scholarly journals Fascial sling technique for dural reconstruction after translabyrinthine resection of acoustic neuroma: technical note

2012 ◽  
Vol 33 (3) ◽  
pp. E17 ◽  
Author(s):  
James K. Liu ◽  
Smruti K. Patel ◽  
Amanda J. Podolski ◽  
Robert W. Jyung
Keyword(s):  
Technical Note ◽  
Fascia Lata ◽  
Fat Graft ◽  
Reconstruction Technique ◽  
Dural Defect ◽  
Translabyrinthine Approach ◽  
Acoustic Neuromas ◽  
Fascial Sling ◽  
Csf Leakage ◽  
Dural Defects

Reconstruction of presigmoid dural defects after resection of acoustic neuromas via the translabyrinthine approach is paramount to prevent postoperative CSF leakage. However, primary dural reapproximation and achieving a watertight closure of the dural defect in this anatomical region are quite difficult. Standard closure techniques after the translabyrinthine approach often involve packing an abdominal fat graft that plugs the dural defect and mastoidectomy cavity. This technique, however, may pose the risk of direct compression of the fat graft on the facial nerve and brainstem. Nonetheless, even with the evolution in dural repair techniques, postoperative CSF leaks can still occur and provide a route for infection and meningitis. In this report, the authors describe a novel dural “sling” reconstruction technique using autologous fascia lata to repair presigmoid dural defects created after translabyrinthine resection of acoustic neuromas. The fascia lata is sewn to the edges of the presigmoid dural defect to create a sling to suspend the fat graft within the mastoidectomy defect. A titanium mesh plate embedded in porous polyethylene is secured over the mastoidectomy defect to apply pressure to the fat graft. In the authors' experience, this has been a successful technique for dural reconstruction after translabyrinthine removal of acoustic neuromas to prevent postoperative CSF leakage. There were no cases of CSF leakage in the first 8 patients treated using this technique. The operative details and preliminary results of this technique are presented.

scholarly journals Retractorless translabyrinthine approach for resection of a large acoustic neuroma: operative video and technical nuances

2014 ◽  
Vol 36 (v1supplement) ◽  
pp. 1 ◽  
Author(s):  
James K. Liu ◽  
Robert W. Jyung
Keyword(s):  
Facial Nerve ◽  
Acoustic Neuroma ◽  
Tumor Resection ◽  
Fat Graft ◽  
Cerebrospinal Fluid Leakage ◽  
Dural Defect ◽  
Nerve Preservation ◽  
Facial Nerve Preservation ◽  
Translabyrinthine Approach ◽  
Acoustic Neuromas

Large acoustic neuromas, greater than 3 cm, can be technically challenging tumors to remove because of their intimate relationship with the brainstem and surrounding cranial nerves. Successful tumor resection involves functional preservation of the facial nerve and neurovascular structures. The translabyrinthine approach is useful for surgical resection of acoustic neuromas of various sizes in patients with poor preoperative hearing. The presigmoid surgical corridor allows direct exposure of the tumor in the cerebellopontine angle without any fixed cerebellar retraction. Early identification of the facial nerve at the fundus facilitates facial nerve preservation. Large acoustic tumors can be readily removed with a retractorless translabyrinthine approach using dynamic mobilization of the sigmoid sinus. In this operative video atlas report, the authors demonstrate their operative nuances for resection of a large acoustic neuroma via a translabyrinthine approach using a retractorless technique. Facial nerve preservation is achieved by maintaining a plane of dissection between the tumor capsule and the tumor arachnoid so that a layer of arachnoid protects the blood supply to the facial nerve. Multilayered closure is achieved with a fascial sling technique in which an autologous fascia lata graft is sutured to the dural defect to suspend the fat graft in the mastoidectomy defect. We describe the step-by-step technique and illustrate the operative nuances and surgical pearls to safely and efficiently perform the retractorless translabyrinthine approach, tumor resection, facial nerve preservation, and multi-layered reconstruction of the skull base dural defect to prevent postoperative cerebrospinal fluid leakage.The video can be found here: http://youtu.be/ros98UxqVMw.

scholarly journals Spinal endoscopy combined with selective CT myelography for dural closure of the spinal dural defect with superficial siderosis: technical note

2018 ◽  
Vol 28 (1) ◽  
pp. 96-102 ◽  
Author(s):  
Hidetaka Arishima ◽  
Yoshifumi Higashino ◽  
Shinsuke Yamada ◽  
Ayumi Akazawa ◽  
Hiroshi Arai ◽  
...  
Keyword(s):  
Endoscopic Examination ◽  
Technical Note ◽  
Drainage Tube ◽  
Superficial Siderosis ◽  
Dural Defect ◽  
Ct Myelography ◽  
Dural Closure ◽  
Spinal Subarachnoid Space ◽  
Csf Leakage ◽  
Dural Defects

