Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 30
Filtrar
1.
J Stroke Cerebrovasc Dis ; 33(11): 107897, 2024 Jul 26.
Artículo en Inglés | MEDLINE | ID: mdl-39069148

RESUMEN

INTRODUCTION: The Woven EndoBridge (WEB) device is emerging as a novel therapy for intracranial aneurysms, but its use for off-label indications requires further study. Using machine learning, we aimed to develop predictive models for complete occlusion after off-label WEB treatment and to identify factors associated with occlusion outcomes. METHODS: This multicenter, retrospective study included 162 patients who underwent off-label WEB treatment for intracranial aneurysms. Baseline, morphological, and procedural variables were utilized to develop machine-learning models predicting complete occlusion. Model interpretation was performed to determine significant predictors. Ordinal regression was also performed with occlusion status as an ordinal outcome from better (Raymond Roy Occlusion Classification [RROC] grade 1) to worse (RROC grade 3) status. Odds ratios (OR) with 95 % confidence intervals (CI) were reported. RESULTS: The best performing model achieved an AUROC of 0.8 for predicting complete occlusion. Larger neck diameter and daughter sac were significant independent predictors of incomplete occlusion. On multivariable ordinal regression, higher RROC grades (OR 1.86, 95 % CI 1.25-2.82), larger neck diameter (OR 1.69, 95 % CI 1.09-2.65), and presence of daughter sacs (OR 2.26, 95 % CI 0.99-5.15) were associated with worse aneurysm occlusion after WEB treatment, independent of other factors. CONCLUSION: This study found that larger neck diameter and daughter sacs were associated with worse occlusion after WEB therapy for aneurysms. The machine learning approach identified anatomical factors related to occlusion outcomes that may help guide patient selection and monitoring with this technology. Further validation is needed.

2.
Eur J Ophthalmol ; 31(5): 2692-2698, 2021 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-32962409

RESUMEN

PURPOSE: To evaluate the results of secondary intra-arterial chemotherapy (IAC) and/or intravitreal chemotherapy (IVC) as a salvage treatment for retinoblastoma (RB). MATERIALS AND METHODS: The medical records of 31 (20 male, 11 female) cases (with 38 eyes) who underwent secondary IAC and/or IVC between February 2010 and June 2019 were retrospectively reviewed. RESULTS: Thirteen (41.9%) cases had unilateral and 18 (58.1%) had bilateral RB. According to the International Classification of RB, 6 (15.8%) eyes had group B, 9 (23.7%) eyes had group C, 16 (42.1%) eyes had group D, and 7 (18.4%) eyes had group E RB at diagnosis. All patients underwent six-cycle intravenous chemotherapy as primary treatment and 8 eyes received external radiotherapy before IAC/IVC. Secondary IAC was performed in 21 (55.3%) eyes, IVC in 10 (26.3%) eyes, and IAC + IVC in 7 (18.4%) eyes. External radiotherapy was applied in 2 (5.3%) eyes after IAC/IVC, one of which was later enucleated. In total, 17 (44.7%) eyes undergoing secondary IAC/IVC treatments were enucleated. Metastasis and death were not observed in any case during the mean follow-up period of 59.3 (median 61, range: 10-98) months. DISCUSSION: Although 60.5% of the eyes undergoing IAC/IVC consisted of groups D and E RB, globe salvage and survival rates were 55.3% and 100.0%, respectively. External radiotherapy was required in 5.3% of the eyes after IAC/IVC. In conclusion, IAC and IVC are safe and effective treatment methods in eyes with RB unresponsive to other eye-preserving treatments and those demonstrating recurrence.


Asunto(s)
Neoplasias de la Retina , Retinoblastoma , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Carboplatino/uso terapéutico , Femenino , Humanos , Lactante , Infusiones Intraarteriales , Masculino , Neoplasias de la Retina/tratamiento farmacológico , Retinoblastoma/tratamiento farmacológico , Estudios Retrospectivos , Terapia Recuperativa , Resultado del Tratamiento
3.
Turk J Ophthalmol ; 45(6): 259-267, 2015 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-27800245

