-2 :: Case - 13430 :: - Arteriovenous malformation, hematoma, left parietal lobe
Medical Image Database, Atlas, and Teaching File
All Cases are Peer Reviewed by an Editoral Panel

Tx and Followup:
The patient was admitted on 12/14/09 and was brought to the OR on 12/14/09 for left parietal craniotomy for clot evacuation and arteriovenous malformation resection. Pt was discharged three days post-op with appointments for PT and speech therapy

Additional Discussion:
The yearly risk of hemorrhage associated with AVMs is 2-3%, with a mortality rate of 10% for the initial bleed and increasing up to 20% for subsequent bleeds. Neurological deficits occur approximately 50% of the time with each bleed, mainly due to mass effect. Patients with AVMs are at increased risk for cerebral aneurysms, specifically located on the arteries feeding the AVM. Treatment options include endovascular techniques as well as surgical resection. Endovascular treatment options are often used as surgical adjuncts. Embolization can be used pre-operatively to shrink the AVM, reduce intra-operative bleeding, and decrease surgical time. Embolization is also important in patients with either small AVMs, arterial feeders, or AVMs with rebleeding after surgery. The rebleeding rate of a ruptured AVM is 6% for the first year, and 2-4% each year thereafter, but there can be an “angiographic cure” with embolization of any remnant arterial feeders. Treatment itself is not completely benign, with one study indicating that the overall rate of new neurological deficits after surgical resection was 32% in patients with unruptured AVMs. Arteriovenous malformations are graded based on the Spetzler-Martin grading system, which predicts surgical resectability based on size of AVM, pattern of venous drainage, and eloquence of adjacent brain. High grade AVMs are more difficult to resect, and, therefore, may result in neurological deficits due to the surgery itself.

Discussion Author: Heather Bennett

The yearly risk of hemorrhage associated with AVMs is 2-3%, with a mortality rate of 10% for the initial bleed and increasing up to 20% for subsequent bleeds. Neurological deficits occur approximately 50% of the time with each bleed, mainly due to mass effect. Patients with AVMs are at increased risk for cerebral aneurysms, specifically located on the arteries feeding the AVM. Treatment options include endovascular techniques as well as surgical resection. Endovascular treatment options are often used as surgical adjuncts. Embolization can be used pre-operatively to shrink the AVM, reduce intra-operative bleeding, and decrease surgical time. Embolization is also important in patients with either small AVMs, arterial feeders, or AVMs with rebleeding after surgery. The rebleeding rate of a ruptured AVM is 6% for the first year, and 2-4% each year thereafter, but there can be an “angiographic cure” with embolization of any remnant arterial feeders. Treatment itself is not completely benign, with one study indicating that the overall rate of new neurological deficits after surgical resection was 32% in patients with unruptured AVMs. Arteriovenous malformations are graded based on the Spetzler-Martin grading system, which predicts surgical resectability based on size of AVM, pattern of venous drainage, and eloquence of adjacent brain. High grade AVMs are more difficult to resect, and, therefore, may result in neurological deficits due to the surgery itself.

Topic Details: Pediatric Arteriovenous Malformation :: :: Search for other Topics with Pediatric Arteriovenous Malformation

Highlight this =>[ Pediatric Arteriovenous Malformation ]<= for a Popup Search Tool