Infratentorial developmental venous anomaly concurrent with a cavernoma and dural arteriovenous fistula

ObjectivesWhile developmental venous anomaly (DVA) may be associated with cavernous malformation, mixed vascular malformation associated with dural arteriovenous fistula (dAVF) has not been previously reported. We observed a case with rare association of infratentorial DVA, cavernous malformation, and dAVF that presented with cerebellar ataxia. We report our endovascular treatment for this complex cerebrovascular condition.Case presentationA 32-year-old woman with ataxia had an infratentorial DVA associated with a cavernoma and dAVF. The dAVF had two shunting points. The dAVF was fed by the posterior meningeal arteries and drained through the sigmoid sinus into the transverse sinus. The dAVF was also fed by the occipital artery and retrogradely drained through the left jugular bulb into the dilated collecting vein of the DVA. Endovascular embolization was performed for the dAVF and dilated collecting vein of the DVA. Postoperative complications did not occur after embolization with no recurrence for three years.ConclusionsThis is the first reported case of infratentorial DVA associated with a cavernoma and dAVF. Endovascular treatment was effective in treating this symptomatic complex cerebrovascular disorder.     

颅前窝底硬脑膜动静脉瘘的影像学分析及治疗策略

目的探讨颅前窝底硬脑膜动静脉瘘的影像学特点,并根据其而采取不同治疗方式。方法回顾性分析13例颅前窝底硬脑膜动静脉瘘病人的临床资料,病变均通过双侧眼动脉或筛前动脉供血,其中脑膜中动脉前支也参与供血7例。采用开颅手术9例,血管内治疗4例。并分析影像学特征对选择治疗方式的影响。结果术后DSA复查示所有病人的动静脉瘘均消失,均无手术并发症,术后症状逐渐好转。术后1年,DSA复查7例,均未复发。结论开颅手术治疗颅前窝底硬脑膜动静脉瘘是安全、有效的方法,对明确有硬脑膜中动脉前支供血的病变,也可行介入栓塞治疗。     

与板障静脉沟通的硬脑膜动静脉瘘并发颅内出血1例报道及文献复习

目的 总结与板障静脉沟通的硬脑膜动静脉瘘（DAVF）并发颅内出血的诊治经验。方法 回顾性分析血管内介入治疗的1例与板障静脉沟通的DAVF并发颅内出血的临床资料,并结合相关文献分析。结果 62岁男性,左侧肢体肌力0级,头部CT示右侧额顶叶出血;DSA示右侧额顶部DAVF,由右侧脑膜中动脉额顶支供血,经板障静脉、大脑镰静脉引流并因压力增高导致皮层静脉逆流致静脉高压性脑出血;经脑膜中动脉额支注入Onyx胶闭塞瘘口,术后复查造影发现引流静脉消失;术后半年,左侧肢体肌力恢复至4级。结论 与板障静脉沟通的DAVF并发颅内出血为罕见疾病,血管内治疗可达到治愈。     

头颈部少见类型动-静脉瘘的血管内栓塞治疗

目的探讨头颈部少见类型动-静脉瘘血管内栓塞治疗的方法及临床价值。方法创伤性伴有基底动脉动脉瘤的基底动脉-基底静脉丛瘘、原始三叉动脉动脉瘤破裂臻致三叉动脉-海绵窦瘘、自发性和创伤性颈外动脉-海绵窦瘘、创伤性颈内动脉-海绵窦瘘伴有椎动-静脉瘘及创伤性颈内动脉-海绵间窦瘘各1例，对此6例少见类型动-静脉瘘患分别采用机械解脱弹簧圈、电解脱弹簧圈以及可脱性球囊技术进行血管内栓塞治疗。结果创伤性伴有基底动脉动脉瘤的基底动脉-基底静脉丛瘘和创伤性颈内动脉-海绵窦瘘伴有椎动-静脉瘘患分两次伶塞，而原始三叉动脉动脉瘤破裂致三叉动脉-海绵窦瘘、自发性和刨伤性颈外动脉-海绵窦瘘、刨伤性颈内动脉-海绵间窦瘘患均一次完成栓塞治疗。手术后临床症状和体征完全消失。无并发症发生。结论血管内栓塞是治疗头颈部少见类型动-静脉瘘的最佳方法，其操作简单．安全可靠，疗效好，并发症发生率低。应作为首选。     

