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Base of skull surgery

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https://www.readbyqxmd.com/read/29661661/three-dimensional-study-of-31-cases-of-synostotic-anterior-plagiocephaly-before-and-after-surgical-management-the-lille-protocol
#1
Ambre Simon, Emmanuelle Bocquet, Philippe Pellerin, Matthieu Vinchon, Patrick Dhellemmes, Véronique Martinot, Alexis Wolber, Clotilde Calibre, Philippe Charlier, Pierre Guerreschi
Synostotic anterior plagiocephaly is a rare pathological cranial malformation. Therapeutic options are rarely studied due to the rarity of the malformation and difficulties in diagnosis and care management. The objective of this study was to analyze the results obtained with the Lille protocol based on 62 CT-scans done before and after surgery in 31 patients. A specific analysis was designed for this work. Nine cephalometric measures enabled to evidence on each CT-Scan the corrections made on the fronto-orbital bandeau and the potential impact of surgery on the craniofacial structures...
March 28, 2018: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29661611/nasal-polyposis-or-chronic-olfactory-rhinitis
#2
R Jankowski, C Rumeau, P Gallet, D T Nguyen
The concept of chronic rhinosinusitis with or without polyps is founded on the structural and functional unicity of the pituitary mucosa and its united response to environmental aggression by allergens, viruses, bacteria, pollution, etc. The present review sets this concept against the evo-devo three-nose theory, in which nasal polyposis is distinguished as specific to the olfactory nose and in particular to the non-olfactory mucosa of the ethmoid, which is considered to be not a sinus but rather the skull-base bone harboring the olfactory mucosa...
April 13, 2018: European Annals of Otorhinolaryngology, Head and Neck Diseases
https://www.readbyqxmd.com/read/29660043/delayed-occipitocervical-instability-with-cranial-settling-after-far-lateral-transcondylar-surgery-for-invasive-skull-base-tumor
#3
Marcus D Mazur, Andrew T Dailey, Lubdha Shah, Jonathan P Scoville, William T Couldwell
BACKGROUND: Occipitocervical instability is a rare but potentially severe complication of a far-lateral transcondylar surgical approach to the skull base. OBJECTIVE: To investigate the incidence of clinically significant occipitocervical instability after transcondylar surgery via a far-lateral approach and to determine whether the extent of occipital condyle resection relative to the hypoglossal canal was associated with the development of occipitocervical instability...
April 11, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29657933/relationship-between-height-of-ethmoid-skull-base-and-length-of-lateral-lamella-by-sectional-coronal-computed-tomography-scan-before-endoscopic-sinus-surgery
#4
Seyyed Mustafa Hashemi, Nezamoddin Berjis, Hamidreza Ebrahimi
Background: Damage to ethmoid skull base (ESB) and lateral lamella (LL) during endoscopic sinus surgery (ESS) causes penetration into the brain. This study is aimed to determine the relationship between the height of ESB and length of LL by sectional coronal computed tomography (CT) scans before ESS. Materials and Methods: In a cross-sectional study, 100 patients admitted to ENT clinic of Al-Zahra Hospital, filled the consents regarding the use of CT scan stereotype...
2018: Advanced Biomedical Research
https://www.readbyqxmd.com/read/29650453/feasibility-of-real-time-intraoperative-fluorescence-imaging-of-dural-sinus-thrombosis
#5
Laureen D Hachem, Alireza Mansouri, Joseph Chen, Farhad Pirouzmand
Dural sinus thrombosis is a well-recognized and potentially serious complication following lateral skull base surgery. Methods of diagnosis are limited to post-operative computerized tomography scans or magnetic resonance venography. There are currently no reports of an intraoperative technique used to detect dural sinus thrombosis. Here, we describe the case of a 62-year-old woman who underwent translabyrinthine resection of a right vestibular schwannoma with no evidence of sinus thrombosis on pre-operative scans...