RESUMEN

Retinoblastoma (RB) is the most common childhood malignant intraocular tumor. Although enucleation and external beam radiotherapy have been historically used, today the most commonly used eye-sparing approach is chemotherapy. Chemotherapy can be used in both intraocular and extraocular RB cases. Chemotherapeutic agents may be applied in different ways, including systemic, subconjunctival, intra-arterial and intravitreal routes. The main purposes of application of systemic therapy are to reduce the tumor size for local treatment (chemoreduction), or to reduce the risk of metastasis after enucleation surgery (adjuvant therapy). Intra-arterial chemotherapy with the current name "super-selective intra-arterial infusion therapy" could be applied as primary therapy in tumors confined to the retina or as a secondary method in tumor recurrence. The most important advantage of intra-arterial therapy is the prevention of systemic chemotherapy complications. Intravitreal chemotherapy is administered in the presence of persistent or recurrent vitreous seeding. The term "extraocular RB" includes orbital invasion and metastatic disease. Current treatment for orbital invasion is neoadjuvant chemotherapy followed by surgical enucleation and adjuvant chemotherapy and radiotherapy after surgery. In metastatic disease, regional lymph node involvement, distant metastases, and/or central nervous system (CNS) involvement may occur. Among them, CNS involvement has the worst prognosis, remaining at almost 100% mortality. In metastatic disease, high-dose salvage chemotherapy and autologous hematopoietic stem cell rescue therapy are the possible treatment options; radiotherapy could also be added to the protocol according to the side of involvement.

5.
Turk Neurosurg ; 22(1): 102-4, 2012.
Artículo en Inglés | MEDLINE | ID: mdl-22274980

RESUMEN

Cerebellar haemorrhage after supratentorial craniotomy is a rare complication Because of its significant morbidity and mortality rates, being aware of this complication is important for early diagnosis. In a 30-year-old male with multiple intracranial cavernomas, remote cerebellar haemorrhage (RCH) was observed after removal of symptomatic left temporal lesion. The lateral wall of the temporal horn that was tightly attached to the cavernoma was also opened and excessive drainage of the CSF occurred. The haemorrhage is attributed to opening of the ventricle wall and excessive drainage of cerebrospinal fluid (CSF) during the procedure.


Asunto(s)
Hemorragia Encefálica Traumática/terapia , Ventrículos Cerebrales/cirugía , Procedimientos Neuroquirúrgicos/efectos adversos , Complicaciones Posoperatorias/terapia , Adulto , Encéfalo/patología , Hemorragia Encefálica Traumática/etiología , Malformaciones Vasculares del Sistema Nervioso Central/complicaciones , Malformaciones Vasculares del Sistema Nervioso Central/patología , Malformaciones Vasculares del Sistema Nervioso Central/cirugía , Craneotomía/efectos adversos , Drenaje , Electroencefalografía , Epilepsia Generalizada/etiología , Humanos , Imagen por Resonancia Magnética , Masculino , Tomografía Computarizada por Rayos X
6.
J Neurosurg ; 115(1): 78-88, 2011 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-21476804

RESUMEN

OBJECT: The purpose of this study was to present the authors' clinical experience and long-term angiographic and clinical follow-up results in 350 patients with brain arteriovenous malformations (AVMs) treated using prolonged intranidal Onyx injection with a very slow "staged" reflux technique described by the authors. METHODS: Three hundred and fifty consecutive patients with brain AVMs treated using Onyx between 1999 and 2008 and in whom definitive status for endovascular treatment was reached are presented. There were 206 (59%) male and 144 (41%) female patients, with a mean age of 34 years. There were 607 endovascular sessions performed. Onyx was the only agent used for intranidal injections in all patients, but in 42 patients high-concentration N-butyl cyanoacrylate glue was used adjunctively to close high-flow direct arteriovenous intra- or perinidal fistulas, or when a feeding vessel or nidus perforation and/or dissection occurred. RESULTS: Angiographically confirmed obliteration was achieved in 179 patients (51%) with only endovascular treatment; 1 patient died due to intracranial hemorrhage after the treatment. Twenty-two patients underwent resection, and 136 patients were sent to radiosurgery after endovascular treatment. In 4 patients embolization therapy was discontinued, and 5 additional patients refused the suggested complementary surgery. In all 178 surviving patients who had angiographically confirmed AVM obliteration by embolization alone, 1-8 years of control angiography (mean 47 months) confirmed stable obliteration, except for 2 patients in whom a very small recruitment was noted in the 1st year on control angiography studies, despite initial apparent total obliteration (recanalization rate 1.1%). In the entire series, 5 patients died; the mortality rate was 1.4%. The permanent morbidity rate was 7.1%. CONCLUSIONS: With the prolonged intranidal injection technique described herein, Onyx allows the practitioner to achieve higher rates of anatomical cures compared with the cure rates obtained previously with other embolic agents. More importantly, due to this technique's much more effective intranidal penetration, it allows high-grade AVMs to be made radiosurgically treatable in a group of patients for whom there has been no treatment alternative.


