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Sphenoid bone

Ethan L Fulwood, Doug M Boyer, Richard F Kay
The pterion, on the lateral aspect of the cranium, is where the zygomatic, frontal, sphenoid, squamosal, and parietal bones approach and contact. The configuration of these bones distinguishes New and Old World anthropoids: most extant platyrrhines exhibit contact between the parietal and zygomatic bones, while all known catarrhines exhibit frontal-alisphenoid contact. However, it is thought that early stem-platyrrhines retained the apparently primitive catarrhine condition. Here we re-evaluate the condition of key fossil taxa using μCT (micro-computed tomography) imaging...
November 2016: Journal of Human Evolution
Aneesh Mohimen, Santhosh Kumar, E R Jayadevan
PURPOSE: To describe a rare clinical entity of intra-osseous skull base arterio-venous fistula managed with transvenous fistula embolization. CASE DETAILS: 57 year old lady presented with complaints of headache and episodic tinnitus with progressive left sided visual deterioration. Cross sectional imaging of the head revealed multiple vascular channels in the sphenoid bone and in bilateral masticator spaces. Catheter angiography showed presence of a large osseous arterio-venous fistula (AVF) epicentered in the body of sphenoid and left pterygoid plates with arterial feeders from bilateral external carotid arteries and venous drainage...
October 11, 2016: World Neurosurgery
Rolfe M Radcliffe, Yasmine Messiaen, Nita L Irby, Thomas J Divers, Curtis W Dewey, Katharyn J Mitchell, Lauren V Schnabel, Abraham J Bezuidenhout, Peter V Scrivani, Norm G Ducharme
OBJECTIVE: To report a transnasal, endoscopically guided ventral surgical approach for accessing the cranial and caudal segments of the sphenopalatine sinus for mass removal in a horse. STUDY DESIGN: Case report. ANIMAL: Adult horse with acute onset blindness referable to a soft tissue mass within the sphenopalatine sinus. CLINICAL REPORT: A 7-year-old Warmblood gelding presented with a history of running into a fence and falling...
October 12, 2016: Veterinary Surgery: VS
Lucas S Stepanko, Manuel O Lagravère
OBJECTIVE: Rapid maxillary expansion (RME) is used to expand the maxilla and increase arch perimeter; yet, there are few reports on its effects on the sphenoid bone. With cone-beam computed topography (CBCT), it is possible to visualize sphenoid bone changes. The purpose of this study was to investigate sphenoid bone changes observed in conjunction with RME treatments, using CBCT. METHODS: Sixty patients (34 women and 26 men, aged 11-17 years) underwent RME as part of their orthodontic treatment...
September 2016: Korean Journal of Orthodontics
Stefan Kliesch, Christian Bauknecht, Georg Bohner, Thomas Liebig, Eberhard Siebert
We report a rare case of entrapment of the basilar artery into the sphenoid bone caused by a longitudinal fracture of the clivus. Using high resolution three-dimensional flat panel angiography, we show preservation of the basilar artery perforators in spite of severe stenosis of the entrapped segment of the basilar artery. There were no obvious signs and symptoms of posterior fossa stroke clinically or radiographically as far as could be assessed under given clinical circumstances.
September 23, 2016: Journal of Neurointerventional Surgery
Stefan Kliesch, Christian Bauknecht, Georg Bohner, Thomas Liebig, Eberhard Siebert
We report a rare case of entrapment of the basilar artery into the sphenoid bone caused by a longitudinal fracture of the clivus. Using high resolution three-dimensional flat panel angiography, we show preservation of the basilar artery perforators in spite of severe stenosis of the entrapped segment of the basilar artery. There were no obvious signs and symptoms of posterior fossa stroke clinically or radiographically as far as could be assessed under given clinical circumstances.
2016: BMJ Case Reports
Debajyoti Chatterjee, Kirti Gupta, Navneet Singla, Ankur Kapoor
While giant cell tumor is commonly a tumor of long bones, involvement of sphenoid bone is very rare. Clinically and radiologically, it mimics other neoplasms of this site. Endochondral ossification of this bone during development explains its curious preferential involvement in comparison to the rest of the skull bones. We describe an example of such a tumor arising in the sphenoid bone in a young woman and discuss the differential diagnosis. Recognizing its characteristic features is important for correct interpretation...
