DAVM

Intraosseous dural arteriovenous malformation (DAVM) is rare. The intraosseous component of this DAVM has usually been neglected on conventional angiography and found during operation after the bone drilling has been completed. Considerable bleeding usually occurs during operation because of the unexpected hypervascular bone marrow. We report the use of MRI to help in the diagnosis and therapeutic plan for this rare type of DAVM.

AIMS: Orbital arteriovenous malformations (OAVM) are rare, mostly described with high flow characteristics. Two cases are reported with an OAVM of distinct haemodynamic abnormality. The clinical, angiographic features, and the management considerations are discussed. METHODS: Case review of two patients with dural AVM (DAVM) who presented to referral neuro-ophthalmology and endovascular services because of clinical symptoms and signs consistent with a cavernous sinus dural AVM...

A 27-year-old male presented with a rare association of a ruptured orbitofrontal artery aneurysm and a dural arteriovenous malformation (DAVM) fed by both ethmoidal arteries, manifestation as severe headache, nausea, and vomiting. Computed tomography revealed a hematoma within the right frontal lobe and diffuse subarachnoid hemorrhage. The aneurysm was clipped successfully and the hematoma was evacuated. After an uneventful postoperative course, the patient was referred for gamma knife radiosurgery to treat the DAVM...

OBJECTIVE: To determine the cause of the visual dysfunction and effect of treatment on dural arteriovenous malformations (DAVMs) that secondarily involve the occipital lobe. BACKGROUND: DAVMs are an infrequent cause of visual dysfunction that should be amenable to treatment if diagnosed before permanent visual field loss. METHODS: The records of seven patients with cerebral visual disturbances associated with DAVMs were analyzed with attention to visual symptoms, visual field testing, and vascular anatomy...

Cerebral vascular malformations are relatively rare diseases, however, their clinical impact is high. The group of vascular malformations include arterio-venous malformations of the brain and of the dura mater (AVM and DAVM) and arterial aneurysms. The danger coming from these malformations lies in the ruture with following cerebral stroke. Patients may die directly, or suffer from numerous deficits as hemipegia, loss of vision or speech and several severe cognitive deficits. Early diagnosis and early treatment is most important to avoid such complications and to prevent the patients from permanent invalidisation...

OBJECTIVE AND IMPORTANCE: Debate continues regarding the pathogenesis of dural arteriovenous malformations (dAVMs). The prevailing theory is that dAVMs are acquired lesions that occur after thrombosis of the dural venous sinus. CLINICAL PRESENTATION: We report unique cases of two patients having different tumors (one meningioma and one glomus jugulare paraganglioma) that occluded the ipsilateral transverse and sigmoid sinuses, respectively, and were associated with dAVMs...

We report three patients with dural arteriovenous malformation (DAVM) in the posterior fossa presenting the venous ischemia and the pathophysiology and the clinical characteristics of DAVM presenting the venous ischemia are discussed. Associated with occlusive changes in the venous sinuses, DAVM in the posterior fossa develops the venous hypertension of the straight sinus and the venous ischemia of cerebral white matter and basal ganglia. The venous ischemia presents progressive symptoms consisting of dementia with or without the ensuing consciousness disturbance...

OBJECTIVE: The treatment of intracranial dural arteriovenous malformations (DAVMs) remains problematic. Options include ligature of feeding vessels, endovascular procedures, surgical obliteration, or a combination of the latter two. We conducted a meta-analysis of the English language literature on DAVMs to determine the most effective treatment option related to location and angiographic characteristics. METHODS: The criteria for inclusion were pre- and post-treatment angiography, a description of the type of treatment, and clinical outcome...

We report a 60-year-old man who had a progressive neurologic deficit resulting from a Djindjian type 4 tentorial dural arteriovenous malformation (DAVM). The DAVM was repaired via percutaneous transvenous coil embolization.

Two cases of dural arteriovenous malformation (DAVM) of the posterior fossa were presented and a histopathological examination was described. After embolization of the feeding arteries, DAVMs of the posterior fossa were removed with the adjacent sinus. Serial sections of the surgical specimens showed an abnormal mass with dilated, tortuous vessels of varying diameters in the sinus wall, and partially hyalinized connective tissue around the vessels. The elastic lamina of the sinus wall was interrupted and a mass of abnormal vessels developed into the subintimal layer of the sinus...

Although radiotherapy has been used to treat non-neoplastic vascular diseases, it is not widely accepted as a standardized treatment for dural arteriovenous malformations (DAVM). The uncertainties regarding the therapeutic outcome and the benign nature of DAVM are the major factors that limit the indication of radiotherapy. In an attempt to assess the long-term benefits and risks of the treatment, we analyzed 24 patients with DAVM treated with radiotherapy. The cavernous sinuses were involved in 12 and the transversesigmoid sinuses in 12...

