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endoscopic endonasal

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https://www.readbyqxmd.com/read/28931253/relationship-of-the-optic-nerve-to-the-medial-rectus-muscle-during-endonasal-dissection-of-the-medial-intraconal-orbital-apex
#1
Dmitriy Petrov, John Craig, Jayesh Thawani, Kalil Abdullah, James N Palmer, Nithin D Adappa, John Y K Lee
BACKGROUND: Few studies have established surgical landmarks for endoscopic endonasal dissection of the intraconal orbital apex (OA). OBJECTIVE: We describe the optic nerve (ON) anatomy and its relationships, as seen during a fully endoscopic, endonasal approach to the medial intraconal OA. METHODS: The study question was approached through a cadaver dissection and a radiographic study. Four formalin-fixed, latex-injected cadaver heads were dissected using transnasal endoscopic techniques...
February 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28931251/managing-arterial-injury-in-endoscopic-skull-base-surgery-case-series-and-review-of-the-literature
#2
Alicia Del Carmen Becerra Romero, Jagath Lal Gangadharan, Evan D Bander, Yves Pierre Gobin, Vijay K Anand, Theodore H Schwartz
BACKGROUND: The most feared complications following endoscopic endonasal skull base surgery are arterial vascular injuries. Previously published literature is restricted to internal carotid artery injuries. The ideal method for controlling arterial bleeding during this kind of procedure is debated, and a variety of techniques have been advocated. OBJECTIVE: To evaluate the management and outcome following intraoperative arterial injury during endoscopic endonasal skull base surgery...
February 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28929079/spontaneous-recurrent-csf-rhinorrhoea-a-rare-case-and-review-of-literature
#3
Nishit Shah, C E Deopujari, Sunita Chhapola Shukla
Cerebrospinal fluid (CSF) rhinorrhoea is the leakage of CSF through the communication between the subarachnoid space and the nasal cavity. Surgical repair is indicated in all cases of spontaneous leaks, recurrent leaks, leaks that do not stop after conservative management and cases with history of meningitis. We present a rare case of spontaneous (delayed onset post traumatic) CSF rhinorrhoea with multiple defect sites, which was treated with an endonasal endoscopic repair. The patient was asymptomatic for 9 years after surgery, and then presented with a spontaneous left frontal recess CSF leak, which was closed using endonasal approach...
September 2017: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/28922241/a-shift-in-the-orbit-immediate-endoscopic-reconstruction-after-transnasal-orbital-tumors-resection
#4
Giacomo Colletti, Alberto M Saibene, Federico Pessina, Marco Duvina, Fabiana Allevi, Giovanni Felisati, Federico Biglioli
Endoscopic endonasal resection of orbital lesions is a safe and common approach. Nevertheless, medial orbital wall defects following the procedure are not routinely addressed, potentially leading to diplopia and enophthalmos. In this article, the authors propose a new technique for purely endoscopic endonasal reconstruction of orbital wall defects following endoscopic endonasal resection of orbital lesions.The patient, a 43-year-old male, suffering from right exophthalmos and diplopia due to a venous malformation of the right orbit underwent endoscopic endonasal resection of the mass...