Endovascular treatment of spontaneous vertebral arteriovenous fistula in children: case report

Spontaneous cervical artery fistulas are rare arteriovenous malformations between the artery and veins of the neighborhood. We report a case of non traumatic vertebral arteriovenous fistula in a girl, aged 9 years, treated by endovascular approach. Under general anesthesia and with fluoroscopic guidance, using a endovascular technique, latex detachable balloons were used to successfully occlude the fistula. Complete clinical and angiographic recovery was achieved and no complications related to the embolization procedure occurred. The result obtained in this case corroborates that endovascular techniques, especially balloon occlusion embolization, has become the standard treatment for this vascular disorder.     

Dural arteriovenous fistula of the transverse sigmoid sinus after transvenous embolization of the carotid cavernous fistula]

We report a case of dural arteriovenous fistula of the transverse-sigmoid sinus after transvenous embolization of the carotid cavernous fistula. A 72-year-old woman presented with left exophthalmos, chemosis, bruit and left abducens nerve palsy in June 1996. Bilateral external and internal carotid angiograms revealed the dural arteriovenous fistula of the cavernous sinus. We embolized the dural arteriovenous fistula using a transvenous approach via the left inferior petrosal sinus. Angiograms demonstrated the complete disappearance of the dural arteriovenous fistula. Two years and six months later, she complained of tinnitus at the retroauricular region. Left external carotid angiograms showed a dural arteriovenous fistula of the transverse-sigmoid sinus fed by occipital, posterior auricular, middle meningeal and superficial temporal arteries. We embolized the dural arteriovenous fistula using a transarterial approach. Her symptoms disappeared but the dural arteriovenous fistula did not disappear completely. We discussed the clinical features and etiology of this case.     

A rare brainstem hemorrhage during transvenous embolization of a cavernous dural arteriovenous fistula

Intravascular treatment of cavernous dural arteriovenous fistula (dAVF) is usually safe and effective. However, we describe a patient with a rare brainstem hemorrhage during transvenous embolization (TVE). A 79-year-old woman suffered from left chemosis and diplopia. Cerebral angiography revealed a left cavernous dAVF with cortical venous drainage. The patient underwent TVE of the cavernous sinus (CS) via the left inferior petrosal sinus. Superior petrosal sinus (SPS) outflow occlusion was performed to avoid venous congestion, followed by superficial middle cerebral vein outflow occlusion, selective shunt occlusion of the middle meningeal artery, and superior orbital vein outflow occlusion. The patient's condition suddenly deteriorated during CS packing. A CT scan revealed a massive brainstem hemorrhage. Cerebral angiography did not show SPS reopening or redistributed drainage to the posterior fossa. Thus, TVE for cavernous dAVF can result in life-threatening vascular complications. Well-planned treatment strategies could avert this rare complication.     

Cerebral foreign body granulomas after mechanical thrombectomy: Two case reports and a review of the literature

