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https://www.readbyqxmd.com/read/29775148/the-pterygoclival-ligament-a-novel-landmark-for-localization-of-the-internal-carotid-artery-during-the-endoscopic-endonasal-approach
#1
Ali Tayebi Meybodi, Andrew S Little, Vera Vigo, Arnau Benet, Sofia Kakaizada, Michael T Lawton
OBJECTIVE The transpterygoid extension of the endoscopic endonasal approach provides exposure of the petrous apex, Meckel's cave, paraclival area, and the infratemporal fossa. Safe and efficient localization of the lacerum segment of the internal carotid artery (ICA) is a crucial part of such exposure. The aim of this study is to introduce a novel landmark for localization of the lacerum ICA. METHODS Ten cadaveric heads were prepared for transnasal endoscopic dissection. The floor of the sphenoid sinus was drilled to expose an extension of the pharyngobasilar fascia between the sphenoid floor and the pterygoid process (the pterygoclival ligament)...
May 18, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29775030/-endoscopic-transnasal-approach-for-surgical-treatment-of-skull-base-clival-area-chordomas-report-of-2-cases
#2
J Ma, P Fang, D Wang, Y J Liu
The case 1 performanced submandibular trauma because of the faint Suddenly. There were no obvious abnormality in physical examination. CT result showed that the tumour located in the lower clivus, and the atlas was infringed. MRI imaging showed the tumour located in the both sides of the internal carotid artery, infringed clivus and atlas front, forwarded into the nasal cavity and oral cavity. The case 2 performanced the left nose stuffy and increased gradually, nasopharyngeal mirror showed the left nasal cavity filled with new life...
February 2018: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
https://www.readbyqxmd.com/read/29775009/-internal-carotid-artery-injury-during-endoscopic-endonasal-surgery-3-cases-report
#3
Z P Zhang, J P Yang, Y Zhao, J Z Cheng, K B Chen, S Li, Z G Wang
Three cases of internal carotid artery (ICA) injury during endoscopic endonasal surgery were analyzed, including 1 case of recurrent malignancy of sphenoid sinus, 1 case of intraorbital meningioma and 1 case of optic neuropathy. Salvage sphenoid sinus packing with gauze strip was managed in all the three cases. One patient operated a permanent closure of the carotid system intraoperatively and died after surgery. Among 2 survival cases, one patient accepted the endovascular embolization subsequently; the other patient was cured by intravaseular stent graft implantation without craniocerebral or ocular complicatitms...
June 5, 2017: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
https://www.readbyqxmd.com/read/29772400/neuro-endoscope-for-skull-base-tumors
#4
REVIEW
Hua Gao, Chunhui Liu, Yazhuo Zhang
The endoscope has traditionally been used in neurosurgery to access a lesion within a natural body cavity. The challenge has been to access and resect deep-seated intraparenchymal lesions using a minimally invasive endoscopic technique. Endoscopic endonasal trans-sphenoidal surgery has gained increasing acceptance by otolaryngologists and neurosurgeons. Surgical procedures of the skull base include exposure, resection, and base reconstruction. These approaches start at the sphenoid sinus, which provides a reference point to important vascular and neural structures...
May 14, 2018: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29771086/-design-of-cross-sectional-anatomical-model-focused-on-drainage-pathways-of-paranasal-sinuses
#5
Y Zha, W Lv, Y L Gao, Z Z Zhu, Z Q Gao
Objective: To design and produce cross-sectional anatomical models of paranasal sinuses for the purpose of demonstrating drainage pathways of each nasal sinus for the young doctors. Method: We reconstructed the three-dimensional model of sinuses area based on CT scan data, and divided it into 5 thick cross-sectional anatomy models by 4 coronal plane,which cross middle points of agger nasi cell, ethmoid bulla, posterior ethmoid sinuses and sphenoid sinus respectively. Then a 3D printerwas used to make anatomical cross-sectional anatomical models...
