Intraorbital Arteriovenous Fistula Research Articles

Clinical case of multiple metachronous intraorbital arteriovenous fistulas in a patient with congenital heart disease

Intraorbital arteriovenous fistulas are rare arteriovenous shunts inside the orbit without connection with the cavernous sinus. This article describes a clinical case of multiple metachronous intraorbital arteriovenous shunts in a patient with univentricular heart disease and secondary erythrocytosis. Transarterial embolization of the first shunt had a positive clinical effect for 2 months. The recurrence of symptoms was caused by the formation of a new shunt on the same draining vein, but in a place remote from the previous locus. Repeated embolization gave a positive effect for the same period. The next relapse had a more malignant course, up to dislocation of the eyeball. The right orbit decompression has given a stable positive clinical effect up to the present moment. Based on extremely limited literature data of such cases and our own experience, we concluded that an individual and multidisciplinary approach to such patients with careful postoperative follow-up is necessary.

Intraorbital Arteriovenous Fistulas: Case Series and Systematic Review.

Intraorbital arteriovenous fistulas (AVFs) are an extremely rare subtype of intracranial fistula with ophthalmic symptoms similar to cavernous sinus dural AVFs or carotid cavernous fistulas but worse visual outcomes. Here, we present a case series and thorough systematic review on intraorbital AVFs to demonstrate treatment modalities and address this rare type of AVF. We conducted a retrospective study at a single center, in which we identified all cases of intraorbital AVFs that occurred between 2002 and 2022. We collected and analyzed data on demographics, fistula characteristics, treatment methods, clinical outcomes, and fistula closure. In addition, we conducted a systematic review of intraorbital AVFs. Seven cases in our center and 41 cases of intraorbital AVFs reported in the 35 articles were identified. At our center, transarterial embolization (TAE) (42.9%) alone resulted in immediate complete occlusion in 3 cases. Transvenous embolization (14.3%) resulted in one case of immediate complete occlusion. In 2 cases, surgery (28.6%) resulted in immediate complete occlusion. In one case, conservative treatment (14.3%) was used, and the fistula was eventually spontaneously occluded. Immediate complete occlusion rate was 85.7%. One blindness occurred (14.3%). In the literature reported, 3 cases (60%) of retinal artery occlusion were reported when performing TAE via the ophthalmic artery. Two fistulas recurred as reported. In 33 (80.5%) patients, the fistula was finally completely occluded. TAE via the ophthalmic artery carries a high risk of blindness and a low cure rate. Transvenous techniques such as conventional transvenous routes, surgical exposure, or direct puncture of the drainage vein have been used as the first line of treatment for intraorbital AVFs.

Management of intraorbital metallic foreign body with lateral orbitotomy and c-arm guiding surgery: a challenging case

Introduction: Orbital trauma is an emergency condition that often occurs with increasing mobility and industry. An intraorbital foreign body is one of the traumas that occur in the orbit. An intraorbital foreign body is an entrapment of corpus alienum in the orbital cavity, either accompanied by orbital fracture or not accompanied by fracture. Case Report: We report a 31-year-old man who suffered ocular trauma and had a rusty hammer splinter foreign body stuck in the orbital cavity of the right intraconal region. The patient was found with an initial suspicion of IOFB, but investigations with a head CT scan could not detect the presence of IOFB. The treatment of choice for this patient is a lateral orbitotomy with C-arm fluoroscopy guiding. Panuveitis occurred in the patient's eye after the extraction of the corpus alienum was performed. Suspicion of inflammation caused by siderosis bulbi cannot been ruled out. Discussion: Suspicion of the presence of an intraorbital foreign body can be based on several clinical symptoms and patient complaints and the presence of port d' entry through the cornea, sclera, or eye adnexa. Management of intraorbital foreign body depends on the type of foreign body, its location in the orbit and the presence or absence of accompanying complications. Lateral orbitotomy with c-arm guiding in this patient successfully extracted an intraconal foreign body using the S-Stallar Wright incision technique. Avoid ocular complications due to intraorbital foreign body retention include orbital cellulitis, chronic cutaneous fistula, optic neuropathy, extraocular muscle rupture, bulbar perforation, intracranial penetration, intraorbital arteriovenous fistula, and chorioretinal atrophy. Conclusion: The management of intraorbital foreign bodies depends on the type of retained foreign body, whether inert or non-inert/toxic. So that it can prevent patients from threatening intraorbital and intraocular complications.

Transvenous embolization via the facial vein for intraorbital dural arteriovenous fistula: illustrative case.

Intraorbital arteriovenous fistula (IOAVF) is a rare type of intracranial fistula that presents with ocular signs similar to those of cavernous sinus dural arteriovenous fistula. The treatment of IOAVF is based on the vascular architecture of each case due to its infrequent occurrence. The authors report the case of an IOAVF that was successfully treated with embolization via the facial vein, with good outcomes. A 78-year-old woman presented with left eyelid swelling, pulsatile ocular protrusion, and left ocular conjunctival hyperemia. Ophthalmological evaluation revealed elevated intraocular pressure; time-of-flight magnetic resonance angiography revealed a dilated left superior ophthalmic vein. Digital subtraction angiography showed an arteriovenous shunt in the left superior orbital fissure, which was treated using transvenous coil embolization. The patient experienced immediate improvement in left ocular protrusion and conjunctival hyperemia. Ophthalmological evaluation 1 month after treatment showed normal intraocular pressure in the left eye. No neurological symptoms were observed, and there was no recurrence of the arteriovenous shunt 3 months postoperatively. The authors report a rare case of IOAVF treated with embolization via the facial vein with a good outcome. A thorough understanding of the vascular architecture using three-dimensional images is useful for determining endovascular access and procedures.

Focal Serous Retinal Detachment after Intraorbital Arteriovenous Fistulas

A 56-year-old man presented with sudden redness and proptosis of his left eye. Examination demonstrated tortuous and dilated episcleral vessels (Fig A) with near normal best-corrected visual acuity (20/25) and intraocular pressure (21 mmHg). Angiogram confirmed the diagnosis of intraorbital arteriovenous fistulas (Fig B). Two months later, he developed sudden blurring of vision to 20/200. Macular subretinal fluid and dilated choroidal vessels were observed (Fig C, D). We speculate that the hemodynamic abnormality resulted in dysfunction of choriocapillaris and retinal pigment epithelium.

Orbital supratrochlear fistula secondary to anaesthetic block in cataract surgery

A case is described of a woman with history of right peribulbar nerve block prior to cataract surgery that, within a few days, presented with a trochlear intraorbital arteriovenous fistula. This was resolved without sequelae after three months by performing intermittent homolateral carotid massages. This is the first case of supratrochlear intraorbital arteriovenous fistula. There are only 8 cases reported of traumatic intraorbital arteriovenous fistula, and only one was with post-peribulbar anaesthesia.

Fístula orbitaria supratroclear secundaria a la realización de un bloqueo para anestesia en una cirugía de catarata

A case is described of a woman with history of right peribulbar nerve block prior to cataract surgery that, within a few days, presented with a trochlear intraorbital arteriovenous fistula. This was resolved without sequelae after three months by performing intermittent homolateral carotid massages. This is the first case of supratrochlear intraorbital arteriovenous fistula. There are only 8 cases reported of traumatic intraorbital arteriovenous fistula, and only one was with post-peribulbar anaesthesia.

Intraorbital Arteriovenous Fistula From the Superficial Temporal Artery

Intraorbital arteriovenous fistula is a rare vascular disease characterized by an acquired arteriovenous communication without direct cavernous sinus involvement. Intraorbital arteriovenous fistula may develop slowly and present similarly to other insidious orbitopathies, such as carotid-cavernous fistula. The authors present a case of a superficial temporal artery to superior ophthalmic vein fistula arising in the absence of trauma or prior surgery. This is the first report of a spontaneous intraorbital arteriovenous fistula arising between these vessels and further describes the rare occurrence of intraorbital arteriovenous fistula.

Visual disorders caused by cranial arteriovenous fistula with venous drainage into the superior ophthalmic vein.

Although the abnormal venous drainage into the superior ophthalmic vein (SOV) is a well-known entity responsible for ocular symptoms, it remains unclear to what degree it affects the visual function. The purpose of this study was to evaluate the incidence, characteristics and outcomes of the visual disorders in patients with intracranial arteriovenous fistula (AVF) with venous drainage into the SOV. This retrospective study involved eight patients diagnosed with intracranial AVFs with abnormal venous drainage into the SOV between January 2014 and December 2016. The most common location of AVF was the cavernous sinus (CS) in five patients, followed by the intraorbit in two patients and superior sagittal sinus (SSS) in one patient. Visual disorders were detected in three patients (two intraorbit and one CS). The visual field contraction was observed in a patient with intraorbital AVF, and the reduction of visual acuity was confirmed in another patient with intraorbital AVF and a patient with CS dural AVF. All patients underwent an interventional treatment consisting of endovascular embolisation, stereotactic radiosurgery or both, which was selected based on their angioarchitecture. Although angiographic cure of AVF was confirmed in all patients, visual function did not fully recover in two patients with intraorbital AVF. In cases of intraorbital AVF, visual disorders are more frequent and can result in poorer outcomes compared with other dural AVFs with drainage into the SOV. Early diagnosis and treatment are crucial to preserve the visual function of patients with intraorbital AVF.

Noncavernous arteriovenous shunts mimicking carotid cavernous fistulae.

The classic symptoms and signs of carotid cavernous sinus fistula or cavernous sinus dural arteriovenous fistula (AVF) consist of eye redness, exophthalmos, and gaze abnormality. The angiography findings typically consist of arteriovenous shunt at cavernous sinus with ophthalmic venous drainage with or without cortical venous reflux. In rare circumstances, the shunts are localized outside the cavernous sinus, but mimic symptoms and radiography of the cavernous shunt. We would like to present the other locations of the arteriovenous shunt, which mimic the clinical presentation of carotid cavernous fistulae, and analyze venous drainages. We retrospectively examined the records of 350 patients who were given provisional diagnoses of carotid cavernous sinus fistulae or cavernous sinus dural AVF in the division of Interventional Neuroradiology, Ramathibodi Hospital, Bangkok between 2008 and 2014. Any patient with cavernous arteriovenous shunt was excluded. Of those 350 patients, 10 patients (2.85%) were identified as having noncavernous sinus AVF. The angiographic diagnoses consisted of three anterior condylar (hypoglossal) dural AVF, two traumatic middle meningeal AVF, one lesser sphenoid wing dural AVF, one vertebro-vertebral fistula (VVF), one intraorbital AVF, one direct dural artery to cortical vein dural AVF, and one transverse-sigmoid dural AVF. Six cases (60%) were found to have venous efferent obstruction. Arteriovenous shunts mimicking the cavernous AVF are rare, with a prevalence of only 2.85% in this series. The clinical presentation mainly depends on venous outflow. The venous outlet of the arteriovenous shunts is influenced by venous afferent-efferent patterns according to the venous anatomy of the central nervous system and the skull base, as well as by architectural disturbance, specifically, obstruction of the venous outflow.

Intraorbital arteriovenous fistula with thrombosed varix: Diagnosis and treatment without catheter angiography in a developing country

Background:Pure intraorbital arteriovenous fistula (AVF) that do not connect to the cavernous sinus are quite rare. Presence of thrombosed varix in association with a spontaneous onset pure orbital AVF is even rarer.Case Description:We report an interesting case of a 50-year-old female with pure intraorbital AVF of spontaneous onset with thrombosed varicose superior ophthalmic vein (SOV). She presented with 18 months history of right eye proptosis, upper lid swelling, and conjunctival chemosis with recent onset of retro-orbital pain and decreased vision. Computed tomography (CT) and angiography revealed thrombosed varicose SOV in association with pure intraorbital AVF. Direct surgical exposure of the thrombosed SOV through right fronto-orbital approach followed by excision of the fistulous lesion resulted in complete orbital decompression with disappearance of all symptoms by 2 months.Conclusion:Spontaneous onset pure intraorbital AVF in association with thrombosed varicose SOV is extremely rare. In such cases, direct surgical exposure of the SOV followed by excision may accomplish complete closure of the fistula without significant risk for iatrogenic injury.

Transvenous Coil Embolization of an Intraorbital Arteriovenous Fistula

Purely intraorbital arteriovenous fistulas (AVFs), which are rare vascular malformations that clinically mimic carotid-cavernous fistulas (CCFs), involve a fistula from the ophthalmic artery to 1 of the draining ophthalmic veins. We describe a case of an intraorbital AVF treated with transvenous endovascular coil embolization via the inferior petrosal sinus (IPS) route and review the literature on this rare entity. An 81-year-old woman sought treatment after 7 days of progressive left-sided visual acuity loss, chemosis, and lateral rectus palsy. Magnetic resonance imaging demonstrated dilated vascularity in the left orbit raising suspicions for a CCF. Cerebral angiography showed a purely intraorbital AVF with a fistula between the left ophthalmic artery and superior ophthalmic vein (SOV). Transvenous selective catheterization of the fistula was performed by successfully navigating the ipsilateral IPS to the cavernous sinus and SOV. The fistula was then embolized using detachable coils. The patient was discharged the next day. Three weeks after embolization, her ocular symptoms and findings had resolved. Intraorbital AVFs are a rare type of AVF that can be treated by direct surgical ligation, transarterial embolization, or transvenous embolization. We successfully navigated the IPS, which is frequently stenotic or occluded secondary to chronically increased fistulous drainage, and utilized this route to embolize the fistula with detachable coils.

Diagnosis and Management of an Intraorbital Vascular Fistula

A spontaneous intraorbital arteriovenous fistula is an extremely rare phenomenon. More commonly, arteriovenous fistulas occur spontaneously as carotid cavernous fistulas and dural cavernous fistulas or are secondary to trauma. Surgical approaches vary widely and each carries their own set of potential problems. The purpose of this single case report was to provide an example of a successful treatment of a rare, spontaneous intraorbital vascular fistula.

Transvenous embolization of an intraorbital arteriovenous fistula using Onyx

We report a 61-year-old male with an intraorbital arteriovenous fistula. Due to the close proximity of the arterial feeder to the central retinal artery, and the tiny calibre of the draining branches of the superior ophthalmic vein, transvenous embolization of the fistula by Onyx was preferred. The procedure completely obliterated the shunt and the patient had complete relief of symptoms within 6 months.

Spontaneous Resolution of Intraorbital Arteriovenous Fistulas

Spontaneous intraorbital arteriovenous fistulas are extremely rare. A 50-year-old man presented with progressive right blurred vision for 1 year and right proptosis for 2 months. He had no trauma history or family history of vascular disorders. Orbital MRI showed increased vascularity in the right orbital apex and bilateral dilated superior ophthalmic veins. Digital subtraction angiography of the carotid circulation demonstrated several small fistulas between the right ophthalmic artery and the right superior and inferior ophthalmic vein. He did not receive any intervention treatment for the intraorbital arteriovenous fistulas because of technical difficulty and high risk. His vision and symptoms gradually improved over a follow-up interval of 6 months. Patients with intraorbital arteriovenous fistulas without significant loss of visual function could be observed for spontaneous resolution.

Intraorbital Arteriovenous Fistula Secondary to Penetrating Injury.

To describe the clinical and radiologic features and management of an intraorbital arteriovenous fistula secondary to penetrating injury. Interventional case report and literature review. We describe a 13-year-old girl with a history of penetrating orbital injury who presented with proptosis, eyelid hyperemia, and orbital venous congestion. Computed tomography showed a large foreign body in the superiormedial orbit and an enlarged superior ophthalmic vein (SOV). Doppler ultrasonography revealed arterialized flow in the SOV. Removal of the foreign body did not alter the orbital symptoms. Carotid angiography disclosed a fistula between the ophthalmic artery and the SOV. The patient underwent an attempted coil embolization of the fistula through the femoral vein, which was unsuccessful, but she developed profound thrombosis of the SOV, which propagated through the orbital venous system. Although orbital venous congestive symptoms were acutely exacerbated, they regressed spontaneously within 1 month. The patient was followed for 23 months without recurrence. Penetrating injury of the orbital apex may lead to the formation of an arteriovenous fistula, transvenous embolization of which may be complicated by thrombosis of the SOV. In our case, this unintentional result facilitated the resolution of the fistula.

Embolization of Orbital Arteriovenous Fistulas

Purely intraorbital arteriovenous fistulas (AVFs) are rare, and their clinical management is controversial. The authors successfully treated a patient with an intraorbital AVF by transvenous embolization alone. An accurate distinction between an arteriovenous malformation (AVM), which is characterized by the existence of a nidus, and an AVF, which has no nidus, is important and requires superselective ophthalmic artery angiography. Treatment of an intraorbital AVF by transvenous embolization can improve visual function.

Intraorbital Arteriovenous Fistulae Of The Ophthalmic Veins Treated By Transvenous Endovascular Occlusion:Technical Case Report

Intraorbital arteriovenous fistulas (AVF) of the ophthalmic veins are an extremely rare phenomenon. This article describes two such cases treated solely by transvenous occlusion and not hitherto described in the literature. Two women, aged 51 and 63 years old, presented with proptosis and chemosis mimicking a carotid-cavernous fistula. In both cases, cerebral angiography revealed an intraorbital dural AVF of the superior and inferior ophthalmic vein, respectively. Both patients underwent transvenous ablation of the dural AVF retrograde via the facial vein and subsequently had complete resolution of the presenting symptoms. Ophthalmic vein fistulas are a rare form of AVF with presenting symptoms mimicking those of carotid cavernous fistulae. This report describes two cases of ophthalmic vein fistulas successfully treated and angiographically obliterated via transvenous embolization with resolution of the patient's presenting symptoms.

Transvenous embolization for a purely intraorbital arteriovenous fistula

Purely intraorbital arteriovenous fistulas (AVFs) are rare, and their clinical management is controversial. The authors successfully treated a patient with an intraorbital AVF by transvenous embolization alone. An accurate distinction between an arteriovenous malformation (AVM), which is characterized by the existence of a nidus, and an AVF, which has no nidus, is important and requires superselective ophthalmic artery angiography. Treatment of an intraorbital AVF by transvenous embolization can improve visual function.

Traumatic orbital arteriovenous fistula

Acute left-sided visual loss, chemosis and proptosis with ophthalmoplegia developed in a 63-year-old man following head trauma. Neuroradiologic studies demonstrated an intraorbital arteriovenous fistula. Ligation of the intracranial ophthalmic artery reduced the degree of proptosis, chemosis and ophthalmoplegia, but the eye remained blind. Intraorbital arteriovenous fistulas are rare and cause symptoms similar to those that occur in cases of carotid-cavernous fistulas. Treatment may be necessary to retard ocular damage, because spontaneous remission has not been reported.