3. Posterior Petrosal Approch : Its Surgical Anatomy and Technical Aspect(MS2-3 Basic Approaches of Skull Base Surgery, The 27^ Annual Meeting of The Japanese Congress of Neurological Surgeons)

2007 ◽  
Vol 16 (4) ◽  
pp. 330
Author(s):  
Katsumi Sakata
Keyword(s):  
Skull Base ◽  
Annual Meeting ◽  
Skull Base Surgery ◽  
Technical Aspect ◽  
Surgical Anatomy ◽  
Basic Approaches

Surgical nuances for the endoscopic endonasal transpterygoid approach to lateral sphenoid sinus encephaloceles

2012 ◽  
Vol 32 (6) ◽  
pp. E5 ◽  
Author(s):  
Richard F. Schmidt ◽  
Osamah J. Choudhry ◽  
Joseph Raviv ◽  
Soly Baredes ◽  
Roy R. Casiano ◽  
...  
Keyword(s):  
Skull Base ◽  
Sphenoid Sinus ◽  
Skull Base Surgery ◽  
Surgical Anatomy ◽  
Endoscopic Endonasal ◽  
Csf Rhinorrhea ◽  
Lateral Recess ◽  
Sternberg Canal ◽  
Deep Location ◽  
Repair Techniques

Lateral sphenoid encephaloceles of the Sternberg canal are rare entities and usually present with spontaneous CSF rhinorrhea. Traditionally, these were treated via transcranial approaches, which can be challenging given the deep location of these lesions. However, with advancements in endoscopic skull base surgery, including improved surgical exposures, angled endoscopes and instruments, and novel repair techniques, these encephaloceles can be resected and successfully repaired with purely endoscopic endonasal approaches. In this report, the authors review the endoscopic endonasal transpterygoid approach to the lateral recess of the sphenoid sinus for repair of temporal lobe encephaloceles, including an overview of the surgical anatomy from an endoscopic perspective, and describe the technical operative nuances and surgical pearls for these cases. The authors also present 4 new cases of lateral sphenoid recess encephaloceles that were successfully treated using this approach.

Surgical Anatomy of the Eustachian Tube for Endoscopic Transnasal Skull Base Surgery: A Cadaveric and Radiologic Study

2018 ◽  
Vol 112 ◽  
pp. e172-e181 ◽  
Author(s):  
Noritaka Komune ◽  
Satoshi Matsuo ◽  
Koichi Miki ◽  
Yojiro Akagi ◽  
Ryota Kurogi ◽  
...  
Keyword(s):  
Skull Base ◽  
Eustachian Tube ◽  
Skull Base Surgery ◽  
Surgical Anatomy ◽  
Radiologic Study

scholarly journals Role of transcranial sphenoidotomy in skull base surgery: classification of surgical techniques based on the surgical anatomy of the sphenoid sinus

2019 ◽  
Vol 131 (5) ◽  
pp. 1658-1667 ◽  
Author(s):  
Kenichiro Iwami ◽  
Masazumi Fujii ◽  
Yugo Kishida ◽  
Shinya Jinguji ◽  
Masayuki Yamada ◽  
...  
Keyword(s):  
Skull Base ◽  
Sphenoid Sinus ◽  
Skull Base Surgery ◽  
En Bloc Resection ◽  
Bloc Resection ◽  
Surgical Anatomy ◽  
University Hospital ◽  
En Bloc ◽  
Cadaveric Dissection ◽  
Medical University

OBJECTIVEAlthough sphenoidotomy is more commonly performed via the transnasal approach than via the transcranial approach, transcranial sphenoidotomy (TCS) remains indispensable for en bloc resection of locally advanced sinonasal malignant tumors (SNMTs) extending to the skull base. TCS also enables transsphenoidal transposition of the temporoparietal galeal flap (TPGF) to compensate for the lack of vascularized reconstructive tissue after endoscopic transnasal skull base surgery. The objective of this study was to review the authors’ surgical experience using TCS with an emphasis on the surgical anatomy of the sphenoid sinus and on the purpose of TCS. Relevant anatomy is further illustrated through cadaveric dissection and photo documentation.METHODSThe authors reviewed the records of 50 patients who underwent TCS at the Nagoya University Hospital, Fukushima Medical University Hospital, or Aichi Medical University Hospital over the course of 7 years (between January 2011 and November 2017). The authors also performed cadaveric dissection in 2 adult cadaveric skull base specimens.RESULTSOf the 50 patients included in this study, 44 underwent craniofacial resection (CFR) for en bloc resection of SNMTs involving the anterior and/or lateral skull base, and 6 underwent transsphenoidal transposition of the TPGF flap. The authors categorized the TCS procedures according to the portion of the sphenoid sinus wall involved (i.e., superior, lateral, and superolateral). Superior sphenoidotomy was used in patients requiring anterior CFR. Lateral sphenoidotomy was further divided into 2 subtypes, with type 1 procedures performed for the transsphenoidal transpositioning of the TPGF, and type 2 procedures used in patients requiring lateral CFR. Superolateral sphenoidotomy was used in anterolateral CFR.CONCLUSIONSTCS still represents a useful tool in the armamentarium of neurosurgeons treating central skull base lesions. The newly proposed surgical classification facilitates a profound understanding of TCS and how to incorporate this technique into clinical practice.

scholarly journals Retrosigmoid Craniectomy for Vestibular Schwannoma with Hearing Preservation

2018 ◽  
Vol 80 (S 03) ◽  
pp. S274-S275
Author(s):  
Anthony M. Tolisano ◽  
Ankur R. Patel ◽  
Samuel L. Barnett ◽  
Brandon Isaacson
Keyword(s):  
Skull Base ◽  
Vestibular Schwannoma ◽  
Skull Base Surgery ◽  
Tertiary Care ◽  
Hearing Preservation ◽  
Normal Hearing ◽  
Surgical Anatomy ◽  
Gross Total Resection ◽  
Single Patient ◽  
Total Resection

Objectives To describe a retrosigmoid craniectomy, hearing-preservation approach for resection of vestibular schwannoma. Design/Setting/Participants A video of a single patient undergoing the above approach at a tertiary care skull base surgery program. Results This video demonstrates a retrosigmoid craniectomy approach for resection of an enlarging intracanalicular vestibular schwannoma in a patient with normal hearing. The video highlights the pertinent surgical anatomy and outlines in a step-by-step fashion the surgical steps. The patient obtained a gross total resection with preservation of hearing. Conclusion A retrosigmoid craniectomy approach for vestibular schwannoma offers a potentially hearing preservation approach for selected tumors.The link to the video can be found at: https://youtu.be/VM663XztRZw.

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