September 19, 2016: Clinical Neuropathology
Juliana Mayara Magalhães Oliveira, Maria Beatriz Carrazzone Cal Alonso, Maria José Albuquerque Pereira de Sousa E Tucunduva, Acácio Fuziy, Ana Carla Raphaelli Nahás Scocate, André Luiz Ferreira Costa
PURPOSE: The sphenoid sinus is the most inaccessible part of the face, being inside the sphenoid bone and closely related to numerous vital neural and vascular structures. The objective of this study was to analyze and evaluate the variation of anatomy and the volume of the sphenoid sinus using helical computed tomography and medical imaging software. MATERIALS AND METHODS: A total of 47 helical CT scans of sinuses of male and female individuals aged 18-86 years were selected...
September 15, 2016: Surgical and Radiologic Anatomy: SRA
Murat Ulutas, Suat Boyacı, Akın Akakın, Türker Kılıç, Kaya Aksoy
BACKGROUND: Tumors of the middle fossa or cavernous sinus (CS), or intraorbital tumors, can penetrate each other through the superior orbital fissure (SOF) or neighboring tissue. These complicated pathologies are often treated with highly invasive surgical procedures. In this article, we demonstrate surgical anatomic dissections of the CS, SOF, orbital apex (OA), and dura mater extending to the periorbita from the middle fossa, by performing an epidural dissection via a lateral orbitotomy approach, and discuss findings that may provide guidance during surgery in these regions...
November 2016: Acta Neurochirurgica
Sujata Mohanty, Himanshu Gupta, Jitender Dabas, Priyadarshan Kumar
Osteochondromas are benign bony tumors which are commonly believed to originate by the proliferation of epiphyseal cartilage into the surrounding tissues. However, this hypothesis cannot explain the occurrence of this tumor in the intramembranous bones and soft tissue. Since most of the craniofacial bones have intramembranous origin, the occurrence of this lesion in this territory is considered rare. Contrary to the above hypothesis, Lichtenstein proposed that this entity arises from the metaplastic changes in the periosteum which explains the occurrence of this tumor in endochondral as well as intramembranous bones and also in soft tissues...
May 2016: Journal of Oral and Maxillofacial Pathology: JOMFP
Ya O Grusha, D S Ismailova, P A Kochetkov, S S Danilov
UNLABELLED: Precise instrument localization is of great importance in orbital decompression surgery. Different navigation systems were designed to fulfill this task and gained wide acceptance. AIM: to describe principal features and determine advantages of intraoperatively navigated orbital bony decompression. MATERIAL AND METHODS: Data on orbital decompression surgery performed with or without intraoperative image guidance is presented. Each time two surgeons were involved - an ophthalmologist (lateral wall decompression) and otolaryngologist (medial wall decompression)...
July 2016: Vestnik Oftalmologii
Jong Eon Ernie Park, Sophie Gray, Hamza Bennani, Joseph S Antoun, Mauro Farella
INTRODUCTION: The purpose of this study was to morphometrically investigate the growth pattern of the adenoids in growing subjects with hyperdivergent and hypodivergent vertical craniofacial features. METHODS: In this retrospective study, we used a longitudinal sample of lateral cephalometric radiographs of 28 hyperdivergent and 30 hypodivergent subjects from 4 to 13 years of age. The radiographs were obtained from the American Association of Orthodontists Foundation Craniofacial Growth Legacy Collection...
September 2016: American Journal of Orthodontics and Dentofacial Orthopedics
Harald Abele, Jiri Sonek, Dominik Goldschmid, Philipp Wagner, Markus Hoopmann, Karl Oliver Kagan
OBJECTIVE: To examine the spheno-frontal distance (SFD) in a large series of aneuploid fetuses in the second and third trimesters and compare it with euploid population. METHODS: First, we searched the database for pregnancies with the diagnosis of trisomy 21, 18, 13, triploidy or Turner syndrome after 15 weeks' gestation. Whenever possible, we selected images that were obtained between 19 and 22 weeks. For the normal population, we randomly selected two euploid fetuses for each aneuploid case and matched them for gestational age...