ObjectivesA foreign body granuloma after an endovascular intervention is a rare complication. Some cases of foreign body granulomas, especially after coil embolization, have been reported. However, only four cases of foreign body granulomas after mechanical thrombectomy (MT) have previously been reported. The current study reports two cases of post-MT foreign body granulomas, including a biopsy-proven case.Material and MethodsCase 1: A 73-year-old woman presented with complete occlusion of the right middle cerebral artery. Cerebral angiography and MT were successfully performed with improvement in clinical symptoms. Left hemiparesis and a disturbance in attention appeared after discharge and progressed slowly. She was re-admitted to our hospital 120 days after cerebral infarction owing to foreign body granulomas diagnosed on biopsy. Case 2: A 78-year-old man presented with occlusion of the left cervical internal carotid artery and the left middle cerebral artery. Cerebral angiography, percutaneous transluminal angioplasty, and MT were successfully performed. On the 34th day, he experienced progressive consciousness disorder because of foreign body granulomas. Both cases were successfully treated with steroid therapy.ResultsMRI after steroid treatment showed the disappearance of most nodular lesions and improvement of the encephalopathy.ConclusionsThe cause of the granuloma may be an allergic reaction to the hydrophilic polymers that peel from endovascular devices. Steroid therapy is an effective treatment; therefore, neurologists should consider this complication when neurological symptoms or signs on image appears or worsens. A reliable diagnosis is important for prompt treatment.     

A tentorial dural arteriovenous fistula presenting progressive myelopathy: a case report

Abstract We report a case of a dural arteriovenous fistula (DAVF) at the tentorium cerebelli, which presented progressive myelopathy. A 68-year-old man with neurological deterioration of the cervical myelopathy visited our hospital. T₂ weighted magnetic resonance (MR) imaging showed high signal area and edema from the medulla to the upper thoracic spinal cord with flow voids on the dorsal surface of the cord. Angiography showed right tentorial DAVF, which was supplied by the right meningohypophyseal trunk, the middle meningeal artery, the accessory meningeal artery, and was drained into the posterior spinal veins. The patient underwent right retrosigmoid suboccipital craniotomy, then disruption of the fistula was performed by using micro Doppler sonography following endovascular obliteration of the main feeders. Postoperative angiography showed complete obliteration of the fistula. His daily functioning gradually improved up to 6 months after the surgery. Tentorial DAVFs with clinical manifestation of myelopathy are rare. Considering its aggressive nature, early surgical treatment could be necessary. (Received: November 17, 2010, Accepted: December 18, 2010).     

Multiple middle meningeal artery aneurysms associated with fistulous galenic arteriovenous malformation: a case report

Non-traumatic multiple saccular aneurysms of the middle meningeal artery are extremely rare lesions. In our case the patient was a 51-year-old woman admitted with complaints of progressive headache. Magnetic resonance imaging showed a dilatation of the vein of galen malformation. Cerebral angiography revealed multiple saccular aneurysms of the middle meningeal artery and fistulous type of galenic arteriovenous malformation. Only one case of non-traumatic multiple middle meningeal artery aneurysms has been reported until now and this case of multiple multiple middle meningeal artery aneurysms associated with the fistulous type of galenic arteriovenous malformation is unique.     

软脑膜动静脉瘘的血管内介入治疗分析

目的 探讨软脑膜动静脉瘘（PAVF）的临床特征、影像学特征、血管内介入治疗方法及疗效。方法 回顾性分析2013年12月至2019年12月血管内介入治疗的9例PAVF的临床资料。结果 年龄3~23岁,平均（12.3±6.0）岁;头痛5例（颅内出血3例）,癫痫发作3例,肢体无力1例。大脑后动脉供血2例,大脑中动脉供血3例,大脑前动脉供血2例,小脑后下动脉供血1例,大脑中动脉+大脑前动脉供血1例;皮层静脉引流8例,深部静脉引流1例。Onyx胶+弹簧圈栓塞治疗8例,单纯弹簧圈栓塞治疗1例。术后即刻造影显示9例均达到治愈性栓塞。术后未出现手术相关并发症。9例术后随访1~8个月,完成DSA随访6例,320-CTA随访2例,MRA随访1例;9例瘘口均未见复发;8例症状完全缓解,1例口服抗癫痫药物控制癫痫。结论 PAVF是一种罕见的脑血管病,以儿童多见,临床表现多样化;随医学技术的发展,治疗首选血管内介入栓塞,是一种安全、有效的治疗方案。     

