scholarly journals Intraoperative use of heads-up display in skull base surgery

2022 ◽  
Vol 6 (1) ◽  
pp. V2
Keyword(s):  
Virtual Reality ◽  
Skull Base ◽  
Skull Base Surgery ◽  
Tumor Resection ◽  
Neurological Deficits ◽  
Neurophysiological Monitoring ◽  
Subtotal Resection ◽  
Reduce Blood Loss ◽  
Tumor Embolization ◽  
Anterior Choroidal

In this video, the authors highlight the applications of virtual reality and heads-up display in skull base surgery by presenting the case of a 45-year-old woman with an incidental large clinoid meningioma extending into the posterior fossa. The patient underwent preoperative endovascular tumor embolization to facilitate tumor resection and reduce blood loss, followed by a right pterional craniotomy. The use of intraoperative Doppler, intraoperative neurophysiological monitoring, and endoscope-assisted microsurgery is also featured. A subtotal resection was planned given tumor encasement of the posterior communicating and anterior choroidal arteries. No new neurological deficits were noted after the surgical procedure. The video can be found here: https://stream.cadmore.media/r10.3171/2021.10.FOCVID21177

Somatosensory Evoked Potential Monitoring During Endoscopic Endonasal Approach to Skull Base Surgery: Analysis of Observed Changes

2011 ◽  
Vol 69 (suppl_1) ◽  
pp. ons64-ons76 ◽  
Author(s):  
Parthasarathy D Thirumala ◽  
Amin B. Kassasm ◽  
Miguel Habeych ◽  
Kelley Wichman ◽  
Yue-Fang Chang ◽  
...  
Keyword(s):  
Evoked Potentials ◽  
Skull Base ◽  
Skull Base Surgery ◽  
Cranial Nerves ◽  
Neurological Deficits ◽  
Intraoperative Neurophysiological Monitoring ◽  
Neurophysiological Monitoring ◽  
Endonasal Approach ◽  
Invasive Approach ◽  
Neurovascular Structures

Abstract BACKGROUND: Intraoperative neurophysiological monitoring, including upper- and lower-extremity somatosensory evoked potentials (SSEPs), has been used to identify and prevent injury to neurovascular structures during conventional skull base surgery. The expanded endonasal approach (EEA) is a novel minimally invasive approach to skull base surgery. However, it carries the risk of injury to neurovascular structures, including the internal carotid artery, anterior cerebral artery, and cranial nerves. OBJECTIVE: To evaluate the value of SSEP monitoring to predict and/or prevent neurovascular deficits during EEA to skull base surgery. METHODS: We retrospectively identified 999 consecutive patients who had intraoperative neurophysiological monitoring during EEA skull base surgery at our institution. A total of 976 patients had SSEP monitoring and a documented postoperative neurological examination. RESULTS: The incidence of changes in SSEP during the procedure was 20 of 976 (2%). The incidence of new postoperative neurological deficits was 5 of 976 (0.5%). The positive and negative predictive values of SSEPs during EEA to predict neurovascular deficits were 80.00% and 99.79%, respectively. CONCLUSION: Intraoperative SSEP monitoring was able to identify impending risk to neurovascular structures to prevent permanent postoperative neurological deficits. We advocate a comprehensive approach to neurophysiological monitoring during EEAs, including SSEPs, spontaneous and triggered electromyography of the cranial nerves III through XII, brainstem auditory evoked potentials, and electroencephalogram, depending on the surgical approach and location of the neural structures at risk.

scholarly journals Preservation of nasal turbinates in endoscopic, anterior skull base surgery—yes, we can!

2021 ◽  
Author(s):  
Axel Wolf ◽  
Alexandros Andrianakis ◽  
Peter Valentin Tomazic ◽  
Michael Mokry ◽  
Georg Clarici ◽  
...  
Keyword(s):  
Skull Base ◽  
Skull Base Surgery ◽  
Tumor Resection ◽  
Tumor Location ◽  
Anterior Skull Base ◽  
Tumor Diameter ◽  
Tumor Type ◽  
Preoperative Information ◽  
Medical University ◽  
Significant Factors

Abstract Objective To evaluate the frequency, type and indications of nasal turbinate (NT) resection during endoscopic, anterior skull base surgery and to analyze factors that may have an impact on the need of NT removal. Methods In this retrospective cohort study, 306 subjects (150 males and 156 females, mean age 55.4 ± 15.3 years) who underwent multidisciplinary, transnasal, endoscopic tumor surgery of the anterior skull base using 4-handed techniques between 2011 and 2019 at the Department of Otorhinolaryngology, Medical University of Graz, were included. Results In the majority of interventions (n = 281/306; 91.8%), all NT were preserved. Significant factors influencing the need of NT resections turned out to be type of endoscopic approach (p < 0.001; V = 0.304), sagittal (p = 0.003; d = 0.481) and transversal (p = 0.017; d = 0.533) tumor diameter, tumor type (p < 0.001; V = 0.355) and tumor location (p < 0.001; V = 0.324). Conclusions NT can be preserved in the majority of patients undergoing tumor resection in anterior, transnasal, skullbase surgery and routine resection of NT should be avoided. Variables that have an impact on the need of NT resections are types of endoscopic approaches, sagittal and transversal tumor extension and tumor type. These factors should be considered in planning of surgery and preoperative information of patients.