May 2018: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
https://www.readbyqxmd.com/read/29770286/resection-of-an-optic-canal-meningioma-through-a-contralateral-subfrontal-approach-with-endoscopic-assistance-a-2d-operative-video
#6
Moujahed Labidi, Kentaro Watanabe, Anne-Laure Bernat, Shunya Hanakita, Sébastien Froelich
Objective  To review the use of the contralateral subfrontal approach for the resection of an optic canal meningioma. Design  Operative video. Results  A meningioma, located in the inferomedial side of the optic canal ( Fig. 1 ), was found to cause significant visual deterioration. The subfrontal route was preferred to expose the tumor without mobilization of the optic nerve. Drilling of the anterior limb of the chiasmatic sulcus (limbus sphenoidale) provided adequate exposure of the medial aspect of the optic canal...
February 2018: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/29755916/a-case-of-sinonasal-undifferentiated-carcinoma-with-brain-metastases
#7
Julianna Sienna, Nhu-Tram Nguyen, Julie Arsenault, Ian Hodson, Brandon Meyers
Sinonasal undifferentiated carcinoma (SNUC) is a rare aggressive neoplasm arising in the nasal cavity and paranasal sinuses. We report a unique case of an 80-year-old man who presented with a locally advanced SNUC involving the ethmoid, sphenoid, and maxillary sinuses and bilateral lymph nodes, clinical T4N2M0. Given his age and the initial extent of his primary tumour, he was treated with neoadjuvant chemotherapy followed by chemoradiation with a split course of 50 Gray (Gy) in 40 fractions delivered twice a day...
March 13, 2018: Curēus
https://www.readbyqxmd.com/read/29755895/role-of-thermography-in-the-diagnosis-of-chronic-sinusitis
#8
Raja Kalaiarasi, Chellappa Vijayakumar, Ramalingam Archana, Ramakrishnan Venkataramanan, Ranganathan Chidambaram, Sadhanandham Shrinuvasan, Ravi Prabhu
Introduction Thermography is a form of radiography that images the skin surface temperature. Thermograms are pictorial representations of thermal maps of the entire body's outer surface. Thermography was applied as an attempt to evaluate its usefulness in the diagnosis of chronic sinusitis (CS). Hence, this study was done to determine the diagnostic value of thermography for patients suffering from CS. Methodology Patients attending the Department of Otorhinolaryngology and Head and Neck Surgery over a two years' duration with symptoms suggestive of CS were included in this diagnostic evaluation study...
March 10, 2018: Curēus
https://www.readbyqxmd.com/read/29730382/medical-imagery-isolated-abducens-palsy-due-to-acute-sphenoid-sinusitis
#9
Oscar H Del Brutto, Rafael Caputi
No abstract text is available yet for this article.
May 3, 2018: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/29730106/imaging-evaluation-of-the-location-and-fenestration-of-sellar-floor-during-endonasal-transsphenoidal-surgery-in-patients-with-pituitary-adenomas
#10
Shousen Wang, Yong Qin, Deyong Xiao, Zhifeng Wu, Liangfeng Wei
To evaluate the clinical value of three-dimensional (3D) CT reconstruction of the sphenoidal sinus separation in localizing sellar floor during endonasal transsphenoidal surgery, and determine the size and location of sellar floor fenestration. After exclusion,51 patients were eligible for study inclusion. A pre-operative CT scan of the paranasal sinus and CT scan and MRI of the pituitary gland were obtained. Sphenoidal sinus separation was reconstructed using Mimics 15.0 software and the quantity, shape, and orientation were observed and compared with intra-operative data, the purpose of which was to guide the localization of sellar floor...
May 3, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29729008/analysis-of-the-far-medial-transoral-endoscopic-approach-to-the-infratemporal-fossa
#11
Hafiz S Patwa, Juan C Yanez-Siller, Matias Gomez Galarce, Bradley A Otto, Daniel M Prevedello, Ricardo L Carrau
OBJECTIVES/HYPOTHESIS: To demonstrate anatomic relationships of the far-medial transoral endoscopic assisted approach (FMT-EAA) to the infratemporal fossa (ITF) and define the corridor dimensions, surgical freedom, and limitations associated with this approach. STUDY DESIGN: Cadaveric study. METHODS: Twenty ITFs (10 specimens) were dissected with the assistance of 0 °, 30 °, and 45 ° rod-lens endoscopes. Image guidance was used to confirm and measure the corridors' structural boundaries and document the anatomical relationships encountered in this approach...
