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https://www.readbyqxmd.com/read/28614638/development-and-validation-of-a-3d-printed-model-of-the-ostiomeatal-complex-and-frontal-sinus-for-endoscopic-sinus-surgery-training
#1
Abdulaziz S Alrasheed, Lily H P Nguyen, Luc Mongeau, W Robert J Funnell, Marc A Tewfik
BACKGROUND: Endoscopic sinus surgery poses unique training challenges due to complex and variable anatomy, and the risk of major complications. We sought to create and provide validity evidence for a novel 3D-printed simulator of the nose and paranasal sinuses. METHODS: Sinonasal computed tomography (CT) images of a patient were imported into 3D visualization software. Segmentation of bony and soft tissue structures was then performed. The model was printed using simulated bone and soft tissue materials...
June 14, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/28582957/a-case-of-organizing-hematoma-in-a-maxillary-sinus-after-reconstruction-of-a-blow-out-fracture
#2
Sang Hee An, Hyoung Min Park, Il Gyu Kang, Joo Hyun Jung
A 36-year-old man presented because of nasal obstruction, rhinorrhea, and postnasal drip. The patient had undergone reconstruction of a blow-out fracture of the orbital floor 12 years before and had sinusitis that likely had resulted from implant migration into the maxillary sinus. The inflammation was successfully resolved, and the implant was removed through a minimally invasive endoscopic sinus surgery technique. On pathologic examination, an organizing hematoma was identified as the cause of the lesion...
June 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28541246/correlation-between-the-extent-of-pneumatization-of-agger-agger-nasi-nasi-cells-and-the-anterior-to-posterior-length-of-the-frontal-recess-a-a-computer-assisted-anatomical-study
#3
Ahmet Altıntaş, Mustafa Çelik, Yakup Yegin, Sinan Canpolat, Burak Olgun, Fatma Tülin Kayhan
OBJECTIVES: To explore the correlation between the volume of the aAgger nNasi (AN) cell bulge and the A-P length of the frontal recess (FR). SUBJECTS AND METHODS: In total, 120 patients, who underwent septoplasty, were included. All patients underwent preoperative paranasal sinus computed tomography of the paranasal sinuses (PNS CT) imaging. In total, CT data on of all 120 PNSs patients were analyzed in terms of thewith respect to the extent of pneumatization of the AN cell bulge and the A-P dimensions of the FR...
June 30, 2017: Otolaryngologia Polska
https://www.readbyqxmd.com/read/28523041/functional-endoscopic-sinus-surgery-as-a-primary-modality-of-treatment-for-primary-and-recurrent-nasal-polyposis
#4
Mohammad Shahid Gohar, Saleem Asif Niazi, Sohail Baber Niazi
OBJECTIVES: To describe the efficacy of Functional Endoscopic Sinus Surgery(FESS) in our set up in comparison with other published studies to treat primary and recurrent nasal polyposis. METHOD: This descriptive study was conducted in 02 years at Ear Nose Throat Department Combined Military Hospital (CMH) Multan from October 2013 to October 2015. Convenient sample comprising 116 patients of both sexes of age group from 18 to 60 years were selected from ENT Out Patient Department, with documented diagnosis of nasal polyposis that underwent functional endoscopic sinus surgery...
March 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/28470359/is-endoscopic-endonasal-transsphenoidal-surgery-increases-the-susceptibility-to-rhinosinusitis
#5
Muhammet Fatih Topuz, Murat Sarı, Adem Binnetoglu, Ramazan Dogrul, Onur Bugdaycı, Aşkın Şeker
The aim of the study was to analyze whether the measurement of changes in the anatomical position and volume of middle concha, the volume changes in the area between the middle concha and lamina papyracea, the evaluation of opacification in major paranasal sinuses, and osteomeatal complex occlusion in cases with middle concha by out-fracture technique during endoscopic endonasal transsphenoidal approach is a minimally invasive surgery, and also to find out whether these changes lead to the development of tendency to rhinosinusitis...
