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Ahmedov ML, Tahmazoglu B, Aydin S, Kartum TA, Mergen B, Yildirim SR, Kemerdere R, Tanriover N. Endoscopic Endonasal Optic Nerve Decompression in Idiopathic Intracranial Hypertension: When to Implement Optic Nerve Sheath Fenestration. Oper Neurosurg (Hagerstown) 2023; 25:315-323. [PMID: 37345928 DOI: 10.1227/ons.0000000000000806] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 05/02/2023] [Indexed: 06/23/2023] Open
Abstract
BACKGROUND AND OBJECTIVE Idiopathic intracranial hypertension (IIH) is a syndrome characterized with increased intracranial pressure and normal cerebrospinal fluid (CSF) composition. Treatment is mainly conservative, whereas CSF diversion surgery is the most frequently used surgical intervention. Endoscopic endonasal optic nerve decompression (EOND) is a newer surgical treatment of this patient group. This study presents a single clinic's case series with comparative results of unilateral an bilateral EOND with or without optic nerve fenestration. METHODS Sixteen patients with IIH syndrome who underwent 18 EOND procedures by a single neurosurgeon were evaluated with MRI and digitally subtracted angiography preoperatively. Both preoperative and postoperative visual acuity and perimetry and fundoscopy examinations were routinely performed. All patients underwent sphenoidotomy using the endoscopic binostril approach; however, unilateral or bilateral optic nerve decompression and accompanying optic sheath fenestration was determined on a case-by-case basis, after which all patients were also evaluated for the outcome of headaches. RESULTS Most of the patients were female, and the mean age was 30.28 ± 9.78 years. CSF pressure was increased in all patients (406.43 ± 112.91 mm of H 2 O), and the follow-up period was 61.72 ± 21.67 months. In patients with unilateral EOND, visual fields improved in 83%, visual acuity in 70%, headache in 75%, and papilledema in 27% of cases. In patients with bilateral EOND, perimetry improved in 86%, visual acuity in 43%, headache in 50%, and papilledema in 57% of cases. CONCLUSION EOND is an effective surgical option in the treatment of IIH. Bilateral decompression is preferable in patients with bilateral visual involvement, and optic nerve fenestration may prove to be helpful in patients with IIH whose primary complaint is headache.
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Affiliation(s)
- Merdin Lyutviev Ahmedov
- Department of Neurosurgery, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpaşa, İstanbul, Turkey
| | - Burak Tahmazoglu
- Department of Neurosurgery, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpaşa, İstanbul, Turkey
| | - Seckin Aydin
- Department of Neurosurgery, Okmeydani Training and Research Hospital, Health Sciences University, İstanbul, Turkey
| | - Tufan Agah Kartum
- Department of Neurosurgery, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpaşa, İstanbul, Turkey
| | - Burak Mergen
- Department of Ophtalmology, Başakşehir Çam Sakura City Hospital, Health Sciences University, İstanbul, Turkey
| | - Senihe Rengin Yildirim
- Department of Ophthalmology, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, İstanbul, Turkey
| | - Rahşan Kemerdere
- Department of Neurosurgery, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpaşa, İstanbul, Turkey
| | - Necmettin Tanriover
- Department of Neurosurgery, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpaşa, İstanbul, Turkey
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Corecha Santos R, Gupta B, Santiago RB, Sabahi M, Kaye B, Dabecco R, Obrzut M, Adada B, Velasquez N, Borghei-Razavi H. Endoscopic endonasal optic nerve sheath decompression (EONSD) for idiopathic intracranial hypertension: Technical details and meta-analysis. Clin Neurol Neurosurg 2023; 229:107750. [PMID: 37146367 DOI: 10.1016/j.clineuro.2023.107750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 04/24/2023] [Accepted: 04/26/2023] [Indexed: 05/07/2023]
Abstract
BACKGROUND The neurosurgical management of idiopathic intracranial hypertension (IIH) remains controversial. Although shunting and newer endovascular stenting techniques are part of the neurosurgical armamentarium to treat medically refractory IIH symptoms, optic nerve sheath fenestration has traditionally been performed by ophthalmologists. OBJECTIVE We present a detailed cadaveric dissection that simulates the endoscopic endonasal optic nerve sheath decompression (EONSD) technique along with the literature review. METHODS EONSD was performed in four freshly injected cadaveric specimens. Additionally, a systematic review from different electronic databases has been done. RESULTS Bilateral EONSD was performed in all specimens without significant technical difficulties. Based on our experience, there is no need to expose the periorbita or orbital apex. The primary anatomic landmarks were the optic canal, the lateral opticocarotid recess, the tuberculum, the limbus, and the clinoid segment of the internal carotid artery. Based on the systematic review, 68 patients (77.9% female) underwent EONSD, with a mean age of 33.4 ± 6.9 years in adult patients. Follow-up ranged from 3 to 58 months across different studies. The pooled meta-analysis showed headache, papilledema, and visual disturbance improvement in 78% [95%CI 0.65-0.90], 72% [95%CI 0.61-0.83], and 88% [95%CI 0.80-0.96] of cases who underwent EONSD, respectively. The subgroup analysis showed there was no statistically significant difference between unilateral and bilateral EONSD in terms of different measured outcomes. CONCLUSION EONSD is a feasible surgical procedure that may obviate the need for shunting in patients with IIH. Although clinical studies showed that EONSD is a safe and effective technique, further studies are required to establish the preferences of either unilateral or bilateral approaches.