The authors describe a new procedure to detect the tiny dural hole in patients with superficial siderosis (SS) and CSF leakage using a coronary angioscope system for spinal endoscopy and selective CT myelography using a spinal drainage tube. Under fluoroscopy, surgeons inserted the coronary angioscope into the spinal subarachnoid space, similar to the procedure of spinal drainage, and slowly advanced it to the cervical spine. The angioscope clearly showed the small dural hole and injured arachnoid membrane. One week later, the spinal drainage tube was inserted, and the tip of the drainage tube was located just below the level of the dural defect found by the spinal endoscopic examination. This selective CT myelography clarifies the location of the dural defect. During surgery, the small dural hole could be easily located, and it was securely sutured. It is sometimes difficult to detect the actual location of the small dural hole even with thin-slice MRI or dynamic CT myelography in patients with SS. The use of a coronary angioscope for the spinal endoscopy combined with selective CT myelography may provide an effective examination to assess dural closure of the spinal dural defect with SS in cases without obvious dural defects on conventional imaging.

Surgical nuances for nasoseptal flap reconstruction of cranial base defects with high-flow cerebrospinal fluid leaks after endoscopic skull base surgery

2012 ◽  
Vol 32 (6) ◽  
pp. E7 ◽  
Author(s):  
James K. Liu ◽  
Richard F. Schmidt ◽  
Osamah J. Choudhry ◽  
Pratik A. Shukla ◽  
Jean Anderson Eloy
Keyword(s):  
Skull Base ◽  
Skull Base Surgery ◽  
Cranial Base ◽  
High Flow ◽  
Csf Leak ◽  
Reconstruction Technique ◽  
Dural Defect ◽  
Nasoseptal Flap ◽  
Endoscopic Skull Base Surgery ◽  
Csf Leakage

Extended endoscopic endonasal approaches have allowed for a minimally invasive solution for removal of a variety of ventral skull base lesions, including intradural tumors. Depending on the location of the pathological entity, various types of surgical corridors are used, such as transcribriform, transplanum transtuberculum, transsellar, transclival, and transodontoid approaches. Often, a large skull base dural defect with a high-flow CSF leak is created after endoscopic skull base surgery. Successful reconstruction of the cranial base defect is paramount to separate the intracranial contents from the paranasal sinus contents and to prevent postoperative CSF leakage. The vascularized pedicled nasoseptal flap (PNSF) has become the workhorse for cranial base reconstruction after endoscopic skull base surgery, dramatically reducing the rate of postoperative CSF leakage since its implementation. In this report, the authors review the surgical technique and describe the operative nuances and lessons learned for successful multilayered PNSF reconstruction of cranial base defects with high-flow CSF leaks created after endoscopic skull base surgery. The authors specifically highlight important surgical pearls that are critical for successful PNSF reconstruction, including target-specific flap design and harvesting, pedicle preservation, preparation of bony defect and graft site to optimize flap adherence, multilayered closure technique, maximization of the reach of the flap, final flap positioning, and proper bolstering and buttressing of the PNSF to prevent flap dehiscence. Using this technique in 93 patients, the authors' overall postoperative CSF leak rate was 3.2%. An illustrative intraoperative video demonstrating the reconstruction technique is also presented.

scholarly journals Management of cerebrospinal fluid leak after surgical removal of pituitary adenomas

Medicina ◽  
2008 ◽  
Vol 44 (4) ◽  
pp. 302 ◽  
Author(s):  
Arimantas Tamašauskas ◽  
Kęstutis Šinkūnas ◽  
Wolfgang Draf ◽  
Vytenis Deltuva ◽  
Algimantas Matukevičius ◽  
...  
Keyword(s):  
Cerebrospinal Fluid ◽  
Sella Turcica ◽  
Cerebrospinal Fluid Leak ◽  
Surgical Removal ◽  
Dural Defect ◽  
Sphenoidal Sinus ◽  
Autologous Fat ◽  
Csf Leakage ◽  
Dural Defects ◽  
Fluid Leak