Asunto(s)
Malformaciones Arteriovenosas/tratamiento farmacológico , Arterias Cerebrales/efectos de los fármacos , Dimetilsulfóxido/administración & dosificación , Embolización Terapéutica/métodos , Polivinilos/administración & dosificación , Adulto , Malformaciones Arteriovenosas/diagnóstico por imagen , Angiografía Cerebral , Arterias Cerebrales/anomalías , Arterias Cerebrales/diagnóstico por imagen , Terapia Combinada/métodos , Cianoacrilatos/administración & dosificación , Dimetilsulfóxido/efectos adversos , Embolización Terapéutica/efectos adversos , Femenino , Estudios de Seguimiento , Humanos , Masculino , Polivinilos/efectos adversos , Factores de Tiempo , Resultado del Tratamiento
7.
J Neurosurg ; 114(4): 944-53, 2011 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-20469985

RESUMEN

OBJECT: The purpose of this paper was to present the safety, efficacy, and clinical/angiographic follow-up results of HyperForm balloon-assisted endosaccular coil occlusion of distal anterior circulation bifurcation aneurysms. METHODS: Over a 7-year period, the authors treated 864 middle cerebral artery, distal anterior cerebral artery bifurcation, and anterior communicating artery aneurysms by means of coil embolization with HyperForm balloon assistance in 800 patients. In 37 aneurysms, 2 HyperForm balloons were used simultaneously for remodeling. RESULTS: The overall mortality rate was 7.1%, including 1.4% procedural mortality. Various neurological deficits were present at discharge in 8.9% of the patients, and 4.4% had permanent disabling morbidity 6 months posttreatment (modified Rankin Scale score ≥ 2). Thromboembolic complications developed during the treatment of 15 aneurysms (1.7%) causing morbidity or mortality in 10 cases (1.3%). There were 14 intraoperative perforations (1.6%). In all 14 cases, the HyperForm balloon saved patients from severe bleeding. The perforation led to morbidity or mortality in 3 cases (0.4%); there were no negative consequences in 11. There were 726 patients with 757 aneurysms (87.6%) available for follow-up. Control angiograms were obtained at 6 months in 386 patients, at 1 year in 267, and at 2 years in 104, revealing an 82% complete obliteration rate according to the most recent follow-up angiograms. CONCLUSIONS: The satisfactory results obtained in this experience demonstrate that HyperForm balloon remodeling provides strong benefits for the endovascular management of middle cerebral, anterior cerebral, and anterior communicating artery aneurysms without increasing the risk of treatment. Not only does this technique allow for the safe treatment of these aneurysms, but it also expands the indications of endovascular treatment to include aneurysms that otherwise cannot be treated with simple coil embolization.


Asunto(s)
Cateterismo/métodos , Enfermedades Arteriales Cerebrales/cirugía , Procedimientos Endovasculares/métodos , Aneurisma Intracraneal/cirugía , Procedimientos Neuroquirúrgicos/métodos , Adolescente , Adulto , Anciano , Anticoagulantes/uso terapéutico , Arteria Carótida Interna/patología , Angiografía Cerebral , Enfermedades Arteriales Cerebrales/mortalidad , Hemorragia Cerebral/epidemiología , Hemorragia Cerebral/etiología , Embolización Terapéutica , Femenino , Estudios de Seguimiento , Heparina/uso terapéutico , Humanos , Aneurisma Intracraneal/mortalidad , Masculino , Persona de Mediana Edad , Arteria Cerebral Media/cirugía , Enfermedades del Sistema Nervioso/epidemiología , Enfermedades del Sistema Nervioso/etiología , Complicaciones Posoperatorias/epidemiología , Tromboembolia/epidemiología , Tromboembolia/etiología , Resultado del Tratamiento , Adulto Joven
8.
Turk Neurosurg ; 20(4): 533-5, 2010 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-20963706

RESUMEN

We present a very rare case of intracranial xanthoma with bilateral temporal bone involvement. The lesion caused destruction and remodelling in mastoid air cells. On the right side, cerebellar compression was obvious. The patient was operated on the symptomatic side and the lesion was totally removed.


