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https://www.readbyqxmd.com/read/29339322/endoscopic-endonasal-craniofacial-surgery-for-recurrent-skull-base-meningiomas-involving-the-pterygopalatine-fossa-the-infratemporal-fossa-the-orbit-and-the-paranasal-sinus
#1
Masahiro Shin, Masaaki Shojima, Kenji Kondo, Hirotaka Hasegawa, Shunya Hanakita, Akihiro Ito, Taichi Kin, Nobuhito Saito
OBJECT: Skull base meningiomas carry a non-negligible risk of recurrence. In particular, those arising from the sphenoid wings or middle cranial fossa penetrate into extracranial regions, uncommonly showing massive expansion into the craniofacial regions on recurrence. The role of endoscopic endonasal surgery for those intractable lesions remains unclear. METHODS: We performed endoscopic endonasal craniofacial surgery for 8 recurrent meningiomas invading into the pterygopalatine fossa, infratemporal fossa, nasopharynx, paranasal sinus, or orbit, comprising 2 meningothelial and 1 fibrous meningiomas (WHO grade I), 3 atypical and 1 clear cell meningiomas (grade II), and 1 anaplastic meningioma (grade III)...
January 12, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29339321/internal-thoracic-artery-to-middle-cerebral-artery-bypass-surgery-cadaveric-feasibility-study
#2
Stephen Monteith, Oded Goren, Ragu Sampath, Eric Lehr, Akshal Patel, Paul J Choi, Joe Iwanaga, Marios Loukas, R Shane Tubbs
BACKGROUND: A few options of extracranial donor vessels exist for utilization in intracranial vascular bypass procedures. To our knowledge, the use of an internal thoracic artery for cerebral revascularization has not been studied previously. Hence, this cadaveric feasibility study was performed. METHODS: The internal thoracic artery was dissected in five adult cadaveric specimens. The proximal diameter, distal diameter, and the length of the vessel were measured and recorded...
January 12, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29338455/current-treatment-options-for-meningioma
#3
Caroline Apra, Matthieu Peyre, Michel Kalamarides
With an annual incidence of 5/100,000, meningioma is the most frequent primary tumor of the central nervous system. Risk factors are radiotherapy and hormone intake. Most meningiomas are grade I benign tumors, but up to 15% are atypical and 2% anaplastic according to the WHO 2016 histological criteria. Areas covered: This review details the current standard therapy based on international guidelines and recent literature, and describes new approaches developed to treat refractory cases. First-line treatments are observation and surgery, but adjuvant radiotherapy/radiosurgery is discussed for atypical and indicated for anaplastic meningiomas...
January 17, 2018: Expert Review of Neurotherapeutics
https://www.readbyqxmd.com/read/29338280/variable-skeletal-anatomical-features-of-acromegaly-in-the-skull-and-craniocervical-junction
#4
Maria Piagkou, Othon Manolakos, Theodore Troupis, Nikolaos Lazaridis, Konstantinos Laios, Alexandros Samolis, Konstantinos Natsis
OBJECTIVE: This study adds important information regarding the morphological alterations caused by growth hormone hypersecretion in the skull and craniocervical junction (CCJ). A variably asymmetric skull due to acromegaly coexists with expansion of the paranasal sinuses and multiple Wormian bones. CASE REPORT: A pathologically asymmetric dry skull of a European male, aged 38 years at death, with cranial vault and skull base thickening is described. The extensive paranasal sinus pneumatization caused a generalized thinning of the bony walls...
November 2017: Acta Medica Academica
https://www.readbyqxmd.com/read/29336295/transnasal-endoscopic-resection-of-pediatric-orbital-cyst-how-i-do-it
#5
Jingying Ma, Zhenxiao Huang, Bing Zhou
BACKGROUND: An orbital cystic lesion is a common orbital disease and has classically been approached via external incision. The introduction of endoscopic surgery has revolutionized the management of sinus and skull base disorders. Similarly, endoscopic techniques have been increasingly used to access intraorbital lesions with excellent outcomes, especially in pediatric patients. OBJECTIVE: We described, in detail, the surgical technique of the endoscopic approach to treat a pediatric orbital cyst...