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Affiliation(s)
- Romel Corecha Santos
- Department of Neurosurgery, Cleveland Clinic Florida, 2950 Cleveland Clinic Blvd., Weston, FL 33331, USA
| | - Bhavika Gupta
- Department of Neurosurgery, Cleveland Clinic Florida, 2950 Cleveland Clinic Blvd., Weston, FL 33331, USA
| | - Raphael Bastianon Santiago
- Department of Neurosurgery, Cleveland Clinic Florida, 2950 Cleveland Clinic Blvd., Weston, FL 33331, USA
| | - Mohammadmahdi Sabahi
- Department of Neurosurgery, Cleveland Clinic Florida, 2950 Cleveland Clinic Blvd., Weston, FL 33331, USA
| | - Brandon Kaye
- Department of Neurosurgery, Cleveland Clinic Florida, 2950 Cleveland Clinic Blvd., Weston, FL 33331, USA
| | - Rocco Dabecco
- Department of Neurosurgery, Cleveland Clinic Florida, 2950 Cleveland Clinic Blvd., Weston, FL 33331, USA
| | - Michal Obrzut
- Department of Neurosurgery, Cleveland Clinic Florida, 2950 Cleveland Clinic Blvd., Weston, FL 33331, USA
| | - Badih Adada
- Department of Neurosurgery, Cleveland Clinic Florida, 2950 Cleveland Clinic Blvd., Weston, FL 33331, USA
| | - Nathalia Velasquez
- Department of Otolaryngology, Cleveland Clinic Florida, 2950 Cleveland Clinic Blvd., Weston, FL 33331, USA
| | - Hamid Borghei-Razavi
- Department of Neurosurgery, Cleveland Clinic Florida, 2950 Cleveland Clinic Blvd., Weston, FL 33331, USA.
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Alternative Path for Optic Nerve Decompression in Pseudotumor Cerebri With Full Endoscopic Lateral Transorbital Approach. J Craniofac Surg 2022; 34:1089-1092. [PMID: 36730888 DOI: 10.1097/scs.0000000000009096] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Accepted: 09/04/2022] [Indexed: 02/04/2023] Open
Abstract
Endonasal endoscopic approaches are the most preferred surgical methods in patients with pseudotumor cerebri because of easy access to the optic nerve, but the choice of this technique may not apply to all endoscopic endonasal cases. Moreover, there may be difficulties in practice in some cases, including the coronavirus disease 2019 pandemic. This study aimed to suggest an alternative endoscopic approach by lateral orbitotomy for optic nerve decompression in patients with pseudotumor cerebri. The study was performed using 5 fresh-frozen cadaver heads (bilaterally, total of 10 sides) injected intravenously with colored silicone preserved in the cold chain. An average of 2.5 cm skin incision was made to fit the lateral orbitotomy. The lengths of the recurrent meningeal artery (mm), the meningo-orbital band (mm), and the optic nerve (mm) to the orbital margin were measured. After these morphometric measurements, optic nerve decompression was performed endoscopically, and the length of the decompression was measured (mm). The average length (mm) between the orbital rim and meningeal recurrent artery (or meningolacrimal branch) was 16.2 mm, between the orbital rim and the meningo-orbital band was 18.5 mm, and between the orbital rim and optic nerve was 44.1 mm. The average optic nerve decompression length was 4.4 mm. The endoscopic lateral orbitotomy approach provides easy access to the optic nerve by anatomically following the recurrent meningeal artery and the meningo-orbital band. It can be a safe second-line approach after endonasal approaches for optic nerve decompression in pseudotumor cerebri.
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Wadikhaye R, Alugolu R, Mudumba VS. A 270-Degree Decompression of Optic Nerve in Refractory Idiopathic Intracranial Hypertension Using an Ultrasonic Aspirator - A Prospective Institutional Study. Neurol India 2021; 69:49-55. [PMID: 33642270 DOI: 10.4103/0028-3886.310080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background Although the nonsurgical treatment for idiopathic intracranial hypertension (IIH) involves weight loss, diuretics, and steroids, surgical intervention is required if there is a worsening of symptoms or visual deterioration. Objective To determine the efficacy and complications of transcranial optic nerve sheath fenestration (ONSF) using an ultrasonic aspirator as an adjunct in the treatment of refractory IIH. Material and Methods This prospective study included all patients with medically refractory IIH with visual deterioration from November 2017 to June 2019. Pterional craniotomy was followed by extradural clinoidectomy and optic foramen bony decompression using an ultrasonic aspirator. All the cases were followed up for changes in visual acuity and field and surgical outcomes. Results A total of 21 consecutive patients who underwent ONSF in the study period were included for analysis. Improvement in visual acuity was noted in 19/21 (90.47%) patients. Improvement in visual fields was noted in 17/21 (80.95%). Headache improved in 66.67% of patients. Improvement in the fundus picture was noted in 90.47%. Symptoms < 6 months showed better results compared to > 6 months symptom, although statistically nonsignificant (P = 0.2556). A 270-degree optic canal decompression was achieved in all the cases. Conclusion Transcranial optic nerve sheath decompression with a bone ultrasonic aspirator is a safe and direct decompression of the optic nerve in malignant/refractory cases of IIH.
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Affiliation(s)
- Rohit Wadikhaye
- Department of Neurosurgery, Nizam's Institute of Medical Sciences, Punjagutta, Hyderabad, Telangana State, India
| | - Rajesh Alugolu
- Department of Neurosurgery, Nizam's Institute of Medical Sciences, Punjagutta, Hyderabad, Telangana State, India
| | - Vijaya Saradhi Mudumba
- Department of Neurosurgery, Nizam's Institute of Medical Sciences, Punjagutta, Hyderabad, Telangana State, India
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Endoscopic Optic Nerve Decompression: Indications, Technique, Results. CURRENT OTORHINOLARYNGOLOGY REPORTS 2019. [DOI: 10.1007/s40136-019-00235-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Surgical Freedom Evaluation During Optic Nerve Decompression: Laboratory Investigation. World Neurosurg 2017; 101:227-235. [DOI: 10.1016/j.wneu.2017.01.117] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 01/27/2017] [Accepted: 01/30/2017] [Indexed: 12/20/2022]
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Tarrats L, Hernández G, Busquets JM, Portela JC, Serrano LA, González-Sepúlveda L, Sánchez-Pérez JR. Outcomes of endoscopic optic nerve decompression in patients with idiopathic intracranial hypertension. Int Forum Allergy Rhinol 2017; 7:615-623. [PMID: 28383199 DOI: 10.1002/alr.21927] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 01/22/2017] [Accepted: 01/24/2017] [Indexed: 12/14/2022]
Abstract
BACKGROUND The conventional treatment for idiopathic intracranial hypertension involves weight loss, steroids, diuretics, and/or serial lumbar punctures; however, if the symptoms persist or worsen, surgical intervention is recommended. Surgical options include cerebrospinal fluid diversion procedures, such as ventriculoperitoneal and lumboperitoneal shunts, and optic nerve decompression with nerve sheath fenestration. The latter can be carried out using an endoscopic approach, but the outcomes of this technique have not been firmly established. METHODS This systematic review examined the outcomes of performing endoscopic optic nerve decompression (EOND) in patients with idiopathic intracranial hypertension (IIH). Six studies were included for a total of 34 patients. RESULTS The patients presented with visual field disturbances (32 of 32 [100%]), visual acuity disruptions (33 of 34 [97.1%]), papilledema (26 of 34 [76.5%]), and persistent headache (30 of 33 [90.1%]). The mean duration of symptoms ranged from 7 to 32 months. Overall, the patients showed post-EOND improvement in signs and symptoms associated with IIH, specifically visual field deficits (93.8%), visual acuity (85.3%), papilledema (81.4%), and headaches (81.8%). Interestingly, 11 cases showed postoperative improvement in their symptoms with bony decompression of the optic canal alone, without nerve sheath fenestration. There were no major adverse events or complications reported with this approach. CONCLUSION EOND appears to be a promising and safe surgical alternative for patients with IIH who fail to respond to medical treatment. Further studies are needed before we can attest to the clinical validity of this procedure.