Asunto(s)
Hiperlipoproteinemia Tipo II/complicaciones , Hueso Temporal/cirugía , Xantomatosis/etiología , Xantomatosis/cirugía , Humanos , Imagen por Resonancia Magnética , Masculino , Hueso Temporal/patología , Xantomatosis/patología , Adulto Joven
9.
J Neurosurg ; 112(4): 709-13, 2010 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-19799497

RESUMEN

OBJECT: The primary goal of this matched-pair analysis was to evaluate the durability of the treatment results with Cerecyte coils in comparison with that of bare platinum coils in terms of angiographic occlusion rates at follow-up. METHODS: Eighty aneurysms treated with Cerecyte coils were included in this study to carry out a matched-pair analysis. Every aneurysm treated with Cerecyte coils was matched with an aneurysm treated with bare platinum coils. Matching of the aneurysms was done according to the aneurysm size, location, neck size, initial occlusion grade, and clinical presentation. RESULTS: The initial treatment results were similar in both groups as part of a matching protocol. Subgroup analysis revealed a significant difference in the durability of occlusion in aneurysms that showed Raymond Class I obliteration on follow-up angiograms (69 [86.2%] in the Cerecyte group vs 51 [63.8%] in the control group, p = 0.002). Further thrombosis to Raymond Class I occlusions was higher in the Cerecyte group (17 [77.3%] of 22 vs 8 [36.4%] of 22 aneurysms). CONCLUSIONS: Cerecyte coils provide further thrombosis and more durable results than bare platinum coils following coil embolization of cerebral aneurysms.


Asunto(s)
Embolización Terapéutica/instrumentación , Embolización Terapéutica/métodos , Aneurisma Intracraneal/terapia , Platino (Metal) , Ácido Poliglicólico , Adolescente , Adulto , Anciano , Angiografía Cerebral , Materiales Biocompatibles Revestidos , Femenino , Estudios de Seguimiento , Humanos , Aneurisma Intracraneal/diagnóstico por imagen , Masculino , Análisis por Apareamiento , Persona de Mediana Edad , Estudios Retrospectivos , Resultado del Tratamiento
10.
Neurosurgery ; 65(1): E206-7; discussion E7, 2009 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-19574801

RESUMEN

OBJECTIVE: Aneurysms originating from perforating branches of the middle cerebral artery are quite rare. Most of them arise from the lenticulostriate arteries, frequently located within the basal ganglia. We report a perforating artery aneurysm that was entirely embedded within the limen insulae. CLINICAL PRESENTATION: A 41-year-old man presented with an insular hematoma without subarachnoid hemorrhage caused by rupture of a small aneurysm on a perforating artery of the proximal middle cerebral artery supplying the insula. INTERVENTION: This rare aneurysm was resected via the transsylvian-insular approach. CONCLUSION: Although very rare, perforating artery aneurysms should be considered in young or middle-aged patients with an atypical intracerebral hematoma. This report discusses radiological and surgical characteristics of this unusual aneurysm.


Asunto(s)
Aneurisma Roto/patología , Aneurisma Roto/cirugía , Corteza Cerebral/cirugía , Craneotomía/métodos , Procedimientos Neuroquirúrgicos/métodos , Adulto , Angiografía Cerebral/métodos , Humanos , Masculino
11.
J Stroke Cerebrovasc Dis ; 18(4): 298-303, 2009.
Artículo en Inglés | MEDLINE | ID: mdl-19560685

RESUMEN

A 22-year-old woman with congenital afibrinogenemia presented with acute-onset rapidly progressive quadriparesis as a result of spinal cord infarction caused by vertebral artery dissection. Magnetic resonance imaging scans showed microhemorrhages in addition to edematous swelling suggesting acute ischemia throughout cervical and upper thoracic portions of the spinal cord. Fat-saturated T1-weighted magnetic resonance examination and digital subtraction angiography studies demonstrated cervical vertebral artery dissection on the right. This case provides an example of how a primary bleeding disorder could result in a severe ischemic complication caused by an occlusive vessel wall hematoma. Along with other reports, diagnostic and therapeutic aspects of this paradoxical situation were discussed in the particular setting of acute spinal cord ischemia.


