Endoscope-Assisted Microsurgery in Petroclival Meningioma Combined with Contralateral Trigeminal Schwannoma

2014 ◽  
Vol 75 (S 02) ◽  
Author(s):  
I. Park
2011 ◽  
Vol 114 (5) ◽  
pp. 1294-1298 ◽  
Author(s):  
Ahmad Hafez ◽  
Remi Nader ◽  
Ossama Al-Mefty

Object The petrosal approach is based on sectioning the superior petrosal sinus (SPS) and the tentorium. However, the venous anatomy in certain situations forbids this maneuver. The authors have derived a technique that enables the SPS to be spared during the performance of the petrosal approach. They describe the anatomical basis of this technique and report on 2 cases in which the technique was applied. Methods Five alcohol-preserved cadaveric heads injected with colored silicone were used for bilateral dissection and demonstration of the technique. The described method was thoroughly investigated in these cadavers to assess its advantages, variabilities, and limitations. Subsequently, the technique was applied during the resection of petroclival tumors in 2 patients. Results The authors were able to demonstrate that the approach provides good access to the petroclival area through both the middle and posterior fossa in cadavers. By deriving a new technique of applying the combined petrosal approach without cutting the SPS, the senior author (O.A.M.) managed to achieve total resection of a dumbbell-shaped trigeminal schwannoma in a 19-year-old woman and of a petroclival meningioma in a 49-year-old man. Conclusions This modification of the petrosal approach involving sparing of the SPS or cutting of the tentorium is an effective means for cases in which the venous anatomy mandates preservation of these structures.


2014 ◽  
Vol 75 (S 02) ◽  
Author(s):  
Hiroshi Inoya ◽  
J. Son ◽  
Y. Ishii ◽  
A. Matsuno

2016 ◽  
Vol 77 (S 02) ◽  
Author(s):  
Matthew Carlson ◽  
Jacob Hunter ◽  
Robert Yawn ◽  
Ray Wang ◽  
Brendan O'Connell ◽  
...  

2020 ◽  
Author(s):  
Alice E. Huang ◽  
Garret W. Choby ◽  
Jacob Dey ◽  
Matthew L. Carlson ◽  
Jamie J. Van Gompel ◽  
...  

Skull Base ◽  
2011 ◽  
Vol 21 (S 01) ◽  
Author(s):  
Junting Zhang ◽  
Zhen Wu ◽  
Liwei Zhang ◽  
Guijun Jia ◽  
Jie Tang ◽  
...  

1999 ◽  
Vol 7 (1) ◽  
pp. E1 ◽  
Author(s):  
Dorothy A. Lang ◽  
Glenn Neil-Dwyer ◽  
John Garfield

Object The goals of this study were twofold: 1) to determine outcome, including quality of life, in patients who have undergone surgery for petroclival meningioma in which a standard skull base approach was used; and 2) to assess the impact of the patients' surgical treatment on their caregivers. Methods Seventeen patients (13 women and four men ranging in age from 29 to 63 years) who underwent a transpetrosal approach for a petroclival meningioma during a 5-year period were prospectively included in this study. Pre- and postoperative data including adverse events were noted. The patients were assessed at 3, 6, and 12 months postoperatively, and annually thereafter, and they completed a postoperative SF-36 questionnaire. In addition, each patient's caregiver was interviewed to determine the effect of the patient's illness on the caregiver's life and responsibilities. Twenty-two operations were performed. A new permanent neurological deficit developed in five patients and in eight a temporary deficit or exacerbation of existing deficits occurred. Two patients underwent surgery to create a facial-hypoglossal nerve communication; five required a temporary percutaneous gastrostomy and/or tracheostomy; three required a shunt; and one underwent successful squint surgery. At 1 year postoperatively 13 patients had made a good or moderate recovery, three were severely disabled, and one had died--outcomes in keeping with other studies. By contrast, responses to the SF-36 questionnaire showed that, in all eight of its categories, between 43% and 75% of surviving patients were functioning below accepted norms. Fifty-six percent of caregivers experienced a major change in lifestyle and 38% experienced a major change with respect to their work. Conclusions After transpetrosal excision of a petroclival meningioma, the quality of life for the patient is worse than that indicated in surgeons' reported results. The impact on the patient's caregiver is profound--a burden perhaps not fully appreciated by the surgeon.


Author(s):  
Vinicius Trindade Gomes da Silva ◽  
Marcos Queiroz Teles Gomes ◽  
Leila Maria da Roz ◽  
Vitor Nagai Yamaki ◽  
Marcelo Prudente do Espirito Santo ◽  
...  

Author(s):  
Sima Sayyahmelli ◽  
Emel Avci ◽  
Burak Ozaydin ◽  
Mustafa K. Başkaya

AbstractTrigeminal schwannomas are rare nerve sheet tumors that represent the second most common intracranial site of occurrence after vestibular nerve origins. Microsurgical resection of giant dumbbell-shaped trigeminal schwannomas often requires complex skull base approaches. The extradural transcavernous approach is effective for the resection of these giant tumors involving the cavernous sinus.The patient is a 72-year-old man with headache, dizziness, imbalance, and cognitive decline. Neurological examination revealed left-sided sixth nerve palsy, a diminished corneal reflex, and wasting of temporalis muscle. Magnetic resonance imaging (MRI) showed a giant homogeneously enhancing dumbbell-shaped extra-axial mass centered within the left cavernous sinus, Meckel's cave, and the petrous apex, with extension to the cerebellopontine angle. There was a significant mass effect on the brain stem causing hydrocephalus. Computed tomography (CT) scan showed erosion of the petrous apex resulting in partial anterior autopetrosectomy (Figs. 1 and 2).The decision was made to proceed with tumor resection using a transcavernous approach. Gross total resection was achieved. The surgery and postoperative course were uneventful, and the patient woke up the same as in the preoperative period. MRI confirmed gross total resection of the tumor. The histopathology was a trigeminal schwannoma, World Health Organization (WHO) grade I. The patient continues to do well without any recurrence at 15-month follow-up.This video demonstrates important steps of the microsurgical skull base techniques for resection of these challenging tumors.The link to the video can be found at https://youtu.be/TMK5363836M


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