January 1, 2018: American Journal of Rhinology & Allergy
https://www.readbyqxmd.com/read/29336291/extent-of-surgery-in-endoscopic-transsphenoidal-skull-base-approaches-and-the-effects-on-sinonasal-morbidity
#6
Vincent Wu, Michael D Cusimano, John M Lee
BACKGROUND: Endoscopic transsphenoidal skull base surgery (ETSS) is now considered the criterion standard approach for resection of pituitary adenomas and other midline anterior skull base lesions. Normal sinonasal structures are resected during ETSS, which raises concerns for nasal morbidity and patient-based outcome. OBJECTIVE: To perform a surgical outcome assessment by examining whether the extent of ETSS approaches affected patient-specific sinonasal quality of life as measured by the 22-item Sino-Nasal Outcome Test (SNOT-22)...
January 1, 2018: American Journal of Rhinology & Allergy
https://www.readbyqxmd.com/read/29335798/3d-morphological-change-of-skull-base-and-fronto-temporal-soft-tissue-in-the-patients-with-unicoronal-craniosynostosis-after-fronto-orbital-advancement
#7
Bin Yang, Jian Ni, Binghang Li
PURPOSE: This study aims to comprehensively evaluate the deformation of the skull base and fronto-temporal soft tissue in the patients with anterior plagiocephaly over 1 year of age by three-dimensional (3D) imaging after fronto-orbital advancement (FOA). METHODS: We quantitatively analyzed the surgical results and outcome of FOA performed in 10 patients with anterior plagiocephaly. The measurements of the skull base and fronto-temporal soft tissue were performed based on 3D computed tomography (CT) scan...
January 15, 2018: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/29332500/microstructure-and-mechanical-properties-of-porous-titanium-structures-fabricated-by-electron-beam-melting-for-cranial-implants
#8
Khaja Moiduddin
The traditional methods of metallic bone implants are often dense and suffer from adverse reactions, biomechanical mismatch and lack of adequate space for new bone tissue to grow into the implant. The objective of this study is to evaluate the customized porous cranial implant with mechanical properties closer to that of bone and to improve the aesthetic outcome in cranial surgery with precision fitting for a better quality of life. Two custom cranial implants (bulk and porous) are digitally designed based on the Digital Imaging and Communications in Medicine files and fabricated using additive manufacturing...
January 1, 2018: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/29332078/magnetic-resonance-guided-high-intensity-focused-ultrasound-for-treating-movement-disorders
#9
Young Goo Kim, Eun Jung Kweon, Won Seok Chang, Hyun Ho Jung, Jin Woo Chang
Transcranial magnetic resonance-guided focused ultrasound (MRgFUS) surgery has recently gained favor as a novel, noninvasive alternative to conventional neurosurgery. In contrast to traditional ablative interventions, transcranial MRgFUS surgery is entirely imaging-guided and uses continuous temperature measurements at the target and surrounding tissue taken in real-time. Unlike Gamma Knife radiosurgery, MRgFUS surgery can make a lesion immediately and does not use ionizing radiation. Moreover, since no metallic device is implanted, MR imaging-based diagnosis is not restricted throughout life...
2018: Progress in Neurological Surgery
https://www.readbyqxmd.com/read/29327143/long-term-control-and-predictors-of-seizures-in-intracranial-meningioma-surgery-a-population-based-study
#10
Hai Xue, Olafur Sveinsson, Jiri Bartek, Petter Förander, Simon Skyrman, Lars Kihlström, Raana Shafiei, Tiit Mathiesen, Torbjörn Tomson
BACKGROUND: The aim of this retrospective study was to investigate the long-term seizure control and antiepileptic drug (AED) prescriptions, as well as identifying predictors of seizure(s) before and after surgery in a population-based cohort of operated intracranial meningioma patients. METHODS: A total of 113 consecutive adult (> 18 years old) patients with newly diagnosed meningioma operated at the Karolinska University Hospital between 2006 and 2008 were included and followed up until the end of 2015...