April 9, 2018: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29627874/meningiomas-skull-base-versus-non-skull-base
#6
Torstein R Meling, Michele Da Broi, David Scheie, Eirik Helseth
To identify differences between skull base meningiomas (SBM) and non-skull base meningiomas (NSBM). All adult patients (18.0-69.9 years) operated for intracranial meningiomas between 1990 and 2010 at our institution were investigated. Al-Mefty's definition was used to dichotomize tumors into SBM and NSBM. Overall, 1148 consecutive patients were identified. Median age at surgery was 54.2 years [18.1-69.9]. Median follow-up was 7.4 years [0.0-20.9]. There were 562 patients (49%) with SBM and 586 (51%) with NSBM...
April 7, 2018: Neurosurgical Review
https://www.readbyqxmd.com/read/29619106/an-analysis-of-anatomic-variations-of-the-sphenoid-sinus-and-its-relationship-to-the-internal-carotid-artery
#7
Myrian Marajó Dal Secchi, Ricardo Landini Lutaif Dolci, Reginaldo Teixeira, Paulo Roberto Lazarini
Introduction  The sphenoid sinus (SS) has a high variability; its anatomical relations and variations must be well understood prior to the expanded endoscopic surgery (EES) at the skull base via the endonasal transsphenoidal approach. A feared complication is injury to the internal carotid artery (ICA). Objective  To evaluate the anatomic variations of the SS and its relationship to the ICA using computed tomography (CT). Methods  Cross-sectional retrospective study. Analysis of 90 patients' CT scans on axial, coronal and sagittal planes with 1 mm slices, evaluating lateral and posterior extensions of pneumatization of the SS, deviation of the sphenoid septum, presence of septations and their relationship to the parasellar and paraclival segments of the internal carotid artery (psICA and pcICA, respectively)...
April 2018: International Archives of Otorhinolaryngology
https://www.readbyqxmd.com/read/29617919/combined-nasoseptal-and-inferior-turbinate-flap-for-reconstruction-of-large-skull-base-defect-after-expanded-endonasal-approach-operative-technique
#8
Julien Boetto, Moujahed Labidi, Kentaro Watanabe, Shunya Hanakita, Schahrazed Bouazza, Thibault Passeri, Anne-Laure Bernat, Sebastien Froelich
BACKROUND: Increasing indications for endoscopic endonasal approaches have led neurosurgeons to develop new reconstruction techniques for larger skull base defects. Vascularized grafts have been a great adjunction to reduce the rate of cerebrospinal fluid leak and can also be used to cover exposed critical structures such as the internal carotid artery. The nasoseptal flap and the inferior or middle turbinate flap are thus widely used in endoscopic skull base surgery, but may be insufficient for very large defects...
March 29, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29617890/quantification-of-subdural-electrode-shift-between-initial-implantation-postimplantation-computed-tomography-and-subsequent-resection-surgery
#9
Xiaoyao Fan, David W Roberts, Yasmin Kamal, Jonathan D Olson, Keith D Paulsen
BACKGROUND: Subdural electrodes are often implanted for localization of epileptic regions. Postoperative computed tomography (CT) is typically acquired to locate electrode positions for planning any subsequent surgical resection. Electrodes are assumed to remain stationary between CT acquisition and resection surgery. OBJECTIVE: To quantify subdural electrode shift that occurred between the times of implantation (Crani 1), postoperative CT acquisition, and resection surgery (Crani 2)...
March 29, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29606053/high-grade-meningiomas-biology-and-implications
#10
Wenya Linda Bi, Vikram C Prabhu, Ian F Dunn
The epochal developments in the treatment of meningioma-microsurgery, skull base techniques, and radiation therapy-will be appended to include the rational application of targeted and immune therapeutics, previously ill-fitting concepts for a tumor that has traditionally been a regarded as a surgical disease. The genomic and immunological architecture of these tumors continues to be defined in ever-greater detail. Grade I meningiomas are driven by NF2 alterations or mutations in AKT1, SMO, TRAF7, PIK3CA, KLF4, POLR2A, SUFU, and SMARCB1...