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Affiliation(s)
- Luisam Tarrats
- Department of Otolaryngology Head & Neck Surgery, Medical Sciences Campus, University of Puerto Rico, San Juan, Puerto Rico
| | - Gabriel Hernández
- Department of Otolaryngology Head & Neck Surgery, Medical Sciences Campus, University of Puerto Rico, San Juan, Puerto Rico
| | - José M Busquets
- Department of Otolaryngology Head & Neck Surgery, Medical Sciences Campus, University of Puerto Rico, San Juan, Puerto Rico
| | - Juan C Portela
- Department of Otolaryngology Head & Neck Surgery, Medical Sciences Campus, University of Puerto Rico, San Juan, Puerto Rico
| | - Luis A Serrano
- Department of Ophthalmology, Medical Sciences Campus, University of Puerto Rico, San Juan, Puerto Rico
| | | | - José R Sánchez-Pérez
- Department of Otolaryngology Head & Neck Surgery, Medical Sciences Campus, University of Puerto Rico, San Juan, Puerto Rico
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Di Somma A, Cavallo LM, de Notaris M, Solari D, Topczewski TE, Bernal-Sprekelsen M, Enseñat J, Prats-Galino A, Cappabianca P. Endoscopic endonasal medial-to-lateral and transorbital lateral-to-medial optic nerve decompression: an anatomical study with surgical implications. J Neurosurg 2016; 127:199-208. [PMID: 27791520 DOI: 10.3171/2016.8.jns16566] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
OBJECTIVE Different surgical routes have been used over the years to achieve adequate decompression of the optic nerve in its canal including, more recently, endoscopic approaches performed either through the endonasal corridor or the transorbital one. The present study aimed to detail and quantify the amount of bone removal around the optic canal, achievable via medial-to-lateral endonasal and lateral-to-medial transorbital endoscopic trajectories. METHODS Five human cadaveric heads (10 sides) were dissected at the Laboratory of Surgical Neuroanatomy of the University of Barcelona (Spain). The laboratory rehearsals were run as follows: 1) preliminary preoperative CT scans of each specimen, 2) anatomical endoscopic endonasal and transorbital dissections and Dextroscope-based morphometric analysis, and 3) quantitative analysis of optic canal bone removal for both endonasal and transorbital endoscopic approaches. RESULTS The endoscopic endonasal route permitted exposure and removal of the most inferomedial portion of the optic canal (an average of 168°), whereas the transorbital pathway allowed good control of its superolateral part (an average of 192°). Considering the total circumference of the optic canal (360°), the transorbital route enabled removal of a mean of 53.3% of bone, mainly the superolateral portion. The endonasal approach provided bone removal of a mean of 46.7% of the inferomedial aspect. This result was found to be statistically significant (p < 0.05). The morphometric analysis performed with the aid of the Dextroscope (a virtual reality environment) showed that the simulation of the transorbital trajectory may provide a shorter surgical corridor with a wider angle of approach (39.6 mm; 46.8°) compared with the simulation of the endonasal pathway (52.9 mm; 23.8°). CONCLUSIONS Used together, these 2 endoscopic surgical paths (endonasal and transorbital) may allow a 360° decompression of the optic nerve. To the best of the authors' knowledge, this is the first anatomical study on transorbital optic nerve decompression to show its feasibility. Further studies and, eventually, surgical case series are mandatory to confirm the effectiveness of these approaches, thereby refining the proper indications for each of them.
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Affiliation(s)
- Alberto Di Somma
- Division of Neurosurgery, Department of Neurosciences, Reproductive and Odontostomatological Sciences, Università degli Studi di Napoli Federico II, Naples
| | - Luigi Maria Cavallo
- Division of Neurosurgery, Department of Neurosciences, Reproductive and Odontostomatological Sciences, Università degli Studi di Napoli Federico II, Naples
| | - Matteo de Notaris
- Department of Neuroscience, G. Rummo Hospital, Neurosurgery Operative Unit, Benevento, Italy
| | - Domenico Solari
- Division of Neurosurgery, Department of Neurosciences, Reproductive and Odontostomatological Sciences, Università degli Studi di Napoli Federico II, Naples
| | | | - Manuel Bernal-Sprekelsen
- Rhinology and Skull Base Unit, Department of Otorhinolaryngology, Hospital Clínic de Barcelona; and
| | - Joaquim Enseñat
- Department of Neurosurgery, Hospital Clinic, Faculty of Medicine
| | - Alberto Prats-Galino
- Laboratory of Surgical Neuroanatomy, Faculty of Medicine, Universitat de Barcelona, Spain
| | - Paolo Cappabianca
- Division of Neurosurgery, Department of Neurosciences, Reproductive and Odontostomatological Sciences, Università degli Studi di Napoli Federico II, Naples
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