January 11, 2018: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29325963/surgical-anatomy-of-the-eustachian-tube-for-endoscopic-transnasal-skull-base-surgery-a-cadaveric-and-radiological-study
#11
Noritaka Komune, Satoshi Matsuo, Koichi Miki, Yojiro Akagi, Ryota Kurogi, Koji Iihara, Takashi Nakagawa
OBJECTIVE: The endoscopic endonasal approach to the anatomically complex lateral skull base presents technical challenges. The use of the Eustachian tube as a landmark to identify the petrous internal carotid artery has recently been reported, and this study aims to define the anatomical relationship between the Eustachian tube and its surrounding structures using cadaveric dissection and radiologic analysis. METHODS: To clarify the relationship of the Eustachian tube with its surrounding structures, we performed endoscopic and microscopic dissection of four adult cadaveric heads, and analyzed computed topography scans from 20 patients...
January 8, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29325947/usefulness-of-oblique-coronal-ct-and-mri-imaging-in-the-endoscopic-endonasal-approach-to-treat-skull-base-lesions
#12
Shigetoshi Yano, Naoki Shinojima, Mika Kitajima, Hiroyuki Uetani, Takuichiro Hide, Akitake Mukasa
OBJECTIVE: This report examines the utility of the preoperative image to orientate the surgeon in the sphenoid sinus during an endoscopic endonasal transsphenoidal approach (ETSS). METHODS: ETSS was performed in 100 cases of sellar lesion and used to classify the sphenoid sinus septum shape. Preoperative CT and MRI scans were taken for two types of coronal imaging: conventional and oblique. Expected sphenoid sinus septum shape was compared with those from ETSS to estimate concordance...
January 8, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29317233/c-cbl-and-cbl-b-expression-in-skull-base-chordomas-is-associated-with-tumor-progression-and-poor-prognosis
#13
Peng Luo, Xin Wang, Jinpeng Zhou, Long Li, Zhitao Jing
Chordomas are rare, locally aggressive malignancies that are often difficult to eradicate. Surgery and radiotherapy are the first-line treatments, but the probability of local recurrence is high. According to our previous research, c-Cbl and Cbl-b have been linked to tumor progression and poor prognosis of glioma. However, their role in skull base chordomas is unclear. To clarify this issue, in the present study we analyzed the expression of c-Cbl and Cbl-b in relation to the clinicopathological features and clinical outcome of skull base chordomas patients (n=70)...
January 6, 2018: Human Pathology
https://www.readbyqxmd.com/read/29314713/application-of-the-endoscopic-prelacrimal-recess-approach-to-the-maxillary-sinus-in-unilateral-maxillary-diseases
#14
Yi-Tsen Lin, Chih-Feng Lin, Te-Huei Yeh
BACKGROUND: The endoscopic endonasal prelacrimal recess approach to the maxillary sinus provides wide access to the walls and recesses of the maxillary sinus, and its use has been reported in many maxillary sinus and skull base diseases. The objective of this study was to determine the indication and feasibility of endoscopic sinus surgery using the prelacrimal recess approach in unilateral maxillary sinus diseases. METHODS: We reviewed 192 cases of unilateral maxillary sinus diseases; over 2 years, 15 cases underwent endoscopic surgery via the prelacrimal recess approach...
January 4, 2018: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/29309974/three-dimensional-printed-skull-base-simulation-for-transnasal-endoscopic-surgical-training
#15
Jia-Ping Zheng, Chu-Zhong Li, Guo-Qiang Chen, Gui-Dong Song, Ya-Zhuo Zhang
OBJECTIVE: Transnasal endoscopic skull base surgery (SBS) presents a great challenge for inexperienced neurosurgeons due to the complicated anatomic structures, 2-dimensional endoscopic view, limited operative field, and required skills. We designed a personalized multi-material and multi-color three-dimensional (3D)-printed SBS simulation to reproduce the complex anatomy of the skull base. The fidelity and feasibility for anatomical education and surgical training were assessed. METHODS: Two-dimensional computer tomography and magnetic resonance images were collected from a 42-year-old healthy male volunteer...