April 2018: Neurosurgical Focus
https://www.readbyqxmd.com/read/29606047/multivariate-risk-factor-analysis-and-literature-review-of-postoperative-deterioration-in-karnofsky-performance-scale-score-in-elderly-patients-with-skull-base-meningioma
#11
Manish Kolakshyapati, Fusao Ikawa, Masaru Abiko, Takafumi Mitsuhara, Yasuyuki Kinoshita, Masaaki Takeda, Kaoru Kurisu
OBJECTIVE Elderly patients are particularly at risk for severe morbidity following surgery. Among the various risk factors, age and skull base location of meningioma are known to be poor prognostic factors in meningioma surgery. The authors conducted this study to analyze significant preoperative risk factors in elderly patients with skull base meningioma. METHODS A total of 265 elderly patients (≥ 65 years old) with meningioma were surgically treated at the authors' institute and affiliated hospitals between 2000 and 2016, and these cases were reviewed...
April 2018: Neurosurgical Focus
https://www.readbyqxmd.com/read/29599948/modelling-and-experiment-based-on-a-navigation-system-for-a-cranio-maxillofacial-surgical-robot
#12
Xingguang Duan, Liang Gao, Yonggui Wang, Jianxi Li, Haoyuan Li, Yanjun Guo
In view of the characteristics of high risk and high accuracy in cranio-maxillofacial surgery, we present a novel surgical robot system that can be used in a variety of surgeries. The surgical robot system can assist surgeons in completing biopsy of skull base lesions, radiofrequency thermocoagulation of the trigeminal ganglion, and radioactive particle implantation of skull base malignant tumors. This paper focuses on modelling and experimental analyses of the robot system based on navigation technology. Firstly, the transformation relationship between the subsystems is realized based on the quaternion and the iterative closest point registration algorithm...
2018: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/29588905/endoscopic-endonasal-resection-of-a-suprasellar-pituitary-adenoma-mimicking-tuberculum-sellae-meningioma-in-a-patient-with-an-intrasellar-persistent-trigeminal-artery
#13
Alaa S Montaser, Alexandre B Todeschini, Juan M Revuelta Barbero, Mostafa Shahein, E Antonio Chiocca, Bradley A Otto, Ricardo L Carrau, Daniel M Prevedello
A 50-year-old female with an incidentally diagnosed suprasellar lesion was initially managed conservatively due to the presence of an intrasellar persistent trigeminal artery going through the dorsum sellae and fundamentally forming the blood supply of the entire posterior circulation. Serial follow-up brain magnetic resonance imaging (MRI) revealed progressive enlargement of the suprasellar lesion over 4 years period. Surgery was indicated after the initial tumor growth; however, the patient refused surgery for fear of complications related to the persistent trigeminal artery...
April 2018: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/29588903/endoscopic-endonasal-transoculomotor-triangle-approach-for-the-resection-of-a-pituitary-adenoma-with-ambient-cistern-extension
#14
Georgios Andrea Zenonos, Eric Wesley Wang, Juan C Fernandez-Miranda
Objectives  The current video presents the nuances of the endoscopic endonasal transoculomotor triangle approach for the resection of a pituitary adenoma with extension into the ambient cistern. Design  The video analyzes the presentation, preoperative workup and imaging, surgical steps and technical nuances of the surgery, the clinical outcome, and follow-up imaging. Setting  The patient was treated by a skull base team consisting of a neurosurgeon and an ENT surgeon at a teaching academic institution...
April 2018: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/29588901/endoscopic-endonasal-transtuberculum-sellae-approach-for-the-resection-of-suprasellar-intrainfundibular-epidermoid-cyst
#15
Alaa S Montaser, Juan M Revuelta Barbero, Mostafa Shahein, Alexandre B Todeschini, Bradley A Otto, Ricardo L Carrau, Daniel M Prevedello
A 49-year-old female presented with intense headaches of 3 months duration. Brain magnetic resonance imaging (MRI) was performed and showed a sellar-suprasellar lesion extending into the third ventricle. A presumptive diagnosis of a craniopharyngioma was made. Since the patient did not have any visual deficits, she opted for conservative management. Four months later, she started to have progressive deterioration of vision; thus, surgery was indicated. The patient underwent endoscopic endonasal resection of the lesion through a transtuberculum sellae approach...