August 23, 2016: Ultrasound in Obstetrics & Gynecology
Seda Uygun, Huseyin Selcuk Surucu, Ilkan Tatar, Burce Ozgen, Selcuk Tunali, Mustafa Berker
PURPOSE: Articulation of rostrum of sphenoid bone with alae of vomer forms a schindylesis type of joint. The circumference of this joint, called sphenovomerine suture (SVS), is very important in establishing a reliable surgical field in the endoscopic transsphenoidal pituitary surgery. Because of its vital role in endoscopic transsphenoidal pituitary surgery, this radio-anatomical study was designed to establish the morphological properties of SVS. METHODS: In this study, the authors examined SVS in 235 patients (121 females and 114 males) on the computed tomography images of the paranasal sinus and made 4 measurements to describe SVS...
October 2016: Journal of Craniofacial Surgery
Ying Zhu, Miao Fan, Sagar Pandey, Wei Liang, Dandan Chang
INTRODUCTION: Epithelioid hemangioedothelioma (EHE) is a rare vascular tumor characterized by neoplastic proliferation of epithelioid or histiocytoid epithelial cells. EHE of bone constitutes <1% of primary malignant bone tumor. EHE in the skull is an extremely rare case. Here, we report a case of multiple neoplasm of the skull in a 15-month-old boy who presented with gradual facial swelling for 2 months. On computed tomography (CT) scan, multiple irregular osteolytic lesions were seen on the right maxillary, sphenoid, left zygoma, and roof of the left orbit...
July 2016: Medicine (Baltimore)
Jinchao Li, Shouhong Li
OBJECTIVE: To characterize the phenotypes of spheno-occipital synchondrosis (SOS) in Chinese patients with Crouzon syndrome. METHODS: Twelve patients with Crouzon syndrome were included in this retrospective study, and were divided into 2 groups. The first group included 5 patients (5-7-year old), whereas 7 patients were included in the second group (8-11-year old). Two age- and sex-matched control groups were constituted for comparison. All patients and controls were underwent preoperative computed tomography examinations of the craniofacial area, and the three-dimensional skull models, sagittal, and axial images were reconstructed...
July 2016: Journal of Craniofacial Surgery
R Jankowski, D T Nguyen, M Poussel, B Chenuel, P Gallet, C Rumeau
This paper presents a brief history of the successive anatomical, physiological and pathophysiological concepts about the paranasal sinuses. Sinusology, the science of the paranasal sinuses, is founded on scientific work on the production of nitric oxide (NO) by the sinuses and on the evo-devo theory of their formation. The paranasal sinuses seem to develop after regression of the erythropoietic marrow in the maxillary, frontal and sphenoid bones and its replacement by cavities filled with gas, which escapes into the nasal fossae through the ostium...
September 2016: European Annals of Otorhinolaryngology, Head and Neck Diseases
Jun-Jie Jing, Qing-Shuang Zhao, Lin Zhao, Zhi-Yu Xi, Ye-Huang Chen, Shou-Shen Wang
The aim of this report is to investigate the pathogenesis and surgical treatment of encephalocele located in the sphenoid sinus and presented with spontaneous rhinorrhea. The data of a patient with sphenoid sinus encephalocele was analyzed in association with the review of literature. The patient admitted to our clinic with rhinorrhea from the left nasal cavity. Cranial magnetic resonance imaging revealed bone defects in the left sphenoid sinus wall, and the presence of brain tissue and cerebrospinal fluid (CSF) in the sphenoid sinus...
2016: Turkish Neurosurgery
Huiping Ye, Zhengpeng Gong, Wen Yang, Yubing Dai
Primary non-Hodgkin lymphoma (PNHL) of the sphenoid sinus is a rare neoplasm that poses a diagnostic challenge to clinicians. The proximity of the optical nerve and canal to the sphenoid sinus is accountable for the high incidence of visual disturbance in PNHL of the sphenoid sinus. In particular, patients whose radiologic diagnosis reveals bone destruction in the lateral wall involved with optical-nerve-canals or cavernous sinus present a high risk of rapidly developing unilateral blindness. The present study reports 2 rare cases of PNHL of the sphenoid sinus...
June 2016: Oncology Letters
Tamara Miner Haygood, Mark Herndon, Pranav Chitkara, Raymond Alexanian
We present the case of a 62-year-old woman with chondromyxoid fibroma of the sphenoid sinus. Chondromyxoid fibroma is a rare bone tumor found most prevalently in long bones, so its presence at the cranial base is especially uncommon. The presence of a monoclonal gammopathy of undermined significance (MGUS) prompted consideration and investigation of a plasma cell disorder; however, CT and MRI findings followed by biopsy led to the correct diagnosis of chondromyxoid fibroma.
2010: Radiology case reports
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