May 4, 2018: Laryngoscope
https://www.readbyqxmd.com/read/29726777/surgical-outcomes-after-reoperation-for-recurrent-skull-base-meningiomas
#12
Stephen T Magill, David S Lee, Adam J Yen, Calixto-Hope G Lucas, David R Raleigh, Manish K Aghi, Philip V Theodosopoulos, Michael W McDermott
OBJECTIVE Skull base meningiomas are surgically challenging tumors due to the intricate skull base anatomy and the proximity of cranial nerves and critical cerebral vasculature. Many studies have reported outcomes after primary resection of skull base meningiomas; however, little is known about outcomes after reoperation for recurrent skull base meningiomas. Since reoperation is one treatment option for patients with recurrent meningioma, the authors sought to define the risk profile for reoperation of skull base meningiomas...
May 4, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29724144/arrested-pneumatization-of-the-sphenoid-sinus-mimicking-skull-base-tumors-mri-prevalence-in-children-with-haematologic-diseases
#13
Taner Arpaci
OBJECTIVE: Arrested pneumatization of the sphenoid sinus (APSS) is a developmental anatomic variation but may be confused with serious diseases of the skull base. The purpose of this study was to investigate the prevalence of APSS in pediatric patients with haemotologic diseases like sickle cell anemia (SCA), thalassemia and leukemia. MATERIALS AND METHODS: One hundred and eight pediatric patients (43 girl, 65 boy; age range, 4-18 years; median age, 13 years) with haemotologic diseases who underwent at least one magnetic resonance imaging (MRI) of the head and neck between 2010-2017 in a single instution were included...
May 3, 2018: International Journal of Neuroscience
https://www.readbyqxmd.com/read/29718332/endoscopic-endonasal-transmaxillary-transshpenoidal-approach-for-excision-of-a-superior-orbital-fissure-cavernous-sinus-meningioma-2-dimensional-operative-video
#14
Ehab El Refaee, Steffen Fleck, Marc Matthes, Henry W S Schroeder
We present a 43-old-male who suffered from a slowly progressive loss of vision in the left eye. Magnetic resonance (MR) imaging revealed a well-circumscribed contrast-enhancing lesion in the region of the anterior cavernous sinus and superior orbital fissure that extended into the optic canal. A schwannoma or meningioma was suspected. A transcranial surgery performed at another institution was not successful in removing the tumor and further deterioration of vision occurred. After resection of the left middle turbinate, the sphenoid and maxillary sinus were opened...
April 28, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29717544/impact-of-paranasal-sinus-invasion-on-advanced-nasopharyngeal-carcinoma-treated-with-intensity-modulated-radiation-therapy-the-validity-of-advanced-t-stage-of-ajcc-uicc-eighth-edition-staging-system
#15
Ying Wang, Jie Zhao, Yajie Zhao, Zhen Yang, Mingjun Lei, Zhanzhan Li, Rui Wei, Dengming Chen, Yuxiang He, Liangfang Shen
The aim of this study was to clarify the prognostic role of paranasal sinus invasion in advanced NPC patients. Data of patients (n = 295) with advanced NPC (T3/T4N0-3 M0) treated with intensity-modulated radiation therapy were retrospectively analyzed. Staging was according to the AJCC/UICC eighth edition staging system. Overall survival (OS), local recurrence-free survival (LRFS), distant metastasis-free survival (DMFS), and disease-free survival (DFS) were calculated, and differences were compared between patients with and without paranasal sinus invasion...
May 1, 2018: Cancer Medicine
https://www.readbyqxmd.com/read/29709753/endoscopic-endonasal-approach-to-the-anteromedial-temporal-fossa-and-mobilization-of-the-lateral-wall-of-the-cavernous-sinus-through-the-inferior-orbital-fissure-and-v1-v2-corridor-an-anatomical-study-and-clinical-considerations
#16
Shunya Hanakita, Wei-Chieh Chang, Kentaro Watanabe, Daniel Ronconi, Moujahed Labidi, Hun-Ho Park, Kenichi Oyama, Anne-Laure Bernat, Sebastien Froelich
OBJECTIVE: The aim of this study was to identify key anatomical landmarks useful in gaining access to the anteromedial temporal region via the corridor formed by the inferior orbital fissure (IOF), the ophthalmic branch (V1), and the maxillary branch (V2) of the trigeminal nerve via the EEA. METHODS: An anatomical dissection of six cadaver heads was performed to confirm the feasibility and applicability of the EEA for accessing the anteromedial temporal region. RESULTS: Following middle turbinectomy, the lateral recess of the sphenoid sinus was opened, the orbital apex exposed, and the posterior wall of the maxillary sinus was removed, in sequence...
