Swelling. Usually swelling of the involved limb due to venous engorgement. Can also have limb deformity and length descrepency. Varicose veins can also be present. Best diagnostic test is MRI of effected area.
Pulsation, pressure. Some of these are quite localized and may be approachable with a limited surgery. Please reach out to me directly if I can answer a more specific question about your condition.
AVM Symptoms. Typically, yes. Those symptoms are flank or back pain and bloody urine. A common physical finding is high blood pressure. The caveat here is that these symptoms can also be seen in a wide variety of other renal conditions. Thus, if you are concerned that you may have an avm, please see your doctor for a more thorough evaluation.
Renal AVM. Renal arteriovenous malformations (avms) and fistulas include various abnormal connections between the intrarenal arterial and venous systems. They cause hematuria (blood in the urine, which may not be visible to the naked eye) and are associated with hypertension. Gross (visible) hematuria is the initial symptom in about 75% of patients. Also can get kidney pain due to blood clots.
Location. Just like in real estate, it depends on location of the lesion. Also the volume of blood shunting through it.
Form of Angiography. Arteriovenous malformations (avm) can be detected by numerous forms of angiography. The simplest involves ct scanning and requires the use of dye. Mr angiography provides multiple views of the avm within the brain, providing the surgeon a three d view. With conventional angiography a physician inserts a catheter and "shoots" dye to demonstrate the feeding / draining vessels. (dis)advantages each.
Where? Arteriovenous malformations are also common in the digestive tract especially in patients with chronic renal failure (found during endoscopies). They also may be present in the lungs. Vascular surgeons may produce artificial av fistulas for the purpose of hemodialysis. Theoretically angiography by ct or mra should find them.
Depends on Location. In the brain it can include, ct, MRI, and ct angiogram or mr angiogram.
CT, MRI, Angiogram. An arteriovenous malformation (avm) of the brain is an abnormal connection between the arteries and the veins that leads to a "tangle of blood vessels". These can be found on a ct scan with contrast. Another way to detect these is with an MRI or mra of the brain. The best and final test is a cerebral angiogram. This is a test in which contrast dye is injected into the actual blood vessels.
Angiography. Noninvasive imaging studies (CTA, MRA, etc) are excellent for the screening and overall evaluation of arteriovenous malformations. Catheter angiography remains necessary for fine analysis and treatment planning, in particular for anomalies involving the brain and spinal cord. Catheter angiography also plays an important role in the treatment of vascular malformations (endovascular therapy).
Avm. MRI probably most accurate.
Treatment. Depending on the size and location, treatment cold be from nothing to resection, emboli satin, gamma knife radiation.
Maybe no problem. Arteriovenous malformation of brain or spinal cord is a genetic malformation which may be small and inconsequential, but if it ruptures and bleeds could cause local damage, especially in spinal cord. Brain issues can include local stroke, seizures, and local brain compression plus the bleeding. Surgery, catheterization to close the lesion, and proton beam irradiation may all help. Size critical.
Size matters. Avms can bleed or cause strokes, either of which can cause a huge range of problems depending on location and size. Some avms are so large that they press on nearby brain tissue like a tumor would. Much of the health consequences depend in the size of the avms.
Location. Avms may be located in the brain (as 1st answer noted) or in the "gut" (gastrointestinal tract). The location, size, and severity help determine the consequences.
Dural avm. Unlike other brain AVMs which are congenital, dural AVMs are believed to be acquired. Dural AVMs are not infectious or inherited. Occasionally, a dural AVM has been reported following cranial surgery. The reasons for the development of dural AVMs are unknown. They may result from a blood clot in a large venous channel which then forms a connection between a dural artery and vein during the repair.
More information. Arterio-venous malformations at the basic level is an abnormal connection to an artery and vein. They can occur anywhere in the body and can be something you are born with (congenital) or acquired, usually through penetrating trauma. They can cause problems with bleeding or shunting of blood or allowing bacteria or clots to pass through them. The symptoms relate to where they are located.
Vascular Abnormality. A pulmonary arteriovenous malformations (pavm) is a rare vascular abnormality of the lung. Most cases tend to be simple avm's (single feeding artery) although up to 20% of cases can have complex (2 or more) feeding vessels. They can be multiple in about 1/3 of cases.
Nidus of vessels. Abnormal communication between a pulmonary artery and vein with no normal capillary bed in between them.