Retrosigmoid intradural suprameatal approach to Meckel's cave and the middle fossa: surgical technique and outcome

2000 ◽  
Vol 92 (2) ◽  
pp. 235-241 ◽  
Author(s):  
Madjid Samii ◽  
Marcos Tatagiba ◽  
Gustavo A. Carvalho
Keyword(s):  
Tumor Resection ◽  
Neurological Deficits ◽  
Subtotal Resection ◽  
Middle Fossa ◽  
Meckel’S Cave ◽  
Content Type ◽  
Simpson Grade ◽  
Petroclival Meningiomas ◽  
Meckel's Cave ◽  
Fine Print

Object. The goal of this study was to determine whether some petroclival tumors can be safely and efficiently treated using a modified retrosigmoid petrosal approach that is called the retrosigmoid intradural suprameatal approach (RISA).Methods. The RISA was introduced in 1983, and since that time 12 patients harboring petroclival meningiomas have been treated using this technique. The RISA includes a retrosigmoid craniotomy and drilling of the suprameatus petrous bone, which is located above and anterior to the internal auditory meatus, thus providing access to Meckel's cave and the middle fossa.Radical tumor resection (Simpson Grade I or II) was achieved in nine (75%) of the 12 patients. Two patients underwent subtotal resection (Simpson Grade III), and one patient underwent complete resection of tumor at the posterior fossa with subtotal resection at the middle fossa. There were no deaths or severe complications in this series; all patients did well postoperatively, being independent at the time of their last follow-up examinations (mean 5.6 years). Neurological deficits included facial paresis in one patient and worsening of hearing in two patients.Conclusions. Theapproach described here is a useful modification of the retrosigmoid approach, which allows resection of large petroclival tumors without the need for supratentorial craniotomies. Although technically meticulous, this approach is not time-consuming; it is safe and can produce good results. This is the first report on the use of this approach for petroclival meningiomas.

Extended orbital exenteration for sinonasal malignancy with orbital apex extension: surgical technique and clinical analysis

2015 ◽  
Vol 123 (1) ◽  
pp. 52-58 ◽  
Author(s):  
Takashi Sugawara ◽  
Masaru Aoyagi ◽  
Takahiro Ogishima ◽  
Yoshihisa Kawano ◽  
Masashi Tamaki ◽  
...  
Keyword(s):  
Cell Carcinoma ◽  
Skull Base ◽  
Perioperative Complications ◽  
Tumor Resection ◽  
Neurological Deficits ◽  
Orbital Exenteration ◽  
Orbital Apex ◽  
Orbital Cavity ◽  
Sinonasal Malignancy ◽  
Sinonasal Malignancies

OBJECT The majority of sinonasal malignancies present with advanced disease, and cure rates are generally poor. Surgical extirpation remains the mainstay of treatment. In cases of sinonasal malignancy with orbital apex extension, gross-total tumor resection requires orbital exenteration and bony skull base resection around the orbital apex to provide sufficient margins. In this retrospective study, the authors describe their surgical strategy in and technique for orbital exenteration with orbital apex resection in patients at Tokyo Medical and Dental University who had sinonasal malignancy with orbital apex extension. They also analyzed the clinical features of and the results in these patients. METHODS Between February 2001 and August 2012 at the authors' institution, sinonasal malignancy with orbital apex extension was treated using craniofacial tumor resection with orbital exenteration including skull base bone around the orbital apex. The authors describe this technique and analyze the surgical indications, extent of resection, primary tumor location, outcome, pathological findings, and neoadjuvant and adjuvant therapies of the patients who underwent the technique. RESULTS The patients consisted of 12 men and 3 women with a mean age of 47.7 years (range 14–79 years). The longest postoperative follow-up was 9.5 years, and the shortest was 0.67 year (mean 3.0 years). Tumor originated at the ethmoid sinus in 6 patients (40%), maxillary sinus in 5 (33%), nasal cavity in 2 (13%), and orbital cavity and maxillary bone in 1 patient each (7%). Histological analysis of tumor specimens revealed squamous cell carcinoma in 9 patients (60%), rhabdomyosarcoma in 2 (13%), and small cell carcinoma, mucoepidermoid carcinoma, adenoid cystic carcinoma, and Ewing sarcoma in 1 patient each (7%). Two patients experienced recurrences at 1 and 5 months after treatment; these patients died at 5 and 10 months after surgery, respectively. Estimated 5-year recurrence-free survival (RFS) was 86.7%, and estimated 5-year overall survival (OS) was 86.2%; there was no perioperative mortality. None of the patients had new neurological deficits as a result of the surgery, but 5 patients suffered infectious complications from the graft transplanted into the cavity after resection. There were no other perioperative complications. CONCLUSIONS These authors are the first to describe a technique for extended orbital exenteration with orbital apex skull base resection. The technique provided sufficient margins for gross-total resection of the sinonasal malignancy with orbital apex extension. The estimated 5-year OS and RFS rates were high, and the perioperative complication rate was acceptably low, demonstrating the safety and efficacy of this technique.

Transtemporal Skull Base Surgery

1995 ◽  
Vol 112 (5) ◽  
pp. P119-P119
Author(s):  
C. Gary Jackson ◽  
James L. Netterville
Keyword(s):  
Functional Outcome ◽  
Skull Base ◽  
Cranial Nerve ◽  
Skull Base Surgery ◽  
Tumor Resection ◽  
Operative Management ◽  
Educational Objectives ◽  
Defect Reconstruction ◽  
Lateral Skull Base

Educational objectives: To become familiar with diagnostic and operative management principles for lateral skull-base disease and its ICE, emphasizing not only multi-disciplinary tumor resection but functional outcome and to be familiar with concepts of defect reconstruction and cranial nerve rehabilitation that maximize postresection functional outcome.

scholarly journals Surgery in tumors of the lateral ventricles – last 8 years experience

2014 ◽  
Vol 21 (1) ◽  
pp. 61-73
Author(s):  
Mugurel Radoi ◽  
Leon Danaila ◽  
Florin Stefanescu ◽  
Daniel Petrescu ◽  
Ram Vakilnejad
Keyword(s):  
Lateral Ventricle ◽  
Clinical Symptoms ◽  
Postoperative Radiotherapy ◽  
Tumor Resection ◽  
Choroid Plexus Papilloma ◽  
Neurological Deficits ◽  
Subtotal Resection ◽  
Transcallosal Approach ◽  
Ventriculoperitoneal Shunting ◽  
Transcortical Approach

Abstract Introduction: Tumors of the lateral ventricle are rare lesions including a large variety of benign or malignant tumors. These tumors could originate in the ventricular wall or arising and expanding within the lateral ventricle from the surrounding neural structures. The purpose of this study is to discuss postoperative results and factors that affected the preference for transcallosal or transcortical approach. Material and methods : We performed a retrospective study, lasted between 2005- 2013, that comprised 26 consecutive patients who underwent operation for lateral ventricle tumors. The main clinical symptoms and signs were associated with the localization and size of the tumors. Cerebral computed tomography and magnetic resonance imaging were used to determine the location and expansion of each tumor. The transcortical approach was used in 17 patients and the transcallosal approach was used in 9 patients. Results : Total tumor resection was achieved in 73% of cases (19 patients). Most frequent histological tumor’s type was glioblastoma, choroid plexus papilloma, ependymoma and meningioma. Signs of increased intracranial pressure were most dominant. One patient died because of postoperative intraventricular hemorrhage. Additional neurological deficits were seen in 3 patients and postoperative seizure occurred in three patients. One patient with preoperative hydrocephalus required ventriculoperitoneal shunting after tumor’s resection. Two patients developed postoperative epidural hematoma and one required reoperation. 15 of 26 patients received postoperative radiotherapy and 6 of them received adjuvant chemotherapy. The mean duration of postoperative evaluation was 24,32 (range 5-92). Excepting the cases with subtotal resection, two patients were reoperated for recurrences. Conclusions : The nature, size, location and vascularization of intraventricular tumors are the most important elements influencing the choice of surgical approach. Surgeons must evaluate all these factors and prefer the short and safe way to remove the tumor.

scholarly journals Retrosigmoid intradural suprameatal approach to Meckel's cave and the middle fossa: surgical technique and outcome

1999 ◽  
Vol 7 (6) ◽  
pp. E1
Author(s):  
Madjid Samii ◽  
Marcos Tatagiba ◽  
Gustavo A. Carvalho
Keyword(s):  
Tumor Resection ◽  
Petrous Bone ◽  
Neurological Deficits ◽  
Subtotal Resection ◽  
Middle Fossa ◽  
Meckel’S Cave ◽  
Simpson Grade ◽  
Petroclival Meningiomas ◽  
Meckel's Cave

