keyword
MENU ▼
Read by QxMD icon Read
search

Sphenoid bone

keyword
https://www.readbyqxmd.com/read/29138975/distal-transsylvian-keyhole-approach-for-unruptured-anterior-circulation-small-aneurysms
#1
Ririko Takeda, Hiroki Kurita
BACKGROUND: To reduce complications associated with conventional pterional craniotomy, a transsylvian keyhole approach for unruptured small anterior circulation aneurysms is proposed. METHODS: A 7-cm linear scalp incision is made along the hairline, beginning at the zygoma, followed by minimal temporal muscle dissection. Two burr holes are drilled out at McCarty's point and the temporal bone, and a 3-cm equilateral triangle bone flap is made, whose apex is located above the sylvian point...
November 14, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29134161/pneumatization-patterns-of-the-petrous-apex-and-lateral-sphenoid-recess
#2
Alexander Malone, Margherita Bruni, Robert Wong, Mark Tabor, K Paul Boyev
Introduction  The petrous apex poses a challenge for surgical intervention due to poor access. As intraoperative image guidance and surgical instrumentation improve, newer endoscopic approaches are increasingly favored. This study aims to provide normative data on the anatomy of the lateral sphenoid sinus recess and petrous apex. These normative data could assist in determining the efficacy of a transnasal transsphenoidal approach to lesions of the anteroinferior petrous apex. Methods  This is a retrospective study investigating normative data on all maxillofacial computed tomography (CT) scans performed at a level I trauma center over a 6-month period...
December 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/29068968/isolated-intraorbital-frontosphenoidal-synostosis
#3
Paul A Mittermiller, Kristen W Yeom, Robert M Menard
Unilateral anterior plagiocephaly is most commonly the result of deformational plagiocephaly or unilateral coronal synostosis, a premature fusion of the frontoparietal suture. However, other sutures within the coronal ring have been implicated in producing anterior cranial asymmetries. These fusions can occur in isolation or in concert with adjacent sutures. The frontosphenoidal suture is one such suture within the coronal ring that has been involved both concomitantly with and independently of frontoparietal suture fusion...
October 24, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29061457/3d-printed-craniosynostosis-model-a-new-simulation-surgical-tool
#4
Enrico Ghizoni, João Paulo Sant Ana Santos de Souza, Cassio Eduardo Raposo-Amaral, Rafael Denadai, Humberto Belém de Aquino, Cesar Augusto Raposo-Amaral, Andrei Fernandes Joaquim, Helder Tedeschi, Luís Fernando Bernardes, André L Jardini
BACKGROUND: Craniosynostosis is a complex disease once it involves deep anatomical perception, and a minor mistake during surgery can be fatal. The objective of this report is to present novel three-dimensional (3D)-printed polyamide craniosynostosis models that can improve the understanding and treatment complex pathologies. METHODS: The software InVesalius was used for segmentation of the anatomy image (from three patients between 6 and 9 months old). Afterward, the file was transferred to a Three-Dimensional Printing (3DP) system and, with the use of an infrared laser, slices of powder PA 2200 were consecutively added to build a polyamide model of cranial bone...
October 20, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28994872/primary-ewing-s-sarcoma-of-the-sphenoid-sinus-with-orbital-and-intracranial-extension-a-case-report
#5
Senda Turki, Skander Kedous, Madiha Mahjoubi, Sawssen Dhambri, Zied Attia, Slim Touati
Ewing's sarcoma is a high-grade neuroectodermal primary bone tumor. This is the second primary bone tumor in children afterosteosarcoma and represents 4 to10% of cases. It can occur in all skeletal bones. However, the location at the facial bones is uncommon (1to2%) and extremely rare at the sphenoid sinus. We report the clinical results of a rare case of Ewing's sarcoma of the sphenoid with intraorbitaland intracranial extension.
November 2016: La Tunisie Médicale
https://www.readbyqxmd.com/read/28980049/effects-of-endogenous-hypercortisolism-on-bone-mrna-and-microrna-expression-in-humans
#6
Z E Belaya, T A Grebennikova, G A Melnichenko, A G Nikitin, A G Solodovnikov, O I Brovkina, A U Grigoriev, L Y Rozhinskaya, I I Dedov
Hypercortisolism in humans suppresses osteoblastogenesis and osteoblast function through the upregulation of Wnt-signaling antagonists (sclerostin, Dkk1) and changes in microRNAs levels (miR-125b-5p, miR-218-5p, miR-34a-5p, miR-188-3p, miR-199a-5p) which are associated with mesenchymal stem-cell commitment to adipocytes or cartilage cells over the osteoblasts. INTRODUCTION: The purpose of this study was to evaluate the responses of bone to chronic glucocorticoid (GC) excess by measuring the levels of selected mRNA and microRNA (miR) in bone samples of patients with Cushing's disease (CD)...