January 5, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29305118/endoscope-holders-in-cranial-neurosurgery-part-2-an-international-survey
#16
Dimitrios Paraskevopoulos, Shlomi Constantini, Jarnail Bal, Jonathan Roth
BACKGROUND: Following a prior systematic review of currently available endoscope holders (EH), we aspired to detect trends, task-specific preferences and pitfalls of EH in various cranial neuroendoscopic procedures. METHODS: A questionnaire was disseminated to members of the International Federation of Neuroendoscopy (IFNE). The questionnaire evaluated indications and pitfalls of EH in different applications, in particular, differentiating between intraventricular and skull base endoscopy, as well as sub-categories of these two main fields...
January 2, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29304919/cranial-tumor-surgical-outcomes-at-a-high-volume-academic-referral-center
#17
Desmond A Brown, Benjamin T Himes, Brittny T Major, Benjamin F Mundell, Ravi Kumar, Bruce Kall, Fredric B Meyer, Michael J Link, Bruce E Pollock, John D Atkinson, Jamie J Van Gompel, W Richard Marsh, Giuseppe Lanzino, Mohamad Bydon, Ian F Parney
OBJECTIVE: To determine adverse event rates for adult cranial neuro-oncologic surgeries performed at a high-volume quaternary academic center and assess the impact of resident participation on perioperative complication rates. PATIENTS AND METHODS: All adult patients undergoing neurosurgical intervention for an intracranial neoplastic lesion between January 1, 2009, and December 31, 2013, were included. Cases were categorized as biopsy, extra-axial/skull base, intra-axial, or transsphenoidal...
January 2018: Mayo Clinic Proceedings
https://www.readbyqxmd.com/read/29301059/objective-validation-of-perfusion-based-human-cadaveric-simulation-training-model-for-management-of-internal-carotid-artery-injury-in-endoscopic-endonasal-sinus-and-skull-base-surgery
#18
Jasper Shen, Kevin Hur, Zhipeng Zhang, Michael Minneti, Martin Pham, Bozena Wrobel, Gabriel Zada
BACKGROUND: The emergence of minimally invasive endoscopic endonasal skull base surgery has necessitated reproducible and realistic simulators of rare vascular injuries. OBJECTIVE: To assess the face and content validity of an innovative perfusion-based cadaveric model developed to simulate internal carotid artery (ICA) injury during endoscopic surgery. METHODS: Otolaryngology and neurosurgery trainees attempted 3 consecutive trials of endoscopic control of a parasellar ICA injury, with standardized technical feedback...
December 29, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29298208/electrophysiology-of-extraocular-cranial-nerves-oculomotor-trochlear-and-abducens-nerve
#19
Praveen Hariharan, Jeffery R Balzer, Katherine Anetakis, Donald J Crammond, Parthasarathy D Thirumala
The utility of extraocular cranial nerve electrophysiologic recordings lies primarily in the operating room during skull base surgeries. Surgical manipulation during skull base surgeries poses a risk of injury to multiple cranial nerves, including those innervating extraocular muscles. Because tumors distort normal anatomic relationships, it becomes particularly challenging to identify cranial nerve structures. Studies have reported the benefits of using intraoperative spontaneous electromyographic recordings and compound muscle action potentials evoked by electrical stimulation in preventing postoperative neurologic deficits...
January 2018: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/29290519/reduced-intercarotid-artery-distance-in-syndromic-and-isolated-brachycephaly
#20
Reza Assadsangabi, Mehrdad Hajmomenian, Seyed Ali Nabavizadeh, James Eric Schmitt, Arastoo Vossough
INTRODUCTION: The morphology of the skull base can be altered in craniosynostoses. The objective of this study is to evaluate the reduced intercarotid artery distance in the lacerum segment in patients with syndromic and isolated brachycephaly. MATERIALS AND METHODS: The distances between the inner walls of the carotid canal at the lacerum segment were measured on high-resolution CT scans in children with Crouzon (25), Pfeiffer (21), Apert (26), Saethre-Chotzen (7) syndromes, isolated bicoronal synostosis (9), and compared to an age-matched control group (30)...
October 9, 2017: Pediatric Neurology
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