A Case of Subcortical Hemorrhage in the Left Temporal Lobe Caused by Multiple Dural Arteriovenous Fistulas

Transverse sinus-sigmoid sinus (TS-SS) dural arteriovenous fistula (dAVF) is common type of dAVF, on the other hand, anterior condylar confluence (ACC) dAVF is relatively rare. There has been no report presenting patients with TS-SS dAVF and ACC dAVF identified simultaneously yet. We present a case of TS-SS dAVF and ACC dAVF that developed subcortical hemorrhage of left temporal lobe. A 66-year-old woman with no past history was transferred to our hospital for sudden-onset consciousness disturbance, and was urgently admitted after the detection of a subcortical hemorrhage in the left temporal lobe. We suspected a dAVF based on magnetic resonance angiography and performed digital subtraction angiography (DSA). DSA revealed that the left occipital artery, left ascending pharyngeal artery, left middle meningeal artery, left tentorial artery, and posterior meningeal artery flowed into the TS-SS and ACC. DSA also showed outflow from the TS-SS to the brain surface through the vein of Labbé and the vein of Trolard. We performed transvenous embolization to prevent re-bleeding, she was then discharged from our hospital and her remaining sensory aphasia gradually improved. In the present study, the active investigation to determine the cause of subcortical hemorrhage led to a definitive diagnosis. The combination of ACC dAVF and TS-SS dAVF has not been reported thus far and this is considered a valuable case.     

Endovascular Treatment of Dural Arteriovenous Fistulas: Single Center Experience

Objective

Treatment of intracranial dural arteriovenous fistulas (dAVFs) remains a challenge. However, after introduction of Onyx, transarterial approach is the preferred treatment option in many centers. We report our experience of dAVFs embolization with special emphasis on transarterial approach.

Methods

Seventeen embolization procedures were performed in 13 patients with dAVFs between Jan 2009 and Oct 2014. Clinical symptoms, location and type of fistulas, embolization methods, complications, radiological and clinical outcomes were evaluated using charts and PACS images.

Results

All 13 patients had symptomatic lesions. The locations of fistulas were transverse-sigmoid sinus in 6, middle fossa dura in 4, cavernous sinus in 2, and superior sagittal sinus in 1 patient. Cognard types were as follows : I in 4, IIa in 2, IIa+IIb in 5, and IV in 2. Embolization procedures were performed ≥2 times in 3 patients. Nine patients were treated with transarterial Onyx embolization alone. One of these required direct surgical puncture of middle meningeal artery. Complete obliteration of fistulas was achieved in 11/13 (85%) patients. There were no complications except for 1 case of Onyx migration in cavernous dAVF. Modified Rankin scale score at post-operative 3 months were 0 in 11, and 3 in 2 patients.

Conclusion

Transarterial Onyx embolization can be a first line therapeutic option in patients with dAVFs. However, transvenous approach should be tried first in cavernous sinus dAVF because of the risk of intracranial migration of liquid embolic materials. Furthermore, combined surgical endovascular approach can be considered as a useful option in inaccessible route.     

颅内硬脑膜动静脉瘘临床特点与预后分析

目的分析颅内硬脑膜动静脉瘘的临床特征并探讨其预后的相关因素。方法纳入南昌大学第一附属医院神经外科2012年3月—2019年9月期间收治48例硬脑膜动静脉瘘(DAVF)患者。以性别、年龄、供血动脉数、皮质静脉引流、瘘口位置、治疗方式及颅内出血作为亚变量进行回顾性分析。在患者出院6个月后,通过门诊及电话,对其进行随访。最后,对收集的数据进行Logistic回归分析。结果脑膜中动脉是DAVF最多见的供血动脉(37.5%)。DAVF患者的首发症状以头痛为主(43.64%)。经血管内介入治疗的DAVF患者较经手术切除的患者预后好3.955倍;无颅内出血患者较伴有颅内出血患者的预后好4.464 (1/0.224)倍。结论对于硬脑膜动静脉瘘患者,尽早明确诊断,首选血管内治疗。     

海绵窦区硬脑膜动静脉瘘的临床表现及血管内介入治疗

目的 探讨海绵窦区硬脑膜动静脉瘘的临床症状及血管内介入治疗的方法和疗效.方法 分析收治的16例海绵窦区硬脑膜动静脉瘘患者临床资料,并对其临床症状、血管内介入治疗方法及疗效进行总结分析.结果 16例患者眼部充血表现(或合并突眼)13例,单纯突眼1例,颞部杂音2例,蛛网膜下腔出血1例.6例单纯南动脉途径应用NBCA进行栓塞,术后瘘口即刻闭塞3例;1例有瘘口残留,随访2个月后症状完全消失;另外2例瘘口残留,但症状明显好转.8例进行了单纯静脉入路栓塞,其中2例应用ONYX和弹簧圈进行栓塞,完全闭塞瘘口;2例分别合并有术后动眼神经和外展神经麻痹,前者术后1个月好转;5例单纯进行了ONYX栓塞:1例由动静脉联合入路进行栓塞,瘘口完全闭塞,1例因瘘口细小进行了颈动脉压迫并观察随访,术后2个月瘘口更加细小,术后3例患者出现眼部并发症,1例为动眼神经麻痹,1个月后好转,1例为复视并外展神经麻痹,1例为结膜充血,眼球疼痛不适,后好转.结论 海绵窦区硬脑膜动静脉瘘临床表现复杂多变.血管内介入治疗是海绵窦区硬脑膜动静脉瘘安全、有效的治疗方法.经动脉入路栓塞,瘘口闭塞率低于静脉入路,但术后眼部并发症发生率亦低,静脉入路瘘口闭塞率高,但应注意防止眼部并发症发生.     

Combined Surgical and Endovascular Management of a Complex Posttraumatic Dural Arteriovenous Fistula of the Tentorium and Straight Sinus

Diagnosis and management of a complex tentorial dural arteriovenous fistula (DAVF) of the straight sinus with vein of Galen aneurysmal dilatation is presented. A 65-year-old woman with remote history of cranial gunshot lapsed into coma after months of progressive neurological decline. Computed tomography brain scan showed cerebellar hemorrhage while arteriography demonstrated a complex arteriovenous fistula of an isolated straight sinus and tentorium with extensive arterial supply. First extracranial then intracranial arterial feeders to the fistula were occluded in separate procedures following initial presentation. Eleven days after presentation, an occipital burr-hole craniotomy was performed, the isolated straight sinus was cannulated under fluoroscopic guidance, and the fistula eradicated with multiple thrombogenic fibered platinum and Gugliemi detachable coils. Staged embolization now represents the standard of care for many complex DAVFs. A multi-disciplinary surgical and endovascular approach is a valuable combination to cure deep lesions with limited surgical or transvascular access.     

Spontaneous Carotid Cavernous Fistula in a Case with Protein S Deficiency that Newly Developed Ophthalmoplegia after Embolization

Background

Carotid cavernous fistula (CCF) is an abnormal communication between the carotid artery and the cavernous sinus. The pathogenesis of spontaneous CCF remains unclear, although sinus thrombosis is known to be a predisposing factor for dural arteriovenous fistula. Because spontaneous CCFs are mainly of the dural type, we considered that thrombogenic conditions, such as, protein S deficiency might be associated with CCF.

Case Report

A 42-year-old woman complained of conjunctival injection and retro-orbital pain that first appeared 1-month before visiting our hospital. She had no history of head trauma or intracranial surgery. Exophthalmos and chemosis were observed in her left eye, which also had lower visual acuity and higher intraocular pressure than the right eye. Magnetic resonance images and cerebral angiography revealed a left dural CCF. Her protein S was low, at 41% (normal range: 70-140%), but other hematologic values related to coagulation were normal. Her symptoms were relieved after initial transvenous coil embolization. However, a newly developed sixth-nerve palsy was detected 4 days after initial embolization. Follow-up angiography revealed a minimal shunt, and thus transvenous coil embolization was repeated. Two days later, the ophthalmoplegia started reducing, and 1-month later it had almost disappeared.