September 15, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28914873/-the-extended-endoscopic-endonasal-transsphenoidal-approach-in-surgery-for-epidermoid-cysts-of-the-chiasmatic-region
#5
D V Fomichev, P L Kalinin, M A Kutin, O I Sharipov, I V Chernov
Surgical treatment for epidermoid cysts of the chiasmatic region is a challenge because of the tendency to a massive spread of epidermoid masses through the cerebrospinal fluid pathways and a significant lesion deviation from the midline. PURPOSE: To analyze capabilities of the extended endoscopic endonasal transsphenoidal approach in surgery for epidermoid cysts. MATERIAL AND METHODS: The study included 6 patients with epidermoid cysts of the chiasmatic region who were operated on using the extended anterior endoscopic endonasal transsphenoidal approach at the Burdenko Neurosurgical Institute in the past 5 years...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/28914866/-extended-endoscopic-endonasal-posterior-transclival-approach-to-tumors-of-the-clival-region-and-ventral-posterior-cranial-fossa-part-1-topographic-and-anatomical-features-of-the-clivus-and-adjacent-structures
#6
A N Shkarubo, K V Koval', G F Dobrovol'skiy, M A Shkarubo, V V Karnaukhov, B A Kadashev, D N Andreev, I V Chernov, O A Gadzhieva, O Yu Aleshkina, E A Anisimova, P L Kalinin, M A Kutin, D V Fomichev, O I Sharipov, D B Ismailov, E S Selivanov
OBJECTIVE: to describe the main topographic and anatomical features of the clival region and its adjacent structures for improvement and optimization of the extended endoscopic endonasal posterior (transclival) approach for resection of tumors of the clival region and ventral posterior cranial fossa. MATERIAL AND METHODS: We performed a craniometric study of 125 human skulls and a topographic anatomical study of heads of 25 cadavers, the arterial and venous bed of which was stained with colored silicone (the staining technique was developed by the authors) to visualize bed features and individual variability...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/28899832/radiological-predictors-for-extent-of-resection-in-pituitary-adenoma-surgery-a-single-center-study
#7
Jose L Sanmillán, Alberto Torres-Diaz, Juan José Sanchez-Fernández, Ruth Lau, Cristina Ciller, Paloma Puyalto, Andreu Gabarrós
BACKGROUND: Preoperative radiologic evaluation of pituitary adenomas is essential. Despite the efforts made to determine the achieved resection grade after pituitary adenoma surgery, there is a high level of disagreement among all the available classifications and measurement methods employed. Our study aimed to determine pituitary adenoma imaging features, easily obtained from preoperative magnetic resonance, which could be used as resection predictor variables. Secondly, we analyzed the usefulness of the ellipsoid method in pituitary adenoma volume determination...
September 9, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28892944/endoscopic-endonasal-approach-of-blow-out-fracture-reduction-a-novel-technique
#8
Vinod Felix, Narendrakumar Veerasigamani
Blunt trauma to orbit can lead to orbital blow out fracture. Computerized tomography of paranasal sinuses plays the main role in diagnosing it. Repairing the defect and restoring the orbital contents is a challenging task for the surgeon. Endoscopic endonasal approach in reduction of blow out fracture provides good cosmetic outcomes and grossly minimize surgical complications. We report a case of 18-year-old male presented with diplopia, restriction of eye movements and enophthalmos due to Road traffic accident...
July 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28887879/orbital-floor-fracture-repair-the-endonasal-approach
#9
T Kuhnel, H Jagle, W Hosemann, R Weber, V Vielsmeier
To avoid the dangers associated with lower eyelid approaches to the orbital floor and to improve visualization, we propose an endoscopic procedure for orbital floor fracture reduction and osteosynthesis using endonasal access via the medial maxillary sinus wall. The technique of endoscopic, endonasal transantral surgery is described, together with a retrospective analysis of 17 patients who had undergone this surgical procedure in the Department of Otorhinolaryngology, University of Regensburg, between July 2013 and June 2016...
September 9, 2017: Rhinology
https://www.readbyqxmd.com/read/28887284/quantitative-comparison-of-three-endoscopic-approaches-to-the-parasellar-region-laboratory-investigation
#10
Evgenii Belykh, Kaan Yağmurlu, Yuan Hong, Michael A Mooney, Baran Bozkurt, Vadim A Byvaltsev, Peter Nakaji, Mark C Preul
BACKGROUND: Endoscopic endonasal transsphenoidal and contralateral sublabial transmaxillary approaches are used for approaching parasellar lesions. The aim of this anatomical study was to compare endoscopic endonasal uninostril and binostril (contralateral) and contralateral sublabial transmaxillary approaches using a quantitative analysis of exposure limits and instrument working avenues. METHODS: Six formalin-fixed silicone-injected adult cadaveric heads (12 sides) were studied...