April 27, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29688742/analysis-of-which-local-set-up-errors-can-be-covered-by-a-5-mm-margin-for-cone-beam-ct-guided-radiotherapy-for-nasopharyngeal-carcinoma
#17
Renming Zhong, Ying Song, Yuying Yan, Xuetao Wang, Shuai Li, Jidan Zhou, Xiaoyu Li, Sen Bai
OBJECTIVES: To analyse which local set-up errors can be covered by a 5 mm margin for cone-beam computed tomography (CBCT)-guided radiotherapy in nasopharyngeal carcinoma (NPC). METHODS: Eleven regions of interest (ROIs) were registered for 24 NPC patients, with a total of 323 CBCT scans. According to the registration results, clinical target volume-planning target volume (CTV-PTV)/organs at risk-planning risk volume (OAR-PRV) margin analysis; Pearson correlation analysis; Bland-Altman plots; and a receiver operating characteristic (ROC) analysis were used to investigate which local set-up errors of substructure can be represented by the PTVROI ...
April 24, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29685802/imaging-sphenoid-diseases
#18
REVIEW
J J Braun, C Debry, A Imperiale, S Riehm
In this review we provide comprehensive analysis of the imaging features of diseases affecting the sphenoid sinus, including a large and heterogeneous spectrum of pathologies such as sinusitis, pseudotumours, bony pathologies, and tumours. Clinical symptomatology related to sphenoid pathologies is often non-specific and patient clinical examination and endoscopic investigations are not definitive; thus, radiological imaging is mandatory for diagnosis. Strengths and limitations of both morphological and functional imaging methods such as computed tomography (CT), magnetic resonance imaging (MRI), and combined positron-emission tomography/computed tomography (PET/CT) have been considered and integrated into a well-defined clinical context in order to recognise specific imaging features and to underline their clinical relevance for an early and accurate diagnosis...
April 20, 2018: Clinical Radiology
https://www.readbyqxmd.com/read/29682061/transcranial-and-epidural-approach-for-spontaneous-cerebrospinal-fluid-leakage-due-to-meningoencephalocele-of-the-lateral-sphenoid-sinus
#19
Ryosuke Shintoku, Masahiko Tosaka, Tatsuya Shimizu, Yuhei Yoshimoto
We experienced a case of sphenoid sinus type meningoencephalocele manifesting as severe cerebrospinal fluid (CSF) rhinorrhea. A 35-year-old man became aware of serous nasal discharge 1 year previously, which had gradually worsened. The nasal discharge was diagnosed as CSF rhinorrhea. Head computed tomography (CT) showed several small depressions in the bone of the left middle cranial fossa, and the largest depression extended through the bone to the lateral sphenoid sinus. Head magnetic resonance imaging revealed that the meningoencephalocele projected to the lateral sphenoid sinus, through this small bone defect of the middle cranial fossa...
April 2018: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/29682049/primary-extradural-meningioma-of-posterior-fossa-associated-with-acquired-chiari-malformation-a-short-review
#20
Guru Dutta Satyarthee
Generally, meningioma is considered intracranial lesion occurring in the intradural compartment. However, meningioma can also occur and usually confined in the extradural compartment called as primary extradural meningioma (PEM). PEM represents a special subgroup of meningioma constitute about 1% of all meningioma. PEM arises outside the subdural compartment and usually contains neither connection underlying subdural structures nor extends into with subdural compartment. It is commonly located in the paranasal sinus, middle ear, rarely in the intradiploic spaces of calvarial bone such as temporal, frontal, and parietal bone and orbit but extremely uncommonly in the occipital and sphenoid bones...
April 2018: Asian Journal of Neurosurgery
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