Asunto(s)
Afibrinogenemia/complicaciones , Isquemia de la Médula Espinal/etiología , Isquemia de la Médula Espinal/patología , Médula Espinal/patología , Disección de la Arteria Vertebral/etiología , Disección de la Arteria Vertebral/patología , Enfermedad Aguda , Afibrinogenemia/congénito , Angiografía de Substracción Digital , Progresión de la Enfermedad , Células Endoteliales/metabolismo , Células Endoteliales/patología , Femenino , Fibrinolíticos/uso terapéutico , Humanos , Imagen por Resonancia Magnética , Metilprednisolona/uso terapéutico , Dolor de Cuello/etiología , Paresia/etiología , Paresia/patología , Paresia/fisiopatología , Inhibidores de Agregación Plaquetaria/uso terapéutico , Cuadriplejía/etiología , Cuadriplejía/patología , Cuadriplejía/fisiopatología , Recuperación de la Función/efectos de los fármacos , Recuperación de la Función/fisiología , Médula Espinal/irrigación sanguínea , Médula Espinal/fisiopatología , Isquemia de la Médula Espinal/fisiopatología , Resultado del Tratamiento , Arteria Vertebral/diagnóstico por imagen , Arteria Vertebral/patología , Arteria Vertebral/fisiopatología , Disección de la Arteria Vertebral/diagnóstico por imagen , Adulto Joven
12.
Rheumatol Int ; 29(11): 1349-53, 2009 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-19093117

RESUMEN

Severe primary central nervous system (CNS) involvement such as vasculitis and pachymeningitis can rarely occur in rheumatoid arthritis (RA) even in the absence of systemic disease activation. The authors illustrate a female patient with well-controlled RA who presented with headaches, encephalopathy, seizures and relapsing focal neurological deficits. Primary rheumatoid cerebral vasculitis and pachymeningitis were diagnosed based on suggestive brain magnetic resonance (MR) imaging, MR angiography, cerebrospinal fluid analysis and cerebral angiography. MR showed abnormal leptomeningeal enhancement and hyperintense FLAIR signal in the cortical subarachnoid spaces consistent with pachymeningitis. Cerebral angiography findings were consistent with vasculitis. Aggressive treatment resulted in significant clinicoradiological resolution. Cerebral vasculitis is a rare but certain manifestation of RA. This complication can be diagnosed in the presence of suggestive angiographic and CSF findings. The condition may be steroid resistant, and needs to be treated more aggressively.


Asunto(s)
Artritis Reumatoide/complicaciones , Meningitis/etiología , Vasculitis del Sistema Nervioso Central/etiología , Electroencefalografía , Femenino , Humanos , Imagen por Resonancia Magnética , Meningitis/diagnóstico , Meningitis/terapia , Persona de Mediana Edad , Vasculitis del Sistema Nervioso Central/diagnóstico , Vasculitis del Sistema Nervioso Central/terapia
13.
J Neurosurg ; 109(3): 445-53, 2008 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-18759575

RESUMEN

OBJECT: The WingSpan stent is a new self-expandable neurovascular stent designed for endovascular treatment of intracranial atheromatous lesions. The authors report their experience with the use of this stent for the endovascular treatment of intracranial aneurysms. METHODS: Thirty-seven patients with 40 wide-necked intracranial aneurysms were treated using the WingSpan stent. Twenty-two aneurysms (55%) were small and 18 (45%) were large or giant. In all but 4 aneurysms, embolization was completed by packing the aneurysm sac with platinum coils. In 4 dissecting aneurysms that were fusiform or too small and wide necked to be catheterized, the stent was used alone. In these cases, the stent bridged the aneurysm neck to allow for flow redirection and the potential stent-induced endothelization effect. RESULTS: Follow-up angiograms obtained in 3 of 4 aneurysms, treated with only stent placement, demonstrated aneurysmal thrombosis and parent artery remodeling in 2 patients and moderate decrease in size in 1. Follow-up angiography obtained at 6 months to 1 year in 31 aneurysms after stent-supported coil embolization demonstrated complete occlusion in 23 aneurysms (74.2%) with a progressive thrombosis rate of 66.7% (10 of 15 aneurysms), and a recanalization rate of 16.1%. CONCLUSIONS: In treating wide-necked intracranial aneurysms, the WingSpan Stent System is very flexible, secure, and effective. Its delivery system is very easy and exact in that it exerts higher outward radial force, thus providing an excellent conformability and a strong scaffold to hold the coils in place. It may offer an effective treatment when used alone in some fusiform or very wide-necked, small dissecting aneurysms in which other surgical or endovascular treatment strategies are not deemed feasible.