Conclusions

To the best of our knowledge, this is the first report of spontaneous dural CCF in a Korean patient with concurrent protein S deficiency. Interestingly, transient sixth-nerve palsy developed after transvenous coil embolization in this patient. This additional symptom caused by the residual fistula was relieved after additional transarterial embolization.     

Duplicated Middle Cerebral Artery Aneurysms Treated by Coil Embolization; A Report of Two Cases and Literature Review

BackgroundDuplication of the middle cerebral artery (DMCA) is an anomalous vessel arising from the internal carotid artery (ICA). Aneurysms at the origin of a DMCA have been reported; however, most have been treated with clipping surgery. Here, we describe two cases of aneurysms at the origin of a DMCA treated with coil embolization.Case presentationCase 1: A seventy-three year-old man presented with severe headache and was diagnosed with subarachnoid hemorrhage (SAH). Digital subtraction angiography (DSA) and 3-dimensional (3-D) DSA showed an aneurysm arising from a DMCA. Coil embolization was performed with DMCA patency. The patient had an uneventful postoperative course.Case 1A 44-year-old woman presented with a history of clipping for an IC-anterior choroidal artery (AchA) aneurysm 8 years prior. Magnetic resonance imaging (MRI) showed regrowth of the aneurysm. 3-D DSA showed an IC-DMCA aneurysm located laterally and distal to the AchA. The DMCA arose from the bottom of the aneurysm. Coil embolization was performed without DMCA occlusion and showed no postoperative ischemic changes.ConclusionAn IC-DMCA aneurysm is rare and may be misdiagnosed as an AchA aneurysm. Clinicians should perform a 3D-DSA evaluation if the aneurysm arises from the lateral wall of the IC to obtain a precise diagnosis and to preserve the DMCA during coil embolization.     

Anterior cranial fossa dural arteriovenous fistula: Transarterial embolization from the ophthalmic artery as first-line treatment

ObjectiveTo retrospectively review the outcome of patients with dural arteriovenous fistula of the anterior cranial fossa (afDAVF) treated by transarterial embolization.Material and methodsSix consecutive patients were referred to our hospital for afDAVF treatment. After a multidisciplinary discussion, they underwent endovascular embolization with Onyx injection through the ophthalmic artery. Their clinical presentation, management and outcomes were retrospectively assessed.ResultsAll interventions were performed with the liquid embolic agent Onyx through the transarterial route from the ophthalmic artery to access the fistulous point. All patients showed a good outcome with complete afDAVF obliteration.ConclusionThis study demonstrates that afDAVFs can be safely and completely obliterated by transarterial embolization via the ophthalmic artery.     

Occurrence of De Novo Dural Arteriovenous Fistula after Transvenous Embolization of Dural Arteriovenous Fistula : Case Reports of Two Patients

Development of de novo dural arteriovenous fistula (DAVF) at a different site after resolution of an initial DAVF, is rare. Here we report two cases, which we encountered in our hospital. A 68-year-old woman presented with pulsatile tinnitus on the left side. Cerebral angiography demonstrated a left anterior condylar confluence (ACC) DVAF and she underwent transvenous embolization. Four years after this treatment, she presented with tinnitus on the left side, and cerebral angiography revealed a right DAVF around the sinus of the lesser sphenoid wing. Another 69-year-old woman presented with left-sided orbital bruits, chemosis, and conjunctival hyperemia. Cerebral angiography showed left cavernous sinus (CS) DAVF, for which she underwent transvenous embolization for CS DAVF. One year later, she developed a left ACC and transverse-sigmoid sinus (TSS) DAVF.