Object The goal of this study was to determine whether some petroclival tumors can be safely and efficiently treated using a modified retrosigmoid petrosal approach that is called the retrosigmoid intradural suprameatal approach (RISA). Methods The RISA was introduced in 1983, and since that time 12 patients harboring petroclival meningiomas have been treated using this technique. The RISA includes a retrosigmoid craniotomy and drilling of the suprameatus petrous bone, which is located above and anterior to the internal auditory meatus, thus providing access to Meckel's cave and the middle fossa. Radical tumor resection (Simpson Grade I or II) was achieved in nine (75%) of the 12 patients. Two patients underwent subtotal resection (Simpson Grade III), and one patient underwent complete resection of tumor at the posterior fossa with subtotal resection at the middle fossa. There were no deaths or severe complications in this series; all patients did well postoperatively, being independent at the time of their last follow-up examinations (mean 5.6 years). Neurological deficits included facial paresis in one patient and worsening of hearing in two patients. Conclusions The approach described here is a useful modification of the retrosigmoid approach, which allows resection of large petroclival tumors without the need for supratentorial craniotomies. Although technically meticulous, this approach is not time consuming; it is safe and can produce good results. This is the first report on the use of this approach for petroclival meningiomas.

scholarly journals Endoscopic transsphenoidal resection of craniopharyngioma

2021 ◽  
Vol 50 (2) ◽  
pp. 152
Author(s):  
Esmaralda Nurul Amany
Keyword(s):  
Skull Base ◽  
Endoscopic Surgery ◽  
Skull Base Surgery ◽  
Tumor Resection ◽  
Endoscopic Approach ◽  
Cochrane Library ◽  
Morbidity Rate ◽  
Literature Study ◽  
Endoscopic Skull Base Surgery ◽  
Microscopic Surgery

ABSTRACTBackground: Endoscopic surgery techniques had been advancing in this last two decades. Transsphenoidal approach endoscopic surgery to the skull base provides better visualization of the operation field compared to microscopic surgery, and also brought lower morbidity than other techniques. Purpose: To report a transsphenoidal endoscopic skull base surgery for craniopharyngioma resection. Case Report: A case of craniopharyngioma in a 47-year-old man. The tumor resection was performed with transsphenoidal endoscopic approach, in collaboration with a neurosurgeon. Clinical Question: Is transsphenoidal endoscopic skull base surgery approach, the appropriate surgical procedure for craniopharyngioma management? Review Method: Evidence based literature study of skull base surgery with transsphenoidal endoscopic approach in craniopharyngioma through database Cochrane library, Pubmed Medline, and hand searching. Result: Skull base surgery with transsphenoidal endoscopic approach was minimally invasive with maximally invasion compared to transcranial surgery, and  also provided better view, and could reduce complication rate. Conclusion: Skull base surgery with transsphenoidal endoscopic approach offers more advantage in skull base lesion management compared to other techniques. Collaboration between neurosurgeon and otorhinolaryngologist using this technique could reduce complication and morbidity rate.  ABSTRAKLatar belakang: Teknik operasi endoskopi mengalami perkembangan pesat dalam dua dekade terakhir. Bedah basis kranii dengan pendekatan endoskopi transfenoid memberikan kualitas visualisasi lapang pandang operasi lebih baik dibanding menggunakan mikroskop, dan juga mengakibatkan morbiditas lebih rendah dibanding teknik lainnya. Tujuan: Melaporkan keberhasilan bedah basis kranii dengan pendekatan endoskopi transfenoid pada kraniofaringioma. Laporan kasus: Seorang laki-laki 47 tahun dengan diagnosis kraniofaringioma yang dilakukan tindakan reseksi tumor dengan pendekatan endoskopi transfenoid berkolaborasi dengan ahli bedah saraf. Pertanyaan Klinis: Apakah bedah basis kranii dengan pendekatan endoskopi transfenoid merupakan teknik operasi yang tepat untuk tatalaksana kraniofaringioma? Telaah literatur: Telaah literatur berbasis bukti mengenai bedah basis kranii dengan pendekatan endoskopi transfenoid pada kraniofaringioma melalui database Cochrane library, Pubmed Medline, dan pencarian manual. Hasil: Bedah basis kranii dengan pendekatan endoskopi transfenoid memberikan akses minimal dengan invasi maksimal, visualisasi lebih baik, dan dapat menurunkan angka komplikasi. Kesimpulan: Bedah basis kranii dengan pendekatan endoskopi transfenoid merupakan teknik operasi lesi basis kranii yang lebih unggul dibandingkan teknik lainnya. Kolaborasi antara ahli bedah saraf dan THT dapat mengurangi angka komplikasi dan morbiditas tindakan ini.

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