Asunto(s)
Angioplastia , Implantación de Prótesis Vascular , Embolización Terapéutica/instrumentación , Aneurisma Intracraneal/terapia , Stents , Adolescente , Adulto , Niño , Diseño de Equipo , Femenino , Estudios de Seguimiento , Humanos , Aneurisma Intracraneal/diagnóstico por imagen , Aneurisma Intracraneal/patología , Masculino , Persona de Mediana Edad , Radiografía , Factores de Tiempo , Resultado del Tratamiento
14.
Neuroradiology ; 50(9): 787-93, 2008 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-18483727

RESUMEN

INTRODUCTION: The Cerecyte coils were developed to improve long-term stability of embolized cerebral aneurysms by producing an increased fibrous reaction over the neck of the aneurysms. We report our preliminary clinical experience with mid-term follow-up. MATERIALS AND METHODS: Seventy-eight consecutive patients with 84 intracranial aneurysms treated exclusively with Cerecyte coils were included in this study. Forty-eight aneurysms were ruptured and 36 were incidental. Twenty-two aneurysms were small with (<10 mm) small neck (<4 mm) (SASN); 55 were small with wide neck (>or=4 mm) (SAWN); six were large (10-25 mm) (L); and one was giant (G) (>25 mm). The embolization technique was the same with that in standard bare coiling. RESULTS: Immediate post-procedure angiography demonstrated complete aneurysm occlusion in 69%, neck remnant in 29.8% and incomplete occlusion in 1.2%. Follow-up angiography was obtained in 80 aneurysms in a period of time ranging from 6 months to 2 years. The overall recanalization rate was 11.3%, and the re-treatment rate was 6.3%; in the subgroup analysis, recanalization rates were 4.5% in S/S; 9.8% in S/W; and 33.3% in large aneurysms. The only giant aneurysm also showed recanalization. Procedure-related morbidity and mortality rates were 2.6% and 1.3%, respectively. CONCLUSIONS: Our midterm results showed a relatively low rate of recurrence compared to those reported for platinum coils with morbidity and mortality rates comparable to those with standard bare platinum coils. The efficacy of Cerecyte coils in the long term will be specifically addressed by the ongoing randomized Cerecyte coil trial.


Asunto(s)
Angioplastia , Embolización Terapéutica/instrumentación , Aneurisma Intracraneal/terapia , Adulto , Anciano , Materiales Biocompatibles Revestidos , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Platino (Metal) , Ácido Poliglicólico , Estudios Prospectivos , Resultado del Tratamiento
15.
J Vasc Interv Radiol ; 19(4): 504-508, 2008 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-18375293

RESUMEN

PURPOSE: To determine the incidence of venous thromboembolism (VTE) after removal of retrievable inferior vena cava (IVC) filters. MATERIALS AND METHODS: Retrospective study was conducted of 67 patients who underwent 72 consecutive filter retrievals at a single institution. Data collected included VTE status at the time of filter placement, anticoagulant medications at the time of filter retrieval and afterward, new or recurrent VTE after filter removal, and insertion of subsequent filters. Patient questionnaires were completed in 50 cases, chart review in all patients. RESULTS: At the time of filter placement, 30 patients had documented VTE, 19 had a history of treated VTE, and 23 were at risk for but had neither previous nor present VTE. Mean duration of follow-up after filter removal was 20.6 months +/- 10.9. A total of 52 patients (57 filters) received anticoagulation and/or antiplatelet medications after filter removal. There were two documented episodes of recurrent deep vein thrombosis (2.8% of filters removed), both in patients who had VTE at the time of filter placement and underwent therapeutic anticoagulation at the time of filter removal. One of these patients (1.4% of filters removed) also experienced pulmonary embolism. Of the 23 patients without VTE when the filter was placed, none developed VTE after filter removal. Four patients (5.5% of filters removed) required subsequent permanent filters, three for complications of anticoagulation, one for failure of anticoagulation. CONCLUSIONS: VTE was rare after removal of IVC filters, but was most likely to occur in patients who had VTE at the time of filter placement.