May 3, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28439612/-imaging-of-the-paranasal-sinuses-and-anterior-skull-base
#6
S Greschus, F Albert, K W G Eichhorn
Due to the complex anatomy of the anterior skull base and paranasal sinuses, radiologic diagnostics in this area are challenging. Magnetic resonance imaging (MRI) and computed tomography (CT) are the primary indicated modalities. Guidelines helping to select the appropriate modality have been published by the German Society of Head and Neck Radiology and the Society of Otorhinolaryngology. The present article presents an overview of the current radiologic procedures and their optimized implementation using clinical examples...
April 21, 2017: HNO
https://www.readbyqxmd.com/read/28255303/reduction-of-radiation-dosage-in-visualization-of-paranasal-sinuses-in-daily-routine
#7
Christian Güldner, Isabell Diogo, Julia Leicht, Magis Mandapathil, Thomas Wilhelm, Afshin Teymoortash, Evelyn Jahns
Background. Preoperative imaging of the nose and paranasal sinus is standard in otorhinolaryngology. Previous studies on phantoms demonstrated the potential for dose reduction of cone beam computed tomography (CBCT) by varying the application parameters. Methodology. Based on previous studies, the standard protocol of paranasal sinus imaging by CBCT was altered. One hundred and fifty examinations using the old protocol (01/2010-01/2011, high dosage) and 150 examinations using the new protocol (09/2012-09/2013, low dosage) were evaluated and compared for the visibility of 17 anatomical structures, the Lund-Mackay Score, and technical parameters...
2017: International Journal of Otolaryngology
https://www.readbyqxmd.com/read/28212125/functional-endoscopic-surgery-after-facial-trauma
#8
Marzia Petrocelli, Carolina Sbordone, Giovanni Salzano, Francesco Maria Cassandro, Giuseppe Chiarella, Alfonso Scarpa, Antonio Romano, Giorgio Iaconetta, Luigi Califano, Ettore Cassandro
The present study describes 3 patients of previous facial trauma who have subsequently been treated with functional endoscopic sinus surgery. The authors want pay attention on the possible correlation between facial trauma and sinusitis. Such fractures can be the cause of onset of paranasal sinusitis or of worsening of a previous sinusitis. The correlation between these 2 pathologies could be due to the fact that facial fractures concern the anatomic structures of paranasal sinuses. The damage to these structures during the facial trauma and tissue regeneration after injury or surgical treatment subverts the anatomy and function of the sinuses in a basically compromised situation...
June 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27966111/concha-bullosa-in-paleoanthropological-material
#9
Aleksandra Gawlikowska-Sroka, J Szczurowski, B Kwiatkowska, P Konczewski, E Dzieciołowska-Baran, M Donotek, A Walecka, D Nowakowski
Concha bullosa is a variant of the sinonasal anatomy in which the middle nasal turbinate contains pneumatized cells, which leads to turbinate enlargement. The reason for concha bullosa formation is unclear, but the variant is seen in up to half the modern population and it may predispose to paranasal sinusitis. The variant has hitherto featured little in paleopathology. Therefore, in the present study we seek to determine the presence of concha bullosa, with the coexisting hypertrophy of the middle turbinate and signs of sinusitis or other pathology of the paranasal complex, in a population living in Tomersdorf-Toporow in the Upper Lausatia, a historical region in Germany and Poland, presently Zgorzelec County in the Lower Silesian voivodeship, at the turn of the nineteenth and twentieth century...
December 14, 2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27906848/calculation-of-an-optic-nerve-injury-risk-profile-before-sphenoid-sinus-surgery
#10
Erdem Atalay Cetinkaya, Koray Koc, Mehmet Fatih Kucuk, Pinar Koc, Nuray Bayar Muluk, Cemal Cingi
OBJECTIVES: Our objective was to analyze variations in the optic nerve (ON) course and surrounding structures in an effort to construct an optic nerve injury risk profile before endoscopic intranasal sphenoidal, or endoscopic endonasal transphenoidal, skull-base surgery, and eventually to construct and formulate a common classification by combining the known classes. The authors used computed tomography (CT) toward this end. METHODS: The authors retrospectively reviewed 200 consecutive CT scans (400 sides) of the paranasal sinuses...
