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Sphenoid sinus

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https://www.readbyqxmd.com/read/28341352/volumetric-analysis-of-the-maxillary-sphenoid-and-frontal-sinuses-a-comparative-computerized-tomography-based-study
#1
Oded Cohen, Meir Warman, Moran Fried, Hagit Shoffel-Havakuk, Meital Adi, Doron Halperin, Yonatan Lahav
OBJECTIVE: To study volume characteristics of the maxillary, sphenoid and frontal sinuses among healthy Caucasians adults, using computed tomography (CT) scans. METHODS: A retrospective, case series study in a single academic center, CT scans of 201 consecutive adult subjects, performed between January and September 2014, were reviewed for the volume and dimensions of the paranasal sinuses. Patients with documented sinus pathology or lack of pneumatization were excluded...
March 21, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28321383/direct-endonasal-approach-with-partial-upper-posterior-septectomy-a-rescue-flap-technique-modification
#2
Arturo Sotomayor-González, Armando José Díaz-Martínez, Ramón Radillo-Gil, Everardo García-Estrada, Jesús Alberto Morales-Gómez, Isaac Jair Palacios-Ortiz, Samuel Pérez-Cárdenas, Mauricio Arteaga-Treviño, Ángel Martínez-Ponce De León
Objective Report a modification of the "rescue flap" technique using a direct endonasal approach with a partial superior septectomy for approaching pituitary tumors developed in our institution. Design Prospective study. Setting Hospital Universitario "Dr. José Eleuterio González," Universidad Autónoma de Nuevo León. Main Outcome Measures Since April 2015, we have performed 19 cases employing a direct endonasal approach with partial superior septectomy. Results and a technical note are described below...
April 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28321379/differentiation-between-posterior-sinuses-using-the-medial-orbital-floor-as-a-landmark
#3
Camila Degen Meotti, Otávio Bejzman Piltcher, Bruno Netto, Jaqueline Lemieszek, Michelle Lavinsky-Wolff, Felipe Marques do Rego Monteiro, Gustavo Rassier Isolan
Objectives This study aims to evaluate the difference in height between the floors of the posterior ethmoid and sphenoid sinuses with respect to the medial orbital floor (MOF) to confirm this difference as a landmark for identification of the posterior sinuses. It also aims to describe this difference regarding the type of pneumatization of the sphenoid sinus (conchal, presellar, and sellar). Design A cross-sectional study was conducted. Study Center The study was conducted at the Department of Radiology of Hospital de Clínicas de Porto Alegre, a tertiary care university hospital in Southern Brazil...
April 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28321374/ectopic-pituitary-adenomas-presenting-as-sphenoid-or-clival-lesions-case-series-and-management-recommendations
#4
Bobby A Tajudeen, Edward C Kuan, Nithin D Adappa, Joseph K Han, Rakesh K Chandra, James N Palmer, David W Kennedy, Marilene B Wang, Jeffrey D Suh
Background An ectopic pituitary adenoma presenting as a clival or sphenoid mass is a rare clinical occurrence that may mislead the clinician and result in unnecessary interventions or potential medicolegal consequences. Here, we present one of the largest multi-institutional case series and review the literature with an emphasis on radiological findings and critical preoperative workup. Methods Retrospective chart review. Results Nine patients were identified with ectopic pituitary adenomas of the sphenoid or clivus...
April 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28321371/anatomic-variations-in-pituitary-endocrinopathies-implications-for-the-surgical-corridor
#5
Edward C Kuan, Frederick Yoo, Won Kim, Karam W Badran, Thomas E Heineman, Ali R Sepahdari, Marvin Bergsneider, Marilene B Wang
Objectives/Hypotheses Functioning pituitary adenomas may produce endocrinopathies such as acromegaly and Cushing syndrome. Both conditions lead to characteristic anatomic variations as a result of hormonally induced abnormal soft tissue deposition. We evaluate the anatomic differences between acromegalics and Cushing disease patients and compare these dimensions to controls. Design Radiographic review of preoperative magnetic resonance images (MRI) of the pituitary gland. Setting Tertiary academic medical center...
April 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28293965/endoscopic-approach-for-a-delayed-post-traumatic-ethmoidal-mucocele-a-technical-note
#6
Mahmoud Messerer, Giulia Cossu, Roy Thomas Daniel
OBJECTIVE: Delayed post-traumatic mucoceles are rare. We describe the surgical treatment of a post-traumatic ethmoidal mucocele with intra-orbital extension. METHOD: A uninostril endoscopic endonasal approach (EEA) was performed. The access was contralateral to the lesion to provide a wider lateral view. After a large sphenoid and ethmoid sinuses opening, the collection was drained and the optic nerve precociously identified. The orbital roof was eroded and the frontal dura mater directly visible...
March 15, 2017: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/28289870/the-effects-of-choanal-atresia-on-development-of-the-paranasal-sinuses-and-turbinates
#7
Suat Terzi, Engin Dursun, Fatma Beyazal Çeliker, Metin Çeliker, Mehmet Beyazal, Abdulkadir Özgür, Emel Çadallı Tatar, Mehmet Hakan Korkmaz
PURPOSE: The objective of this study was to evaluate the volume of paranasal sinuses (PNS) and turbinate in patients with unilateral choanal atresia (CA). MATERIALS AND METHOD: Computed tomography images of PNS in 11 individuals with unilateral CA were evaluated retrospectively. Mucosal thickness and volume of the maxillary, frontal and sphenoidal sinuses were determined, in addition to the volume of the middle and inferior turbinate. The unaffected nasal side of patients was used as a control group for the measurements...
March 13, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28263215/pituitary-adenoma-recurrence-suspected-on-central-hyperthyroidism-despite-empty-sella-and-confirmed-by-68-ga-dota-toc-pet-ct
#8
Mathieu Gauthé, Julie Sarfati, Nathalie Bourcigaux, Sophie Christin-Maitre, Jean-Noël Talbot, Françoise Montravers
Thyrotropin-secreting pituitary adenomas are very rare tumors, known to present overexpression of somatostatin receptor subtype 2 and which may consequently demonstrate abnormal uptake on Ga-DOTA-TOC PET/CT. A 67-year-old woman with a history of operated pituitary macroadenoma presented with symptoms of hyperthyroidism including a large goiter. Her serum thyroid hormone levels were in favor of central hyperthyroidism. Pituitary MRI depicted an empty sella but visualized an ambiguous lesion centered on the left sphenoidal sinus...
March 3, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28260644/diagnosis-of-drowning-electrolytes-and-total-protein-in-sphenoid-sinus-liquid
#9
Akira Hayakawa, Koichi Terazawa, Kotaro Matoba, Kie Horioka, Tatsushige Fukunaga
In this study, electrolyte (sodium (Na), chlorine (Cl), and magnesium (Mg)) and total protein (TP) concentrations and volume of liquid in the sphenoid sinus were examined to determine their usefulness to elucidate whether drowning occurred in freshwater or seawater. We examined 68 cases (seawater drowning group: 27 cases, freshwater drowning group: 21 cases, non-drowning group: 20 cases). There was a significant difference in Na, Cl, Mg, and TP concentrations of liquid in the sphenoid sinus among the three groups (seawater drowning, freshwater drowning, and non-drowning groups)...
February 24, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28255144/a-rare-case-of-large-sphenoethmoidal-osteoma
#10
Z Nazli, A W Abdul Fattah
Osteoma is the most common benign tumour of the nose and paranasal sinuses. However, involvement of the sphenoid sinus by osteoma is rare. Most of the time, patients with paranasal sinus osteoma are asymptomatic. However, symptoms may present, depending on the location and extension of the tumour. We report a case of a patient with sphenoethmoidal osteoma found incidentally on imaging, with evidence of impingement onto the optic nerve at the optic canal. However, the patient was asymptomatic. He was surgically treated using the endoscopic transnasal approach...
February 2017: Medical Journal of Malaysia
https://www.readbyqxmd.com/read/28251318/isolated-sphenoid-sinus-fungus-ball-a-retrospective-study-conducted-at-a-tertiary-care-referral-center-in-korea
#11
Hyun-Sil Lim, Young Hoon Yoon, Jun Xu, Yong Min Kim, Ki-Sang Rha
Fungus ball (FB) is the most common form of extramucosal fungal rhinosinusitis involving one or more paranasal sinuses. The sphenoid sinus is an uncommon site of this disease. Here, we present our 20-year experience of managing isolated sphenoid sinus FB (SSFB). We retrospectively reviewed a series of 47 cases of isolated SSFB encountered between 1996 and 2015 with reference to the chronological incidence, demographics, clinical features, radiological findings, treatment modalities, and outcome. Recently, the number of patients with isolated SSFB has increased markedly...
March 1, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28239593/ectopic-esthesioneuroblastoma-of-the-sphenoclivus-a-rare-entity
#12
Farah Dayana Zahedi, Balwant Singh Gendeh, Salina Husain, Ramesh Kumar, Thean Yean Kew
Esthesioneuroblastoma is a rare malignant neoplasm of oflactory neuroepithelium and usually located at the olfactory cleft at superior nasal cavity. Ectopic localization of esthesioneuroblastoma is even rarer and usually posed with a diagnostic dilemma and delay in the diagnosis and management, We report a rare case of ectopic esthesioneuroblastoma of the sphenoclivus with the presentation of intermittent unilateral epistaxis, intermittent intractable headache without anosmia. Nasal endoscopy findings showed a pulsatile mass at the anterior face of the sphenoid sinus with extension posteriorly towards the clivus region and occupying the floor of the sphenoid sinus...
March 2017: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/28230588/how-to-expose-the-entire-sella-floor-with-minimal-manipulation-during-an-endoscopic-endonasal-transsphenoidal-approach
#13
Do Hyun Kim, Yong-Kil Hong, Sin-Soo Jeun, Yong Jin Park, Soo Whan Kim, Jin Hee Cho, Boo-Young Kim, Sung Won Kim
OBJECTIVE: A method of opening the posterior ethmoid air cells with minimal manipulation is important for adequate exposure of the sella floor and minimal nasal morbidity. METHODS: Between February 2009 and August 2016, 373 patients with skull-base tumors underwent surgery via endoscopic endonasal transsphenoidal approach with the 2-nostrils/4-hands technique using this technique. RESULTS: A linear incision was made laterally toward one-third of the superior turbinate along the superior border of the sphenoid sinus ostium...
February 22, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28229571/transnasal-transsphenoidal-brain-injury-by-a-fencing-foil-an-unusual-case-report-and-brief-literature-review
#14
Rafet Özay, Mehmet S Balkan, Çağhan Tönge, Zeki Şekerci
BACKGROUND: In this report, the authors present an unusual case of a 10-year-old child who suffered a severe headache and rhinorrhea that occurred as a result of fencing foil sports injury via transnasal-transsphenoidal (TNTS) pathway. METHODS: Following to trauma, the child had shown neurological symptoms such a pupil dilatation, change in consciousness and mild hemiparesia. Imaging demonstrated destruction of bone structures including posterior wall of sphenoid sinus and anterosuperior part of sella turcica, and also a contusion at right thalamic region...
February 22, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28214636/a-case-of-evolving-bilateral-sphenoidal-meningoencephalocoeles-case-report-and-review-of-literature
#15
Varun Aggarwal, Pankaj Shivhare, E R Jayadevan, Vinod Felix, Mathew Abraham, Suresh Nair, Prakash Nair
The evolution of sphenoid sinus meningoencephalocoeles and cerebrospinal fluid (CSF) rhinorrhoea is poorly understood. We present a case demonstrating the gradual evolution of encephalocoeles from both the lateral walls of a previously normal sphenoid sinus in a patient with dural arteriovenous fistula (DAVF), the CSF leak which developed following staged embolisation of the DAVF was managed by an endoscopic endonasal transpterygoid approach. Our findings suggest that over a period of time, chronic elevation of intracranial pressure (ICP) results in gradual erosion of the lateral wall of the sphenoid with development of meningoencephalocoeles and CSF leaks...
February 15, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28202381/sphenoid-sinus-carcinoid-tumour-causing-ectopic-acth-syndrome
#16
Sanjaya Perera, Ahmad Taha
A thirty-eight year old patient presented with a gradual increase in weight and Cushingoid facies of two years duration. He also had orbital congestion, with puffy eyelids and corkscrew conjunctival vessels, associated with painful eye movements. An endocrine evaluation revealed raised cortisol and ACTH. Head imaging was performed which showed an enhancing tumour arising from the sphenoid sinus, with osseous erosion of the sphenoid sinus, extending to the nasopharynx, sellar and a small amount extending intracranially...
February 12, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28192871/sinus-septi-nasi-anatomical-study
#17
Ranko Mladina, Romano Antunović, Cemal Cingi, Nuray Bayar Muluk, Neven Skitarelić
The aim of this study was to perform a pioneering investigation into the incidence of pneumatization in human skulls. A total of 93 human skulls (≥20 years of age, 69 males, 24 females) were included in the study. The skulls were scanned in a fixed position using cone beam computed tomography (CBCT). The pneumatized space parameters within the nasal septum-width, length, and height-were measured. Two types of finding were identified: (a) Pneumatization, named "sinus septi nasi" (SSN), and (b) "spongy bone" (SB)...
April 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28180051/region-specific-objective-signatures-of-endoscopic-surgical-instrument-motion-a-cadaveric-exploratory-analysis
#18
R Alex Harbison, Angelique M Berens, Yangming Li, Randall A Bly, Blake Hannaford, Kris S Moe
Objectives The objective of this study was to evaluate region-specific surgical instrument kinematics among novice and experienced surgeons performing endoscopic endonasal skull base surgery. Design Cadaveric experimental study. Setting Tertiary academic center. Participants Two novice and two experienced surgeons performed eight endoscopic total ethmoidectomies and sphenoidotomies using an optically tracked microdebrider. Main Outcome Measures Time-stamped Euclidian coordinates were recorded. Cumulative instrument travel, mean linear velocity and acceleration, and mean angular velocities were calculated in the anterior ethmoid, posterior ethmoid, and sphenoid sinus regions...
February 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28180047/the-pedicled-buccal-fat-pad-anatomical-study-of-the-new-flap-for-skull-base-defect-reconstruction-after-endoscopic-endonasal-transpterygoid-surgery
#19
Denis A Golbin, Nikolay V Lasunin, Vasily A Cherekaev, Georgiy A Polev
Objectives To evaluate the efficacy and safety of using a buccal fat pad for endoscopic skull base defect reconstruction. Design Descriptive anatomical study with an illustrative case presentation. Setting Anatomical study was performed on 12 fresh human cadaver specimens with injected arteries (24 sides). Internal carotid artery was exposed in the coronal plane via the endoscopic transpterygoid approach. The pedicled buccal fat pad was used for reconstruction. Participants: 12 human cadaver head specimens; one patient operated using the proposed technique...
February 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28163275/blindness-associated-with-nasal-paranasal-lymphoma-in-a-stallion
#20
Yuto Sano, Minoru Okamoto, Youhei Ootsuka, Kazuya Matsuda, Shigeki Yusa, Hiroyuki Taniyama
A 29-year-old stallion presented with bilateral blindness following the chronic purulent nasal drainage. The mass occupied the right caudal nasal cavity and right paranasal sinuses including maxillary, palatine and sphenoidal sinuses, and the right-side turbinal and paranasal septal bones, and cribriform plate of ethmoid bone were destructively replaced by the mass growth. The right optic nerve was invaded and involved by the mass, and the left optic nerve and optic chiasm were compressed by the mass which was extended and invaded the skull base...
February 5, 2017: Journal of Veterinary Medical Science
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