Objectives. The aim of the study was to evaluate the frequency and the causes of the intra- and postoperative cerebrospinal fluid (CSF) leaks and to discuss the sella closure methods. Methods. During the period from 1995 to 2005, 313 patients underwent 356 transsphenoidal operations for pituitary adenoma. Microadenoma was found in 80 (22.5%) cases, and in 276 (77.5%) cases, macroadenoma was removed. Two different methods to close the sella were used. The first one consisted packing the sella turcica and sphenoidal sinus with autologous fat and restoring the defect of sella turcica with autologous bone. In more resent practice, the regenerated oxidized cellulose (Surgicel®) and collagen sponge with human fibrin (TachoSil®) were used to cover the sella membrane defect, followed by packing the sella with autologous fat and covering the dural defect with Surgicel® and TachoSil®. Results. Adenoma was totally removed in 198 (55.6%) cases out of 356. Microadenoma was totally removed in 91.3% and macroadenoma in 45.3% of cases, respectively. Postoperative complications were noted in 40 (11.2%) patients. Two (0.6%) patients died after surgery. Intraoperative CSF leakage was observed in 58 (16.3%) cases. Postoperative CSF leakages were observed in 3 cases, when the method of packing the sella with just autologous fat was used, whereas in 29 cases when the sella fat packing was used together with Surgicel® and TachoSil® to cover the sella membrane and dural defects, no postoperative CSF leakages were observed. Conclusions. The technique of covering the sella membrane and dural defects with Surgicel® and TachoSil® in the presence of intraoperative CSF leakage appeared to be the most reliable one, as no postoperative CSF leakage applying this technique has been observed.

Subdural Patch Graft Technique for Watertight Closure of Large Dural Defects in Extended Transsphenoidal Surgery

Neurosurgery ◽  
2004 ◽  
Vol 54 (3) ◽  
pp. 653-661 ◽  
Author(s):  
Masahiko Kitano ◽  
Mamoru Taneda
Keyword(s):  
Double Layer ◽  
Cranial Base ◽  
Dural Defect ◽  
Csf Rhinorrhea ◽  
Group Iii ◽  
Group I ◽  
Csf Leakage ◽  
Patch Graft ◽  
Group Ii ◽  
Dural Defects

Abstract OBJECTIVE The most common postoperative complication of the transsphenoidal approach is cerebrospinal fluid (CSF) rhinorrhea. If the dura is widely opened beyond the sellar floor and massive intraoperative CSF leakage is encountered, then the conventional packing method, in which the sella turcica is filled with pieces of fat or muscle, demonstrates a relatively high incidence of CSF rhinorrhea. For more reliable prevention of postoperative CSF leakage, we developed a method for watertight closure of large dural defects. METHODS For 34 consecutive patients with suprasellar tumors, we performed tumor resection via an extended transsphenoidal approach, in which the surgical window in the sellar floor was extended to the planum sphenoidale to expose the suprasellar cistern. The patients were retrospectively divided into three groups according to the dural defect closure technique used. Group I consisted of the first two patients, whose large dural openings were closed with a conventional fat-packing method. Group II consisted of the next 10 patients, whose large dural defects were patched with fascia and sutured with 5-0 nylon, in a watertight manner. Group III consisted of the last 22 patients, who underwent watertight dural closure with a new knot-tying technique and a double-layer patch graft, which generously covered the dural defect of the cranial base with subdural placement. In Group III, intracranial CSF compressed the patch graft against the cranial base and sealed the gap between the patch graft and the cranial base in a watertight manner. The double-layer patch graft was composed of autologous fascial membrane and a commercially available, expanded polytetrafluoroethylene dural substitute. RESULTS Postoperative CSF leakage was noted for 50% of the patients in Group I, 30% of the patients in Group II, and 9% of the patients in Group III. The time required for dural closure for Group III was approximately 50% shorter than that required for Group II (45.9 ± 12.4 min versus 93.5 ± 19.1 min, P < 0.001). CONCLUSION The subdural double-layer patch graft technique is simple and reliable for the prevention of CSF rhinorrhea after transsphenoidal surgery associated with a widely opened dura.

Dural closure for the treatment of superficial siderosis

2013 ◽  
Vol 18 (4) ◽  
pp. 388-393 ◽  
Author(s):  
Satoru Egawa ◽  
Toshitaka Yoshii ◽  
Kyohei Sakaki ◽  
Hiroyuki Inose ◽  
Tsuyoshi Kato ◽  
...  
Keyword(s):  
Present Report ◽  
Fluid Collection ◽  
Clinical Manifestations ◽  
Fat Grafting ◽  
Neurological Deficits ◽  
Superficial Siderosis ◽  
Dural Defect ◽  
Dural Closure ◽  
Csf Leakage ◽  
Dural Defects

Superficial siderosis (SS) of the CNS is a rare disease caused by repeated hemorrhages in the subarachnoid space. The subsequent deposition of hemosiderin in the brain and spinal cord leads to the progression of neurological deficits. The causes of bleeding include prior intradural surgery, carcinoma, arteriovenous malformation, nerve root avulsion, and dural abnormality. Recently, surgical treatment of SS associated with dural defect has been reported. The authors of the present report describe 2 surgically treated SS cases and review the literature on surgically treated SS. The patients had dural defects with fluid-filled collections in the spinal canal. In both cases, the dural defects were successfully closed, and the fluid collection was resolved postoperatively. In one case, the neurological symptoms did not progress postoperatively. In the other case, the patient had long history of SS, and the clinical manifestations partially deteriorated after surgery, despite the successful dural closure. In previously reported surgically treated cases, the dural defects were closed by sutures, patches, fibrin glue, or muscle/fat grafting. Regardless of the closing method, dural defect closure has been shown to stop CSF leakage and subarachnoid hemorrhaging. Successfully repairing the defect can halt the disease progression in most cases and may improve the symptoms that are associated with CSF hypovolemia. However, the effect of the dural closure may be limited in patients with long histories of SS because of the irreversibility of the neural tissue damage caused by hemosiderin deposition. In patients with SS, it is important to diagnose and repair the dural defect early to minimize the neurological impairments that are associated with dural defects.

scholarly journals Novel dural incision and closure procedure for preventing postoperative cerebrospinal fluid leakage during the surgical removal of dumbbell-shaped spinal tumors: technical note

2016 ◽  
Vol 25 (5) ◽  
pp. 620-625 ◽  
Author(s):  
Kiyoshi Ito ◽  
Tatsuro Aoyama ◽  
Takuya Nakamura ◽  
Yoshiki Hanaoka ◽  
Tetsuyoshi Horiuchi ◽  
...  
Keyword(s):  
Cerebrospinal Fluid ◽  
Dura Mater ◽  
Clinical Results ◽  
Technical Note ◽  
Spinal Tumors ◽  
Cerebrospinal Fluid Leakage ◽  
Surgical Removal ◽  
Dural Closure ◽  
Csf Leakage ◽  
Dural Defects

The authors report on a new method for removing dumbbell-shaped spinal tumors that avoids the risk of postoperative cerebrospinal fluid (CSF) leakage. Adequate visualization of the intra- and extradural components of the tumor is achieved with the use of separate dural incisions. First, the dura mater is opened along the dural theca to provide adequate visualization of the intradural portion of the mass; then, a second incision is made along the nerve root to remove the extradural component. Meticulous suturing is essential in intradural lesion cases; however, the dura mater is usually thin and fragile in such cases. During suturing with a needle and thread, the dura mater can become lacerated proximal to the needle holes and result in CSF leakage. In the authors' technique, instead of using a needle and thread, nonpenetrating vascular clips were used to close the dural incisions. When operating on dumbbell-shaped spinal tumors, the authors found that the “separate-dural-incision method” was preferable to the conventional T-shaped dural incision method because no dural defects occurred after the intradural procedure and meticulous dural closure with vascular clips was achieved. The authors conclude that the novel separate-dural-incision method for removing dumbbell-shaped tumors and the use of nonpenetrating vascular clips permits reliable dural closure, prevents postoperative CSF leakage, and promises good postoperative clinical results.

Hydroxyapatite Cement Cranioplasty in Translabyrinthine Acoustic Neuroma Surgery

2002 ◽  
Vol 126 (5) ◽  
pp. 512-517 ◽  
Author(s):  
Moisês A. Arriaga ◽  
Douglas A. Chen
Keyword(s):  
Acoustic Neuroma ◽  
Chart Review ◽  
Fat Graft ◽  
Wound Complications ◽  
Acoustic Neuromas ◽  
Csf Leakage ◽  
Acoustic Neuroma Surgery ◽  
Hydroxyapatite Cement ◽  
Csf Leaks

OBJECTIVES: Hydroxyapatite cement cranioplasty (HAC) after translabyrinthine resection of acoustic neuroma is a promising new technique for wound reconstruction. This study reviews the efficacy of HAC for the prevention of cerebrospinal fluid (CSF) leakage and the long-term wound outcomes of HAC versus abdominal fat graft (AFG) reconstruction. METHODS: This retrospective study of 108 consecutive acoustic neuromas operated on by Pittsburgh Ear Associates uses chart review, telephone interview, and mail questionnaire data. Fifty-four patients received AFG dural repair, and 54 patients received HAC. RESULTS: Seven AFG patients (12.5%) had CSF leaks versus 2 (3.7%) of the overall group of 54 HAC patients. However, none (0%) of the 47 HAC patients had CSF leakage with current HAC techniques. HAC also produced significantly less postauricular wound depression and superior cosmetic results in comparison with AFG. Although HAC patients experienced less postoperative discomfort, wound complications requiring medical or surgical intervention were extremely uncommon in both groups. Conclusion: HAC offers significant CSF leakage control and long-term cosmetic and comfort advantages over AFG alone. We recommend HAC as the standard closure technique for translabyrinthine acoustic neuroma surgery.