Asunto(s)
Remoción de Dispositivos/efectos adversos , Tromboembolia/etiología , Filtros de Vena Cava , Vena Cava Inferior , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Niño , Femenino , Humanos , Masculino , Persona de Mediana Edad , Recurrencia , Estudios Retrospectivos , Encuestas y Cuestionarios , Tromboembolia/prevención & control
16.
Neuroradiology ; 50(2): 179-83, 2008 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-18046546

RESUMEN

Extracranial internal carotid aneurysms are rare, but the complications associated with the traditional surgical reconstruction methods are relatively high. Endovascular treatment has replaced surgery for treatment of a variety of vascular problems. We describe here the treatment of a recurrent extracranial internal carotid artery aneurysm using a detachable balloon combined with the Amplatzer vascular plug.


Asunto(s)
Aneurisma/terapia , Arteria Carótida Interna , Embolización Terapéutica/instrumentación , Adulto , Diseño de Equipo , Femenino , Humanos
17.
Neuroradiology ; 49(12): 1015-21, 2007 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-17909777

RESUMEN

PURPOSE: The aim of this study was to evaluate the stability of occlusion of terminal bifurcation aneurysms after embolization with hydrogel-coated coils. METHODS: Of 35 bifurcation aneurysms, 34 were treated with hydrogel-coated coils in combination with platinum coils, and 1 was treated with hydrogel-coated coils only. Aneurysms were located at the basilar tip in 17 patients, and the internal carotid artery (ICA) bifurcation in 18 patients. The patient population consisted of 20 women and 15 men with ages ranging from 21 to 65 years. The aneurysm was found in 16 patients on presentation for subarachnoid hemorrhage, and in 19 patients the finding was incidental. Of the 35 aneurysms, 25 were small, 9 were large and 1 was giant. The giant aneurysm was located at the basilar tip and showed partial thrombosis. All except two basilar tip aneurysms were treated with balloon assistance. The remaining two basilar tip aneurysms were embolized with the assistance of an aneurysmal neck bridge device. RESULTS: The mean percentage occluded aneurysm volume for all devices was in the range 34-100%. Follow-up angiograms were obtained at 1 year in 6 patients, 2 years in 11 patients, and 3 years in 18 patients. Angiograms obtained immediately after embolization demonstrated a Raymond class 1 occlusion in 29 patients (82.9%) and a Raymond class 2 occlusion in 6 patients (17.1%). In four of these six patients follow-up angiograms demonstrated regrowth with resultant Raymond class 3 occlusion. In the other two patients, Raymond class 2 occlusion remained stable on follow-up angiograms. In patients who had a Raymond class 1 occlusion on the angiogram obtained immediately after embolization, no regrowth was seen on the follow-up angiograms. The overall recanalization rate was 11.4% (three large, one giant) at 6 months. Retreatment was not considered in three of these patients and they were to be followed; the other patient was retreated. CONCLUSION: Our initial procedural data demonstrate that higher volumetric occlusion was achieved with hydrogel-coated coils and the long-term follow-up results showed a favorably low recanalization rates among the terminal bifurcation aneurysms.


Asunto(s)
Arteria Basilar , Arteria Carótida Interna , Embolización Terapéutica/instrumentación , Aneurisma Intracraneal/terapia , Adulto , Anciano , Angiografía Cerebral , Materiales Biocompatibles Revestidos , Femenino , Humanos , Masculino , Persona de Mediana Edad , Recurrencia , Resultado del Tratamiento
18.
J Neurosurg ; 107(1): 49-55, 2007 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-17639873

RESUMEN

OBJECT: Stent-assisted embolization is an alternative endovascular treatment method for wide-necked intracranial aneurysms. Currently available stents have the limitations of poor radial force, difficult delivery systems, and lack of full retrievability. The authors report on their preliminary experience with the use of a new, fully retrievable, self-expanding neurovascular stent, which has a high radial force and easy delivery system, combined with coil or Onyx embolization for the treatment of wide-necked aneurysms, including 6-month follow-up data. METHODS: Fifteen patients with 18 wide-necked intracranial aneurysms were treated using the SOLO stent system and detachable platinum coils. Aneurysms were located at the posterior communicating artery (seven lesions), midbasilar artery (one lesion), internal carotid artery (ICA) bifurcation (one lesion), ICA-ophthalmic artery segment (eight lesions), and posterior cerebral artery (one lesion). Eleven aneurysms were small, six were large, and one was giant. Only one of these aneurysms was in the acute stage of subarachnoid hemorrhage; balloon remodeling alone failed to keep the coils in the aneurysm sac. RESULTS: Only one stent required retrieving and repositioning after it had been fully deployed, and retrieval was easy and successful. No thromboembolic complication, dissection/rupture, or vasospasm occured during stent placement. Follow-up angiograms obtained at 6 months posttreatment in the 18 aneurysms demonstrated that all stents were patent with no evidence of intimal hyperplasia or stenosis. In all cases but one, 100% lesion occlusion was observed at the 6-month control angiography examination. Only one aneurysm had recanalized. CONCLUSIONS: The fully retrievable self-expandible SOLO stent is a feasible, secure, and effective system with a high radial force and ease of delivery in treating wide-necked intracranial aneurysms in combination with coil embolization.