September 5, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28887281/cerebrospinal-fluid-leak-rhinorrhea-after-systemic-erlotinib-chemotherapy-for-metastatic-lung-cancer-a-familiar-problem-from-an-unfamiliar-culprit
#11
Blake Priddy, Douglas A Hardesty, André Beer-Furlan, Bradley Otto, Daniel M Prevedello
BACKGROUND: Cerebrospinal fluid (CSF) rhinorrhea after medical therapy for pituitary prolactinoma is a rare but well-described phenomenon. To our knowledge, no CSF leaks have been reported after targeted medical treatment of pituitary or anterior skull base metastases. We report this unusual case to raise awareness of spontaneous CSF leaks in the setting of skull base metastatic disease. CASE PRESENTATION: A 66-year-old woman presented with EGFR-mutant Stage IV adenocarcinoma of the lung...
September 5, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28882714/combined-minimally-invasive-supraciliary-and-transfacial-approach-for-large-tumors-with-skull-base-and-sinonasal-involvement
#12
Pal Barzo, Zsolt Zador, Mihaly Bodosi, Zsolt Bella, Daniel Jambor, Bela Fulop, Jeno Czigner
BACKGROUND: Tumors invading both the anterior skull base and the sinonasal area have been traditionally accessed via largely invasive open craniofacial approaches. Minimally invasive extended endoscopic endonasal approaches have recently become increasingly available, but have anatomical limitations and require incremental experience and thus high patient volume. Our objective was to assess the applicability of a novel combination of the minimally invasive supraciliary incision and the limited maxillofacial osteotomy as a combined surgical approach for large tumors invading both the anterior skull base and the sinonasal area...
September 4, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28879905/endonasal-endoscopic-approach-to-orbit
#13
Awadhesh Kumar Jaiswal
No abstract text is available yet for this article.
September 2017: Neurology India
https://www.readbyqxmd.com/read/28875119/indocyanine-green-fluorescence-to-evaluate-nasoseptal-flap-viability-in-endoscopic-endonasal-cranial-base-surgery
#14
Edward E Kerr, Ali Jamshidi, Ricardo L Carrau, Raewyn G Campbell, Leo F Ditzel Filho, Bradley A Otto, Daniel M Prevedello
Objectives  The pedicled nasoseptal flap (NSF) has dramatically reduced postoperative cerebrospinal fluid leakage following endoscopic endonasal approach (EEA) surgery. Although rare, its arterial supply may be damaged during harvest or may be preoperatively damaged for numerous reasons. Early recognition permits harvesting a contralateral flap before sacrificing its pedicle as part of the surgical exposure or use of an alternative flap. Design  Technical feasibility study and case series. Setting  Tertiary care university-associated medical center...
October 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28869375/treatment-strategies-for-craniopharyngiomas
#15
Malte Ottenhausen, Kavelin Rumalla, Emanuele LA Corte, Andrew Alalade, Prakash Nair, Jonathan Forbes, Atef Ben Nsir, Theodore H Schwartz
Craniopharyniomas arise from the sellar region and are particularly challenging because of their close proximity to critical neurovascular structures, including cranial nerves, brainstem, internal carotid arteries, posterior cerebral arteries, hypothalamus, and the pituitary gland. The tumors are benign on histology but can cause serious symptoms by compression of surrounding vital structures. While radical surgery and gross total resection (GTR) remains the first line treatment, choosing the optimal surgical approach is critical for the minimization of complications and post-operative morbidity...