An 80-year-old man presented with a dural arteriovenous malformation (DAVM) involving the left lateral sinus. A carotid angiogram showed the lateral sinus to be occluded proximally and distally, with unusual retrograde venous outflow from the residual sinus to the cortical veins, including a dilated vein of Labbé. Single photon emission computed tomography showed reduced left frontal and temporal cerebral blood flow. We concluded that the risk of bleeding from the DAVM was high and that the patient needed to be treated immediately...

An intracranial dural arteriovenous malformation (DAVM) is presented, which received some of its blood supply from the left thyrocervical trunk. Since arterial supply from the thyrocervical trunk is not revealed by routine four vessel cerebral angiography, opacification of the ipsilateral thyrocervical trunk is advocated in patients with posterior fossa DAVMs for whom endovascular treatment is being considered.

Nine men with dural arteriovenous malformations (DAVM) at the base of the anterior cranial fossa are described. Four patients had intracerebral haemorrhage and four had seizures, associated with haemorrhage in two. In three cases the fistula was an incidental finding. In five cases the diagnosis could be made before angiography, on the basis of CT findings. Angiographically, venous drainage was always seen into ascending cortical veins. Five cases demonstrated drainage via the olfactory vein into the basal vein of Rosenthal; in four this way was the principal route of drainage...

A case of dural arteriovenous malformation (DAVM) on the convexity adjacent to the superior sagittal sinus (SSS) was reported. A 55-year-old female was admitted to our hospital complaining of severe headache and intracranial bruit. CT scan revealed an osteolytic lesion at the right frontal bone adjacent to the SSS, and MRI showed a flow void area at the same site. Cerebral angiography detected DAVM which was fed by bilateral superficial temporal arteries and plenty of meningeal branches of the middle meningeal artery...

We report a case of dural arteriovenous malformation (dAVM) in the anterior cranial fossa presenting with intracranial hemorrhage. The patient was a 60-year-old man who became unconscious shortly after developing an acute headache. Computed tomography performed on admission demonstrated a left frontal intracranial hematoma together with subarachnoid hemorrhage and a subdural hematoma. Cerebral angiography revealed a dAVM in the left anterior cranial fossa supplied by the anterior ethmoidal arteries bilaterally from enlarged ophthalmic arteries and which drained into the superior sagittal sinus via a dilated cortical vein with aneurysmal dilatation...

Two cases of dural arteriovenous malformation (DAVM) fed by the anterior ethmoidal artery in the anterior cranial fossa are reported, one of them examined by magnet resonance imaging (MRI). Only one other case with MRI findings so far has been published. Fourty-eight previously reported cases are reviewed. One of our patients presented with subdural haematoma (SDH) without subarachnoid or intracerebral haemorrhage. The other patient had a nasal bleed without any neurological manifestations. In comparison with previously reported cases, the clinical manifestation of our cases is infrequent (1 patient with nasal bleed, and 2 patients with pure SDH that is 2 and 4%, respectively, in the literature)...

Dural arteriovenous malformations (dAVMs) are uncommon lesions that constitute about 12% of all the arteriovenous malformations. Depending on the location and the hemodynamics of the lesion, bruit, focal neurological deficit, and visual symptoms represent the more common presentation modalities. Although uncommon, intracranial hemorrhage can occur. In the present study, we report six patients with dural arteriovenous malformation that presented with intracranial hemorrhage. In five cases the hemorrhage was intraparenchymal (localized to the parietooccipital area in three), while it was confined to the subarachnoid space in the remaining one...

During two periods (1.1.1981-3.1.1985 and 1.1.1988-31.12.1992) 57 patients were treated or attempted treated with endovascular embolization. The patients suffered either from arteriovenous malformations (AVM), dural arteriovenous malformations (DAVM), carotico-cavernous fistulas (CCF), giant aneurysms or meningenomas. During the first period the balloon-technique was mainly employed and only one isobutyl-2-cyanoacrylate (IBCA) embolization was carried out. Six AVMs and 11 CCFs were treated, and the complication rate was 33%...

The authors report a case of dural arteriovenous malformation (dAVM) in the anterior fossa that was associated with an occlusion of the unilateral middle cerebral artery with Moyamoya phenomenon. The patient was a 79-year-old man referred to our department with an episode of consciousness disturbance and headache. Computed tomography scan showed intracerebral hematoma in the left frontal lobe, combined with left frontal subdural hematoma and subarachnoid hemorrhage. Angiography revealed dAVM in the left anterior fossa, fed by the bilateral ethmoidal and the bilateral middle meningeal arteries, and draining into the superior and inferior sinuses through the pial veins with vascular sacs...