\/tr>\n
Anesthesia Type<\/td>\nTypically general anesthesia, or deep sedoanalgesia<\/td>\n<\/tr>\n
Preparation<\/td>\nDetailed neurological evaluation, blood tests, imaging tests, preoperative evaluation<\/td>\n<\/tr>\n
Side Effects and Risks<\/td>\nInfection, bleeding, neurological deficits, anesthesia complications, ischemic complications post-embolization, skin wounds<\/td>\n<\/tr>\n
Recovery Time<\/td>\nSeveral weeks to several months post-surgery; faster recovery after endovascular and radiosurgery<\/td>\n<\/tr>\n
Follow-up<\/td>\nRegular neurological examinations, follow-up imaging, monitoring for potential complications post-treatment<\/td>\n<\/tr>\n
Advantages<\/td>\nVarious treatment options, availability of minimally invasive methods, reduction of symptoms and bleeding risk with treatment<\/td>\n<\/tr>\n
Alternative Treatments<\/td>\nSymptomatic treatment (antiepileptic drugs), conservative monitoring (regular imaging and clinical follow-up)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\t
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\n\t\t\t\"Interventional\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n