D S Gu, P Z Li, L S Ding, X Y Sun
Objective: To evaluate the value of Hadad-Bassagasteguy flap (HBF) in endoscopic endonasal approaches (EEA) skull base reconstruction by radioanatomic measurements on CT of the skull base of Chinese adults. The following data in terms of anterior skull base defect and reconstruction, sphenoid platform area and middle skull base defect and reconstruction including sphenoid platform and sella area, clivus area defect and reconstruction, and HBF were collected and assessed. Methods: CT image data of 42 Chinese adults were selected to obtain radioanatomic measurement data related to HBF, anterior skull base defect and reconstruction, middle skull base defect and reconstruction, and defect and reconstruction of clivus area...
January 7, 2021: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
Asaad Abd Al-Hussain Mohammad Al-Shouk, İlkan Tatar
The blood supply of the lateral nasal wall acquires a great deal of interest for many reasons especially for the treatment of clinical conditions such as epistaxis that sometimes needs surgical interventions and endoscopic sinus and skull base surgeries that requires a good choice of endonasal flaps including inferior nasal concha (commonly named as inferior turbinate by clinicians) flap to close the dural defects. Successful treatment of epistaxis and closure of such defects depends on detailed anatomical knowledge of lateral nasal wall vasculature and a vital flap with good blood supply, respectively...
June 8, 2020: Anatomical Science International
Wirach Chitsuthipakorn, Kachorn Seresirikachorn, Dichapong Kanjanawasee, Kornkiat Snidvongs
PURPOSE: Endoscopic sphenopalatine artery ligation (ESPAL) is known as an effective treatment for posterior epistaxis. Anatomical variations of the intranasal branching may result in long operative time and possible inadequate cauterization. A modification of ESPAL by cauterization at the sphenopalatine foramen (SPF), has been performed by our group. Our study assessed the clinical benefit of endoscopic sphenopalatine foramen cauterization (ESFC) and compared it to ESPAL. METHOD: A retrospective study was conducted...
September 2020: European Archives of Oto-rhino-laryngology
Sagar Maheshwari, Monica Patil, Shweta Shendey
Mucormycosis is a rare opportunistic fungal infection, often life-threatening. We report an unusual case of rhinocerebral mucormycosis in an immunocompetent patient. A 23-year-old male presented with headache, speech disturbance and hearing difficulty for 4 weeks. Magnetic resonance imaging (MRI) revealed right cerebellar abscess and enhancing soft tissue in the nasal cavity, extending to cranial and infratemporal fossae. Computed tomography (CT) revealed the widening of foramen rotundum and sclerosis involving the sphenoid and ethmoid sinuses...
October 2019: Journal of Radiology Case Reports
Harrison M Thompson, Rodney J Schlosser, Erika McCarty Walsh, Do-Yeon Cho, Jessica W Grayson, Thomas T Karnezis, Peter L Miller, Bradford A Woodworth
OBJECTIVES: Congenital encephaloceles provide unique diagnostic and reconstructive challenges for the pediatric rhinologist. The objectives of the current study were to evaluate contemporary treatment strategies for congenital encephaloceles focusing on presentation, surgical technique, and outcomes. METHODS: Multi-institutional retrospective chart review of congenital encephaloceles (2003-2019). Data regarding demographics, presenting symptoms, associated abnormalities, surgical technique, size, location, and complications were collected...
January 8, 2020: International Journal of Pediatric Otorhinolaryngology
Lise-Marie Roussel, Vincent Patron, Eric Maubert, Clément Escalard, Didier Goux, Vincent Beaudouin, Emmanuèle Lechapt, Sylvain Moreau, Martin Hitier
BACKGROUND: Despite the development of anterior skull base surgery, the anatomy of the nasal bone and anterior cribriform plate remains unclear. A recent study confirmed 2 distinct foramina in the anterior part of cribriform plate: the ethmoidal slit (ES) and the cribroethmoidal foramen (CF). The aim of this study was to specify their content, their anatomic relationship to the frontal sinus and skull base, and their potential value in skull base surgery. METHODS: Dissections were performed on 36 cadaver heads...