April 2018: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/29588900/interhemispheric-translamina-terminalis-approach-for-the-resection-of-suprasellar-cavernous-malformation
#16
Georgios A Zenonos, Paul A Gardner
Objectives  The current video presents the nuances of an interhemispheric, translamina terminalis approach for the resection of suprasellar cavernous malformation. Design  The video analyzes the presentation, preoperative workup and imaging, surgical steps and technical nuances of the surgery, the clinical outcome, and follow-up imaging. Setting  The patient was treated by a skull base team at a teaching academic institution. Participants  The case refers to a 64-year-old female who presented with vision loss and confusion, and was found to have a suprasellar mass, with imaging characteristics consistent with a cavernous malformation of the third ventricle...
April 2018: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/29588890/endoscopic-transsphenoidal-salvage-surgery-for-symptomatic-residual-cystic-craniopharyngioma-after-radiotherapy
#17
Enzo Emanuelli, Giuliana Frasson, Diego Cazzador, Daniele Borsetto, Luca Denaro
Objectives  Ideal treatment of craniopharyngiomas is still controversial. Radiotherapy (RT) is considered effective for recurrences or after subtotal tumor removal (STR). About 40 to 50% of patients may experience tumor cyst expansion soon after RT; in these cases, the role of salvage surgery is debated. Design  Operative video. Setting  Tertiary care center. Participants  An 11-year-old boy diagnosed with persistent craniopharyngioma. In 2015, the patient underwent right frontotemporal craniotomy for STR at another center, complicated by panhypopituitarism...
April 2018: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/29588886/endoscopic-endonasal-transplanum-transtuberculum-approach-for-the-resection-of-a-large-suprasellar-craniopharyngioma
#18
João Mangussi-Gomes, Eduardo A Vellutini, Huy Q Truong, Felix H Pahl, Aldo C Stamm
Objectives  To demonstrate an endoscopic endonasal transplanum transtuberculum approach for the resection of a large suprasellar craniopharyngioma. Design  Single-case-based operative video. Setting  Tertiary center with dedicated skull base team. Participants  A 72-year-old male patient diagnosed with a suprasellar craniopharyngioma. Main Outcomes Measured  Surgical resection of the tumor and preservation of the normal surrounding neurovascular structures. Results  A 72-year-old male patient presented with a 1-year history of progressive bitemporal visual loss...
April 2018: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/29588882/endoscopic-endonasal-approach-for-a-suprasellar-craniopharyngioma
#19
Georgios A Zenonos, Carl H Snyderman, Paul A Gardner
Objectives  The current video presents the nuances of an endoscopic endonasal approach to a suprasellar craniopharyngioma. Design  The video analyzes the presentation, preoperative workup and imaging, surgical steps and technical nuances of the surgery, the clinical outcome, and follow-up imaging. Setting  The patient was treated by a skull base team consisting of a neurosurgeon and an ENT surgeon, at a teaching academic institution. Participants  The case refers to a 67-year-old man who presented with vision loss and headaches, and was found to have a suprasellar mass, with imaging characteristics consistent with a craniopharyngioma...
April 2018: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/29587795/clinical-outcome-after-particle-therapy-for-meningiomas-of-the-skull-base-toxicity-and-local-control-in-patients-treated-with-active-rasterscanning
#20
Rami A El Shafie, Maja Czech, Kerstin A Kessel, Daniel Habermehl, Dorothea Weber, Stefan Rieken, Nina Bougatf, Oliver Jäkel, Jürgen Debus, Stephanie E Combs
BACKGROUND: Meningiomas of the skull base account for 25-30% of all meningiomas. Due to the complex structure of the cranial base and its close proximity to critical structures, surgery is often associated with substantial morbidity. Treatment options include observation, aggressive surgical intervention, stereotactic or conventional radiotherapy. In this analysis we evaluate the outcome of 110 patients with meningiomas of the skull base treated with particle therapy. It was performed within the framework of the "clinical research group heavy ion therapy" and supported by the German Research Council (DFG, KFO 214)...
March 27, 2018: Radiation Oncology
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