September 4, 2017: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/28868197/combined-simultaneous-transcranial-and-endoscopic-endonasal-resection-of-sphenoorbital-meningioma-extending-into-the-sphenoid-sinus-pterygopalatine-fossa-and-infratemporal-fossa
#16
Masahide Matsuda, Hiroyoshi Akutsu, Shuho Tanaka, Akira Matsumura
BACKGROUND: Sphenoorbital meningiomas are surgically challenging because of their nature to extend to adjacent structures. Here, we describe a case of recurrent sphenoorbital meningioma extending into the sphenoid sinus, pterygopalatine fossa, and infratemporal fossa, which was resected using combined simultaneous transcranial and endoscopic endonasal approaches. CASE DESCRIPTION: A 62-year-old man who had 15 years earlier undergone partial resection of a left sphenoorbital meningioma presented with a 1-year history of progressive proptosis of the left eye...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28867316/endoscopic-endonasal-surgery-for-treatment-of-pituitary-apoplexy-16-years-of-experience-in-a-specialized-pituitary-center-endoscopic-surgery-for-pituitary-apoplexy
#17
Jackson A Gondim, Lucas Alverne F de Albuquerque, Joao Paulo Almeida, Tania Bulcao, Erica Gomes, Michele Schops, Raquel Vasconcelos, Flora da Paz, Sergio Botelho Guimarães
OBJECTIVE: Symptomatic pituitary apoplexy is a rare but life-threatening condition caused by sudden hemorrhage or infarction of a pituitary adenoma. In the current study, we aim to evaluate the clinical presentation, management and clinical outcomes in a cohort of patients who were treated for this condition in our center in the last 16 years. METHODS: We performed a retrospective analysis of all patients who underwent endoscopic endonasal surgery for treatment of symptomatic pituitary apoplexy between 2001 and 2016 in our center...
August 31, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28862553/transorbital-endoscopic-eyelid-approach-for-resection-of-sphenoorbital-meningiomas-with-predominant-hyperostosis-report-of-2-cases
#18
João Paulo Almeida, Sacit B Omay, Sathwik R Shetty, Yu-Ning Chen, Armando S Ruiz-Treviño, Buqing Liang, Vijay K Anand, Benjamin Levine, Theodore H Schwartz
Sphenoorbital meningiomas (SOMs) are slow-growing tumors that originate from the sphenoidal wing and are associated with visual deterioration, extrinsic ocular movement disorders, and proptosis caused by hyperostosis of the lateral wall of the orbit. In some cases, the intracranial component is quite small or "en plaque," and the majority of the symptoms arise from adjacent hyperostosis. Craniotomy has traditionally been the standard of care, but new minimally invasive multiportal endoscopic approaches offer an alternative...
September 1, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28862552/cavernous-sinus-compartments-from-the-endoscopic-endonasal-approach-anatomical-considerations-and-surgical-relevance-to-adenoma-surgery
#19
Juan C Fernandez-Miranda, Nathan T Zwagerman, Kumar Abhinav, Stefan Lieber, Eric W Wang, Carl H Snyderman, Paul A Gardner
OBJECTIVE Tumors with cavernous sinus (CS) invasion represent a neurosurgical challenge. Increasing application of the endoscopic endonasal approach (EEA) requires a thorough understanding of the CS anatomy from an endonasal perspective. In this study, the authors aimed to develop a surgical anatomy-based classification of the CS and establish its utility for preoperative surgical planning and intraoperative guidance in adenoma surgery. METHODS Twenty-five colored silicon-injected human head specimens were used for endonasal and transcranial dissections of the CS...
September 1, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28862548/reoperation-for-growth-hormone-secreting-pituitary-adenomas-report-on-an-endonasal-endoscopic-series-with-a-systematic-review-and-meta-analysis-of-the-literature
#20
João Paulo Almeida, Armando S Ruiz-Treviño, Buqing Liang, Sacit B Omay, Sathwik R Shetty, Yu-Ning Chen, Vijay K Anand, Kartikey Grover, Paul Christos, Theodore H Schwartz
OBJECTIVE Surgery is generally the first-line therapy for acromegaly. For patients with residual or recurrent tumors, several treatment options exist, including repeat surgery, medical therapy, and radiation. Reoperation for recurrent acromegaly has been associated with poor results, with hormonal control usually achieved in fewer than 50% of cases. Extended endonasal endoscopic approaches (EEAs) may potentially improve the results of reoperation for acromegaly by providing increased visibility and maneuverability in parasellar areas...
September 1, 2017: Journal of Neurosurgery
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