Microsurgical anatomy and treatment of dural defects in spontaneous spinal cerebrospinal fluid leaks

2020 ◽  
pp. 1-9
Author(s):  
Ako Matsuhashi ◽  
Keisuke Takai ◽  
Makoto Taniguchi
Keyword(s):  
Dura Mater ◽  
Fat Grafting ◽  
Thoracolumbar Junction ◽  
Microsurgical Anatomy ◽  
Dural Defect ◽  
Ct Myelography ◽  
Blood Patch ◽  
Neurosurgical Treatment ◽  
Dural Defects ◽  
Csf Leaks

OBJECTIVESpontaneous spinal CSF leaks are caused by abnormalities of the spinal dura mater. Although most cases are treated conservatively or with an epidural blood patch, some intractable cases require neurosurgical treatment. However, previous reports are limited to a small number of cases. Preoperative detection and localization of spinal dural defects are difficult, and surgical repair of these defects is technically challenging. The authors present the anatomical characteristics of dural defects and surgical techniques in treating spontaneous CSF leaks.METHODSAmong the consecutive patients who were diagnosed with spontaneous CSF leaks at the authors’ institution between 2010 and 2020, those who required neurosurgical treatment were included in the study. All patients’ clinical information, radiological studies, surgical notes, and outcomes were reviewed retrospectively. Outcomes of two different procedures in repairing dural defects were compared.RESULTSAmong 77 patients diagnosed with spontaneous CSF leaks, 21 patients (15 men; mean age 57 years) underwent neurosurgery. Dural defects were detected by FIESTA MRI in 7 patients, by CT myelography in 12, by digital subtraction myelography in 1, and by dynamic CT myelography in 1. The spinal levels of the defects were localized at the cervicothoracic junction in 16 patients (76%) and thoracolumbar junction in 4 (19%). Intraoperative findings revealed that the dural defects were small, circumscribed longitudinal slits located at the ventral aspect of the dura mater. The median dural defect size was 5 × 2 mm. The presence of dural defects at the thoracolumbar junction was associated with manifestation of an altered mental status, which was an unusual manifestation of CSF leaks (p = 0.003). Eight patients were treated via the posterior transdural approach with watertight primary sutures of the ventral defects, and 13 were treated with muscle or fat grafting. Regardless of the two different procedures, postoperative MRI showed either complete disappearance or significant reduction of the extradural CSF collection. No patient experienced postoperative neurological deficits. Clinical symptoms improved or stabilized in 20 patients with a median follow-up of 12 months.CONCLUSIONSDural defects in spontaneous CSF leaks were small, circumscribed longitudinal slits located ventral to the spinal cord at either the cervicothoracic or thoracolumbar junction. Muscle/fat grafting may be an alternative treatment to watertight primary sutures of ventral dural defects with a good outcome.

Translabyrinthine Approach for Acoustic Neuroma

Neurosurgery ◽  
2004 ◽  
Vol 54 (2) ◽  
pp. 391-396 ◽  
Author(s):  
John Diaz Day ◽  
Douglas A. Chen ◽  
Moises Arriaga
Keyword(s):  
Surgical Treatment ◽  
Acoustic Neuroma ◽  
Cerebellopontine Angle ◽  
Hearing Preservation ◽  
Retrosigmoid Approach ◽  
The Past ◽  
Translabyrinthine Approach ◽  
Acoustic Neuromas

Abstract THE TRANSLABYRINTHINE APPROACH has been popularized during the past 30 years for the surgical treatment of acoustic neuromas. It serves as an alternative to the retrosigmoid approach in patients when hearing preservation is not a primary consideration. Patients with a tumor of any size may be treated by the translabyrinthine approach. The corridor of access to the cerebellopontine angle is shifted anteriorly in contrast to the retrosigmoid approach, resulting in minimized retraction of the cerebellum. Successful use of the approach relies on a number of technical nuances that are outlined in this article.

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