January 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27890187/imaging-of-paranasal-sinuses-and-anterior-skull-base-and-relevant-anatomic-variations
#11
REVIEW
Estushi Iida, Yoshimi Anzai
This article reviews the normal anatomy and variants of the anterior skull base and sinonasal cavities that are relevant to endoscopic sinus and skull base surgery. Radiologists should be aware of sinonasal anatomy that can be impediments to surgical access and increase risk of vascular or cranial nerve injury during surgery. Imaging features of the paranasal sinuses and anterior skull base pathologies are also discussed.
January 2017: Radiologic Clinics of North America
https://www.readbyqxmd.com/read/27754596/educational-utility-of-advanced-three-dimensional-virtual-imaging-in-evaluating-the-anatomical-configuration-of-the-frontal-recess
#12
Abib Agbetoba, Amber Luong, Jin Keat Siow, Brent Senior, Claudio Callejas, Kornel Szczygielski, Martin J Citardi
BACKGROUND: Endoscopic sinus surgery represents a cornerstone in the professional development of otorhinolaryngology trainees. Mastery of these surgical skills requires an understanding of paranasal sinus and skull-base anatomy. The frontal sinus is associated with a wide range of variation and complex anatomical configuration, and thus represents an important challenge for all trainees performing endoscopic sinus surgery. METHODS: Forty-five otorhinolaryngology trainees and 20 medical school students from 5 academic institutions were enrolled and randomized into 1 of 2 groups...
February 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/27752754/visualization-of-anatomy-in-normal-and-pathologic-middle-ears-by-cone-beam-ct
#13
Christian Güldner, Isabell Diogo, Eva Bernd, Stephanie Dräger, Magis Mandapathil, Afshin Teymoortash, Hesham Negm, Thomas Wilhelm
Cone beam computed tomography (CBCT, syn. digital volume tomography = DVT) was introduced into ENT imaging more than 10 years ago. The main focus was on imaging of the paranasal sinuses and traumatology of the mid face. In recent years, it has also been used in imaging of chronic ear diseases (especially in visualizing middle and inner ear implants), but an exact description of the advantages and limitations of visualizing precise anatomy in a relevant number of patients is still missing. The data sets of CBCT imaging of the middle and inner ear of 204 patients were analyzed regarding the visualization of 18 different anatomic structures...
February 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/27712907/classic-signs-in-head-and-neck-imaging
#14
REVIEW
N A Koontz, T A Seltman, S F Kralik, K M Mosier, H R Harnsberger
Radiologists have long relied upon the use of metaphoric imaging signs to attribute meaning to disease or anatomy-specific imaging patterns encountered in clinical imaging. Teachers of radiology often employ the use of such signs to help learners rapidly identify the typical appearance of various pathologies. Head and neck (H&N) imaging is no exception, and as a specialty that deals with uncommon pathologies and complex anatomy, learners and practising radiologists alike may benefit from this simplistic, pattern-based approach...
December 2016: Clinical Radiology
https://www.readbyqxmd.com/read/27614624/concha-bullosa-in-paleoanthropological-material
#15
A Gawlikowska-Sroka, J Szczurowski, B Kwiatkowska, P Konczewski, E Dzieciołowska-Baran, M Donotek, A Walecka, D Nowakowski
Concha bullosa is a variant of the sinonasal anatomy in which the middle nasal turbinate contains pneumatized cells, which leads to turbinate enlargement. The reason for concha bullosa formation is unclear, but the variant is seen in up to half the modern population and it may predispose to paranasal sinusitis. The variant has hitherto featured little in paleopathology. Therefore, in the present study we seek to determine the presence of concha bullosa, with the coexisting hypertrophy of the middle turbinate and signs of sinusitis or other pathology of the paranasal complex, in a population living in Tomersdorf-Toporow in the Upper Lausatia, a historical region in Germany and Poland, presently Zgorzelec County in the Lower Silesian voivodeship, at the turn of the nineteenth and twentieth century...
September 11, 2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27466853/delivery-of-topical-therapies
#16
REVIEW
Kristine A Smith, Luke Rudmik
Chronic rhinosinusitis with nasal polyposis (CRSwNP) is an inflammatory disease of the sinonasal passages. Similar to other chronic inflammatory diseases, an essential component of the long-term control is prolonged medical therapy. To minimize the risk of adverse effects and cumulative complications of systemic medications, topical sinonasal therapy has become the primary strategy for prolonged medical therapy. The objective of this review article is to describe the evidence for the most common topical sinonasal delivery techniques...
2016: Advances in Oto-rhino-laryngology
https://www.readbyqxmd.com/read/27300298/is-there-a-relationship-between-sphenoid-sinus-types-septation-and-symmetry-and-septal-deviation
#17
Mehmet Hüseyin Akgül, Nuray Bayar Muluk, Veysel Burulday, Ahmet Kaya
In the present study, we investigated whether there is a relationship between sphenoid sinus (SS) types, septation (lobulation) and symmetry; and septal deviation (SD) by multidetector computed tomography (MDCT). Paranasal MDCT images of 202 subjects (131 males, 71 females), between 10- and 88-year-old, were included into the study. SS type (conchal, presellar or sellar), SS symmetry, SS septation (lobulation) and SD were evaluated by MDCT images. In the present study, in both males (83.2 %) and females (85...
December 2016: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/27239601/combined-external-and-endonasal-approach-to-fronto-ethmoidal-mucocele-involving-the-orbit
#18
Bijan Beigi, Deepak Vayalambrone, Mohsen Bahmani Kashkouli, Peter Prinsley, Jan Saada
PURPOSE: To present a technique to improve the surgical treatment of frontal sinus mucocele and its recurrence. METHODS: Nine procedures performed on eight patients by a team of ENT and Ophthalmic orbital surgeons. Data collected included patient demographics, surgical details, pathological findings and complications. The surgical technique involved an external approach via the upper eyelid skin crease combined with an internal approach with a rigid 4 mm endoscope described below...
March 2016: Journal of Current Ophthalmology
https://www.readbyqxmd.com/read/27192983/usefulness-of-three-dimensional-computed-tomographic-anatomy-in-endoscopic-frontal-recess-surgery
#19
Paolo Farneti, Anna Riboldi, Vittorio Sciarretta, Ottavio Piccin, Paolo Tarchini, Ernesto Pasquini
PURPOSE: The endoscopic bidimensional vision offered by the endoscope during endoscopic sinus surgery involves difficulty in visualizing surgical field depth which makes it difficult to learn this surgical technique and makes it necessary for the endoscopic surgeon to mentally create a three-dimensional (3D) picture of the paranasal sinuses anatomy. In particular, frontal recess surgery requires good knowledge of its anatomic position, also since it is necessary to use angled endoscopes, which distort the view, and angular instruments which are difficult to use...
February 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/27178523/ex-vivo-ovine-model-for-head-and-neck-surgical-simulation
#20
David C Ianacone, Beverly J Gnadt, Glenn Isaacson
OBJECTIVE: To evaluate a fresh, ovine/sheep head and neck tissue model to teach otolaryngology-head and neck surgical techniques. STUDY DESIGN: Observational animal study. SETTING: A university animal resource facility. METHODS: Tissue was collected from pre-pubescent sheep (n=10; mean age: 4months; mean mass: 28kg) following humane euthanasia at the end of an in vivo protocol. No live animals were used in this study...
May 2016: American Journal of Otolaryngology
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