Asunto(s)
Enfermedades de las Arterias Carótidas/terapia , Embolización Terapéutica/instrumentación , Aneurisma Intracraneal/terapia , Stents , Adulto , Anciano , Enfermedades de las Arterias Carótidas/complicaciones , Enfermedades de las Arterias Carótidas/diagnóstico por imagen , Angiografía Coronaria , Diseño de Equipo , Femenino , Estudios de Seguimiento , Humanos , Aneurisma Intracraneal/diagnóstico por imagen , Aneurisma Intracraneal/epidemiología , Masculino , Persona de Mediana Edad
19.
Kobe J Med Sci ; 53(1-2): 43-7, 2007.
Artículo en Inglés | MEDLINE | ID: mdl-17582203

RESUMEN

Hemostatic agents, routinely used in neurosurgery to achieve intraoperative hemostasis may cause foreign body reaction. These may produce clinically symptomatic and radiologically apparent mass lesions. It should be kept in mind that retained cotton or rayon materials may mimic the appearance of a tumor or an abscess on MRI scan, especially at sides of previous craniotomies. Here we report a case of intracranial foreign body granuloma which occurred due to remained cottonoid after removal of a parasagittal meningioma. This entity was also documented by MR imaging technics included diffusion weighted, flair and ADC mapping.


Asunto(s)
Fibra de Algodón , Granuloma de Cuerpo Extraño/diagnóstico , Neoplasias Meníngeas/cirugía , Meningioma/cirugía , Complicaciones Posoperatorias/diagnóstico , Adulto , Granuloma de Cuerpo Extraño/diagnóstico por imagen , Granuloma de Cuerpo Extraño/patología , Humanos , Masculino , Complicaciones Posoperatorias/diagnóstico por imagen , Complicaciones Posoperatorias/patología , Radiografía
20.
Neuroradiology ; 49(9): 739-46, 2007 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-17594084

RESUMEN

INTRODUCTION: We evaluated the safety and efficacy of the Angio-Seal closure device used to close arterial puncture sites in patients who had undergone diagnostic cerebral angiography and neurointerventional procedures. METHODS: A total of 1,443 Angio-Seal devices were placed in 1,099 patients in the Interventional Neuroradiology Unit between May 2005 and August 2006. Of these, 670 were interventional and 745 were diagnostic cerebral angiographic procedures. In 28 patients bilateral puncture of the femoral arteries was performed for endovascular treatment. In 167 patients 286 repeat diagnostic procedures were performed and 30 interventional procedures were followed by re-closure with an Angio-Seal device at the time of repeat puncture. RESULTS: The procedural success rate for antegrade closures was 99.7% for all procedures. The device failed in 5 of 745 diagnostic procedures (0.7%). Major complication occurred in one patient only (0.13%) in the diagnostic group. No minor complications were observed in this group. In the interventional group, the major complication rate was 1.4% (10 of 698 closures) and the minor complication rate was 2.4% (17 of 698 closures). However, in the subgroup of patients with cerebral aneurysms who received heparin in combination with antiplatelet agents after the procedure, the major complication rate was 5.3%, but in the carotid/vertebral stenting group it was 0.8%. CONCLUSION: Our experience in a relatively large series of patients shows that the use of the Angio-Seal STS vascular closure device is safe and effective in patients undergoing cerebral diagnostic angiography and neurointerventional procedures with an acceptable rate of complications, although the complication rate was higher in the group of patients who received heparin and/or antiplatelet medication.


Asunto(s)
Angioplastia , Encefalopatías/diagnóstico por imagen , Encefalopatías/cirugía , Angiografía Cerebral , Hemostasis Quirúrgica/instrumentación , Técnicas de Sutura/instrumentación , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Estudios de Cohortes , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Resultado del Tratamiento
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA