Direct percutaneous transorbital puncture under fluoroscopic guidance with a 3D skull reconstruction overlay for embolisation of intraorbital and cavernous sinus dural arteriovenous fistulas

Transorbital puncture for the treatment of cavernous sinus dural arteriovenous fistulas

BACKGROUND

Endovascular embolization of carotid-cavernous sinus dural arteriovenous fistulas (CCFs) is most commonly performed via a transfemoral-transvenous approach. Surgical cut-down of the superior ophthalmic vein is an alternative, well-described route. When these prove inaccessible, a transorbital approach can be used to reach the fistula.

METHODS

We describe the recent experience- including indications, surgical technique, radiological findings and post-operative outcomes- in Melbourne of a series of patients in whom a percutaneous, transorbital direct puncture of the cavernous sinus enabled successful embolization of dural arteriovenous fistulas.

RESULTS

Each of three patients achieved successful embolization of their CCFs via a transorbital puncture. Post-operatively, all patients experienced symptomatic relief with complete resolution of clinical signs secondary to their CCFs.

CONCLUSION

When angioarchitecture does not allow endovascular access, transorbital puncture of carotid-cavernous sinus dural arteriovenous fistulas can be a safe and effective technique. This report supports its success and low complication rate.

Clinical features, treatment, and outcomes of cavernous sinus dural arteriovenous fistulas: a cohort study of 141 patients

PURPOSE

The cavernous sinus (CS) region is a common region of dural arteriovenous fistula (DAVF). Over time, treatment strategies are gradually changing. In this study, we present our center's experience in managing CS-DAVF over the past 20 years.

METHODS

Medical records of patients diagnosed with CS-DAVF between 2002 and 2021 were collected for analysis. Patients meeting the predefined inclusion and exclusion criteria were included. This study summarized and analyzed their clinical characteristics, CS-DAVF angioarchitecture, treatment strategies, and outcomes.

RESULTS

A total of 141 patients (mean age 55 years, 46 males) were included in this study. Ocular/orbital symptoms were the most frequently reported initial symptoms, with 84 (59.6%) patients experiencing these symptoms first. Presentation with ocular/orbital symptoms as the first symptom was associated with thrombosis of the inferior petrosal sinus (p = 0.032). Presentation with headache/dizziness and tinnitus/intracranial murmur as the first symptom was associated with sphenoparietal sinus/superficial middle cerebral vein drainage (p = 0.011). Among the patients, 131 (92.9%) patients received endovascular treatment, with 114 (87.0%) undergoing transvenous embolization. Onyx (92.4%) and coil (74.8%) were the most used embolic materials. 17 (13.0%) of the patients who received endovascular treatment suffered intraoperative or postoperative complications, and 11 (64.7%) patients fully recovered within 6 months after discharge.

CONCLUSION

Ocular/orbital symptoms were the most common first symptom of CS-DAVF. The mode of venous drainage played a significant role in determining the first symptoms. Transvenous embolization using Onyx or a combination of Onyx and coils was the primary treatment modality.

Intraorbital Arteriovenous Fistulas: Case Series and Systematic Review

BACKGROUND AND OBJECTIVES

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.

METHODS

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.

RESULTS

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.

CONCLUSION

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.

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

BACKGROUND

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.

OBSERVATIONS

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.

LESSONS

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.

Orbital Arteriovenous Fistula Causing Only Visual Impairment due to Compression of the Optic Nerve by the Dilated Superior Ophthalmic Vein

Orbital arteriovenous fistula (AVF) is a rare disease, and its standard therapeutic strategy has not been established. A 70-year-old male consulted an ophthalmologist due to a visual field defect in his left eye. Neurological findings showed visual impairment but no symptoms such as exophthalmos, conjunctival congestion, or diplopia. Magnetic resonance imaging showed marked dilation of the left superior ophthalmic vein (SOV). Cerebral angiography revealed an AVF that was limited to the left orbit. The feeder was a branch of the ophthalmic artery that originated from the first portion, and the drainer was the SOV, which was meandering and significantly dilated. Since the only symptom was visual impairment, the etiology was considered to be compression of the optic nerve due to a dilated SOV rather than increased venous pressure. Transvenous embolization via the facial vein was performed, and a visual field examination 1 week after the operation revealed marked improvement. Orbital AVF that develops only with visual impairment is extremely rare. As demonstrated with this case, coil embolization for proper position and reduction of the venous pressure, which relieves compression on the optic nerve, may be useful in improving the visual impairment.

Orbital Venous Malformation Excision after Transcaruncular Embolization with Onyx

Orbital venous malformations are low-flow lesions resulting from vascular dysgenesis during development. Patients may present with vision loss, proptosis accentuated by Valsalva, and/or painful spontaneous thrombosis. The preferred treatment for symptomatic lesions is embolization combined with excision. A 34-year-old male presented to our institution from an outside emergency department with a diagnosis of presumed idiopathic orbital inflammation. For the prior month, he had been experiencing left orbital pressure, subjective eye bulging, and both diplopia and blurry vision when in peripheral gaze or when bending over. Despite initial improvement with steroids, his symptoms recurred with tapering. Visual acuity was reduced to 20/25, but pupils and motility remained normal. Biopsy demonstrated a vascular lesion characterized by fibroadipose tissue with histologically unremarkable blood vessels, and cerebral arteriography showed no high-flow components. A diagnosis of orbital venous malformation was made. He then underwent intraoperative angiography and Onyx embolization followed by excision via a transcaruncular approach. Two prior reports have described the use of Onyx in venolymphatic malformations. This report highlights a detailed approach to defining flow characteristics pre- and intraoperatively and expands upon our understanding of the use of Onyx for such cases.

UPDATE ON MANAGEMENT OF DURAL ARTERIOVENOUS FISTULAS

Dural Arteriovenous Fistulas (AVF) represent about 10% of all intracranial vascular lesions. Although they seem benign in nature, the presence of retrograde venous makes them aggressive, with a high risk of complications. Patients may be clinically asymptomatic or experience symptoms ranging from mild to severe hemorrhage, depending on their location. Different treatments are available, but recently, the development of catheter intervention allows most patients to be cured with transcatheter embolization. Stereotactic radiosurgery achieves excellent rates of obliteration for low-grade lesions. In this review, we try to highlight the recent advances in the management of dural AVF.

Embolization of Cavernous Sinus Dural Arteriovenous Fistula (CSDAVF) via transvenous approaches: Practice, experience summary and literature review

OBJECTIVE

To evaluate the safety and efficacy of embolization via transvenous approaches in patients diagnosed with Cavernous Sinus Dural Arteriovenous Fistula (CSDAVF). We also hope to further summarize our preliminary experiences with transvenous approaches.

MATERIAL AND METHODS

We retrospectively collected data from patients who were diagnosed with CSDAVF and were treated with embolization via transvenous approaches from June 2014 to November 2020 at Beijing Tiantan Hospital. We evaluated the safety and efficacy of this treatment using radiological results and clinical follow-up.

RESULTS

A total of 83 patients were included in this study. Complete occlusion was obtained in 76 (89.4%) patients. Sub-total occlusion was obtained in eight (9.4%) patients. Partial occlusion was obtained in one (1.2%) patient. There was no recurrence. Seventy-six patients (91.5%) were cured, and seven patients showed symptom improvement (8.5%). There were no cases of worsening symptoms following embolization, and only ten (12.0%) cases had mild complications.

CONCLUSION

There was a high occlusion rate and a low complication rate in our study. Thus, completing embolization of CSDAVF via transvenous approaches may be safe and effective. However, this operation is more difficult than those via transarterial approaches. Transvenous embolization should therefore be performed in an experienced medical center.