November 13, 2019: International Forum of Allergy & Rhinology
Laila Perez de San Roman Mena, Alejandro Monroy-Sosa, Srikant S Chakravarthi, Lior Gonen, Austin Epping, Sammy Khalili, William Smithee, Juanita M Celix, Bhavani Kura, Jonathan Jennings, Richard A Rovin, Melanie B Fukui, Amin B Kassam
BACKGROUND: Endoscopic endonasal approaches to access the sellar and parasellar regions are challenging in the face of anatomical variations or pathological conditions. OBJECTIVE: Propose an anatomically-based model including the orbito-sellar line (OSL), critical oblique foramen line (COFL), and paramedial anterior line (PAL) facilitating safe, superficial-to-deep dissection triangulating upon the medial opticocarotid recess (MOCR). METHODS: Five cadaveric heads were dissected to systematically expose the OSL, COFL, PAL illustrated with image-guidance...
October 23, 2019: World Neurosurgery
Clément Escalard, Lise-Marie Roussel, Michèle Hamon, Apolline Kazemi, Vincent Patron, Martin Hitier
PURPOSE: Ethmoidal slit (ES) and cribroethmoidal foramen (CF) have been poorly studied, without any radiological description. They may ease cribriform plate's diseases. The objective was to describe the frequency, size, and computed tomography (CT) appearance of these foramina. METHODS: A two-part anatomoradiological study was performed: first on dry skulls using a surgical microscope and CT, second on patients CT scans. For each, foramina were searched for, described, and measured when possible...
March 21, 2019: Surgical and Radiologic Anatomy: SRA
Bulent Karci, Rasit Midilli, Umut Erdogan, Goksel Turhal, Sercan Gode
PURPOSE: The aim of this study was to investigate the neurovascular structures and their relevant anatomy with the endonasal endoscopic transpterygoid approach on fresh human cadavers. In addition, the relationship between the vidian nerve, ICA and surrounding structures were investigated METHODS: This study was carried out at an otolaryngology department of a tertiary medical center between June 2014 and June 2015. Ten fresh human cadavers were included in this study. Pterygopalatine fossa was explored via an endoscopic endonasal transpterygoid approach...
October 2018: European Archives of Oto-rhino-laryngology
Carlos D Pinheiro-Neto, Maria Peris-Celda, Tyler Kenning
BACKGROUND: The nasoseptal flap is the main pedicled flap used for endoscopic cranial base reconstruction. For large anterior cranial base defects, the anterior edge is a concern for the nasoseptal flap reach. OBJECTIVE: To present a surgical technique that completely releases the vascular pedicle of the nasoseptal flap from the sphenopalatine artery (SPA) foramen improving considerably the reach of the flap. METHODS: A patient with left anterior cranial base fracture involving the posterior table of the frontal sinus, who presented with cerebrospinal fluid leak and contused brain herniation to the ethmoid and frontal sinuses...
April 24, 2018: Operative Neurosurgery (Hagerstown, Md.)
Karen B Djambazov, Borislav D Kitov, Christo B Zhelyazkov, Atanas N Davarski, Alexandrina R Topalova
Mucocele of the paranasal sinuses is a rare disease with slow evolution. It is a benign, encapsulated and destructive formation filled with mucous fluid and tapistrated with respiratory epithelium. Of all the paranasal sinuses, the sphenoid sinus is affected in only 1-7% of the cases. We present two cases of mucocele of the sphenoid sinus involving the posterior ethmoidal cells. We consider here their clinical presentation, use of neuroimaging in the diagnosis, surgical care and postoperative results. Both patients presented with a history of persistent headache and in addition, one of them had a paresis of the right oculomotor and abducens nerves...
December 20, 2017: Folia Medica
M Eordogh, A Grimm, I Gawish, L Patonay, R Reisch, H R Briner, G Baksa
BACKGROUND: The knowledge of sinonasal vasculature is inevitable in transnasal neurosurgery. We performed an anatomical study on the sphenopalatine artery from the perspective of skull base procedures. METHODOLOGY: To analyse the anatomical landmarks of the sphenopalatine artery, arterial skull corrosion casts (26 head halves) underwent endoscopic transnasal phantom surgery. Furthermore, we performed microsurgical dissection on formaldehyde-fixated cadavers with arterial perfusion (14 head halves) as well as studied Cone Beam CT-scans of anonymised patients and cadavers (115 head sides)...
March 1, 2018: Rhinology
Yangming Li, Randall A Bly, R Alex Harbison, Ian M Humphreys, Mark E Whipple, Blake Hannaford, Kris S Moe
Background  Most existing objective surgical motion analysis schemes are limited to structured surgical tasks or recognition of motion patterns for certain categories of surgeries. Analyzing instrument motion data with respect to anatomical structures can break the limit, and an anatomical region segmentation algorithm is required for the analysis. Methods  An atlas was generated by manually segmenting the skull base into nine regions, including left/right anterior/posterior ethmoid sinuses, frontal sinus, left and right maxillary sinuses, nasal airway, and sphenoid sinus...
December 2017: Journal of Neurological Surgery. Part B, Skull Base
Fo-Ping Chen, Li Lin, Zhen-Yu Qi, Guan-Qun Zhou, Rui Guo, Jiang Hu, Ai-Hua Lin, Jun Ma, Ying Sun
Background: The aim of this study was to build nomograms to predict local recurrence (LR) and regional recurrence (RR) in patients with nasopharyngeal carcinoma (NPC) underwent intensity-modulated radiation therapy (IMRT). Patients and Methods : A total of 1811 patients with non-metastatic NPC treated with IMRT (with or without chemotherapy) between October 2009 and February 2012 at our center were involved for building the nomograms. Nomograms for LR-free rate and RR-free rate at 3- and 5- year were generated as visualizations of Cox proportional hazards regression models, and validated using bootstrap resampling, estimating discrimination and calibration...
2017: Journal of Cancer
Yuzhi Hu, Jing Lu, Gavin C Young
Arthodire placoderms have been proposed as the sister group of Chinese 'maxillate' placoderms plus all the more crownward gnathostomes. These basal groups provide key information for understanding the early evolution of jaws. Here, we test previous assumptions about placoderm jaw structure and function by using high-resolution computed tomography, digital dissection, and enlarged 3D printouts on a unique articulated 400 million-year-old buchanosteid arthrodire. The upper jaw has a double ethmoid and a palatobasal connection, but no otic connection; the dermal bone attachment for the quadrate is different to other placoderms...
August 10, 2017: Scientific Reports
Marì Regoli, Eugenio Bertelli
Orbits are connected with the middle cranial fossa via the optic canal, the superior orbital fissure, the M-type orbitomeningeal foramen, the metoptic canal, an accessory anterior opening of the foramen rotundum, and Warwick's canal. They are also in communication with the anterior cranial fossa via the ethmoidal canals and the A-type orbitomeningeal foramen. The anatomy of these conduits has been recently enriched with several details that are summarized and reviewed in this article.
April 2017: Orbit
Jaswinder Singh, Roselinda Ab Rahman, Zainul Ahmad Rajion, Johari Abdullah, Irfan Mohamad
INTRODUCTION: The human orbit is a complex anatomic region, which plays predominant role in the evaluation of craniofacial complex. A thorough understanding of the relationship of the distance from orbital rim to the important vital structures of the orbital apex is required for the surgeon to perform safe and effective surgery. OBJECTIVES: To evaluate and compare the depth and distances from various points of the orbital rim to the fissures and foramina of the orbital apex between genders in the local population...
January 2017: Journal of Craniofacial Surgery
Jisoo Yoon, Nalini Pather
The anterior ethmoidal foramen (AEF) and posterior ethmoidal foramina (AEF and PEF, respectively) on the medial wall and the cranio-orbital foramen (COF) on the lateral wall are used as landmarks in orbital surgeries. In surgery these foramina, the neurovascular structures they transmit and other orbital structures in close proximity need to be identified to minimise their risk of damage. Despite the clinical importance, the current understandings lack consistency in the precise location, microanatomy and morphology of the foramina...
November 2016: Clinical Anatomy
Francisco J D MacArthur, Gerald W McGarry
With the development of endonasal flaps, an understanding of the arterial anatomy of the nasal cavity has become increasingly important for clinicians. Despite this, there is a lack of current, accurate overviews in the literature. We have used both endoscopic and gross dissection of six fresh frozen cadaveric heads, alongside a literature review, to produce a comprehensive description of the anatomy. Four heads had their arterial systems injected with red latex. Three injected and two uninjected heads were dissected endoscopically, to provide a total of seven sides...
February 2017: European Archives of Oto-rhino-laryngology
Milap P Mehta, Rao V Chundury, Eric S Ahn, Dipesh Mehta, Lyman M Jellema, Julian D Perry
PURPOSE: To determine how accurately a ray through the anterior and posterior ethmoidal foramina predicts the location of the optic foramen. METHODS: Dried, well-preserved, complete human skulls without bony defects belonging to the Hamann-Todd osteological collection of the Cleveland Museum of Natural History were examined. Photography was performed and a ray was drawn on orbit photographs extending through the center of the anterior and posterior ethmoidal foramina toward the optic canal...
November 2016: Ophthalmic Plastic and Reconstructive Surgery
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