Dural Arteriovenous Fistulas in the Parasellar Region Other Than the Cavernous Sinus

Besides cavernous sinus (CS) dural arteriovenous fistulas (AVFs), AVF may develop around the parasellar region. They can cause various symptoms, and some of them may show similar symptoms to those of CS dural AVF. Therefore, these AVFs may be misdiagnosed as CS dural AVFs. In this review, we divided parasellar AVFs into four groups based on their locations related to the CS: anterior group (orbit), anterolateral group (sphenoid wing), posteroinferior group (inferior petrosal sinus and clivus), and posterior group (superior petrosal sinus and petrosal vein). Although parasellar AVFs share common points, there are many differences between the four groups. We herein discuss commonalities and differences in parasellar AVFs based on a review of the literature and our experience.

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

BACKGROUND

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.

METHODS

This retrospective study involved eight patients diagnosed with intracranial AVFs with abnormal venous drainage into the SOV between January 2014 and December 2016.

RESULTS

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.

CONCLUSIONS

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.

Endovascular treatment evolution for pure intraorbital arteriovenous fistula: Three case reports and literature review

Background and importance Intraorbital arteriovenous fistulas (IOAVFs) are rare and cause eye redness, exophthalmos, blurry vision and bruit. Whereas in the past they were treated conservatively, surgically or transarterially, recent developments in transvenous embolization have improved their treatment. In this paper the authors report three cases of IOAVFs treated endovascularly and review the evolution of treatment options. Methods Three cases of purely IOAVF enrolled in our center were reported and a PubMed literature search was performed using "pure intraorbital arteriovenous fistula" and "arteriovenous fistula of the optic nerve sheath." A total of 21 papers were reviewed in full, focusing primarily on the treatment and outcomes. Results A total of 26 patients were obtained, including our three patients and 23 patients reported in the literature. In nine patients treated conservatively, four spontaneous occlusions, one visual deterioration and four cases with unknown outcome were reported. In another 18 patients, 29 therapies (including five surgical treatment, 11 transarterial embolizations and 13 transvenous embolizations) were attempted and resulted in 12 cures, five visual deteriorations and one without reported outcome. More recently, transvenous embolization has become the mainstay of IOAVF treatment. Of the 21 patients assessed between 2000 and 2013, a transvenous approach was attempted in 13 patients; nine patients were cured without any adverse events. Conclusion Development and improvement of transvenous techniques are found to be safe and effective for patients with IOAVF.

Transorbital Cavernous Sinus Direct Puncture : Alternative to treat dural arteriovenous fistula

INTRODUCTION

The authors present a retrospective series of their clinical experience in the treatment of cavernous dural arteriovenous fistulas (DAVF) by direct transorbital puncture of the cavernous sinus as an alternative to the endovascular approach.

METHODS

Between October 2012 and September 2014, eight patients harboring cavernous DAVF underwent percutaneous treatment by direct transorbital puncture of the cavernous sinus at three institutions. All patients presented with ocular symptoms. Standard endovascular approaches, including transvenous and transarterial routes, were primarily attempted without success in all cases. Direct puncture was performed through two different approaches, namely inferolateral and superomedial. The entry point was the inferior and superior eyelid, respectively. Embolization was performed with coils or Onyx (Covidien, Irvine, CA). Immediate and late angiographies were used to evaluate the occlusion of the fistula.

RESULTS

Of the patients seven had complete occlusion of the cavernous DAVFs noted on the immediate and follow-up angiograms and one patient had residual filling but reduction of the shunt resulted in clinical improvement. None of the patients had worsening of neurological function. One case was complicated by inadvertent internal carotid puncture but without clinical manifestations. One patient experienced postoperative superior ophthalmic vein thrombosis.

CONCLUSION

In very specific cases, when endovascular access is not possible or fails to occlude cavernous DAVF, direct transorbital puncture of the cavernous sinus was shown to be feasible, safe and very effective.