October 4, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28979633/-rare-localization-of-aneurysmal-bone-cyst-in-the-sphenoid-bone
#7
Farida Abdoulkader, Kaoutar Aammou, Abdellatif Siwane, Fatiha Essodegui
Aneurysmal bone cyst is a benign tumor that can affect all bones in the body. It rarely affects the base of the skull. It is usually located at the level of the long bones. We report the clinical case of a 44-year old man treated for a mass in the basisphenoid wrongly diagnosed as invasive prolactin-producing macroadenoma for which he was put under dopamine agonists over a period of 9 months. We adjusted the diagnosis by suggesting aneurysmal bone cyst in the sphenoid bone on the basis of its almost pathognomonic radiological aspect on MRI...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28963390/acromegaly-with-hypophosphataemia-mccune-albright-syndrome
#8
Rimesh Pal, Pinaki Dutta, Kanchan Kumar Mukherjee, Anil Bhansali
A 38-year-old man presented with excessive height gain and progressive enlargement of the extremities since childhood. This was compounded by lower limb deformities over the past 5 years. On examination, his height was 196 cm, he had macroglossia, acral enlargement, seborrhoea, hyperhidrosis-suggesting acrogigantism. He had facial asymmetry, wind-swept deformity of lower limbs and a café-au-lait macule over his trunk. Investigations revealed normal-sized pituitary gland with dysplastic cranial bones. Isotope bone scintigraphy was suggestive of polyostotic fibrous dysplasia...
September 28, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28924440/swollen-optic-disc-and-sinusitis
#9
Chiara Del Noce, Filippo Marchi, Giacomo Sollini, Michele Iester
PURPOSE: To present a case of optic disc swelling caused by sinusitis. METHODS: Ocular symptoms were investigated using computed tomography imaging of the facial bones to detect the relationship between the sinus inflammation and the optic nerve. RESULTS: A particular configuration of the optic nerve was detected. Optic nerve course through the inflamed sphenoidal sinus is a condition associated with a greater risk of inflammation. CONCLUSION: Sinusitis is a rare but treatable cause of optic neuritis...
May 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28883763/cyberknife-stereotactic-radiosurgery-and-denosumab-for-giant-cell-tumour-of-the-skull-base-case-report
#10
Cuauhtemoc de la Peña, Jorge H Guajardo, Maria F Gonzalez, Miguel A Hinojosa, Erick Cardona
Giant cell tumours (GCT) of the skull is a rare entity with only small number of cases reported in literature and optimal treatment is yet to be determined. These tumours have shown high recurrence rates after incomplete surgery, usually occurring during the first year. Even with new surgical techniques a complete resection in skull base tumours is not always possible without functional compromise. Therefore, adjuvant therapy is essential to enhance local control and quality of life. We report a rare case of a 34-year-old male with giant cell tumour (GCT) of the skull base involving the petrous bone, clivus and sphenoid body...
November 2017: Reports of Practical Oncology and Radiotherapy
https://www.readbyqxmd.com/read/28862553/transorbital-endoscopic-eyelid-approach-for-resection-of-sphenoorbital-meningiomas-with-predominant-hyperostosis-report-of-2-cases
#11
João Paulo Almeida, Sacit B Omay, Sathwik R Shetty, Yu-Ning Chen, Armando S Ruiz-Treviño, Buqing Liang, Vijay K Anand, Benjamin Levine, Theodore H Schwartz
Sphenoorbital meningiomas (SOMs) are slow-growing tumors that originate from the sphenoidal wing and are associated with visual deterioration, extrinsic ocular movement disorders, and proptosis caused by hyperostosis of the lateral wall of the orbit. In some cases, the intracranial component is quite small or "en plaque," and the majority of the symptoms arise from adjacent hyperostosis. Craniotomy has traditionally been the standard of care, but new minimally invasive multiportal endoscopic approaches offer an alternative...
September 1, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28841120/endoscopic-extradural-supraorbital-approach-to-the-temporal-pole-and-adjacent-area-technical-note
#12
Fuminari Komatsu, Masaaki Imai, Hideaki Shigematsu, Rie Aoki, Shinri Oda, Masami Shimoda, Mitsunori Matsumae
The authors' initial experience with the endoscopic extradural supraorbital approach to the temporal pole and adjacent area is reported. Fully endoscopic surgery using the extradural space via a supraorbital keyhole was performed for tumors in or around the temporal pole, including temporal pole cavernous angioma, sphenoid ridge meningioma, and cavernous sinus pituitary adenoma, mainly using 4-mm, 0° and 30° endoscopes and single-shaft instruments. After making a supraorbital keyhole, a 4-mm, 30° endoscope was advanced into the extradural space of the anterior cranial fossa during lifting of the dura mater...
August 25, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28819530/assessment-of-sphenoid-sinus-related-anatomic-variations-with-computed-tomography
#13
Figen Tunalı Turkdogan, Kenan Ahmet Turkdogan, Murat Dogan, Mehmet Haydar Atalar
INTRODUCTION: Frequent and broad application of endoscopic sinus surgery (ESS) in parallel with experience makes it imperative to know the anatomy and the existing pathology very well before surgery. This study examines the association between anomalies in the sphenoid sinus area in paranasal sinuses computed tomography (PNS-CT) and pathological findings and determines variations of sphenoid sinus. METHODS: A total of 200 cases (100 women, 100 men) who had PNS-CT in the emergency and radiology polyclinics within the period of one year were included in this study...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28799880/a-morphometric-survey-of-the-parasellar-region-in-more-than-2700-skulls-emphasis-on-the-middle-clinoid-process-variants-and-implications-in-endoscopic-and-microsurgical-approaches
#14
Akshay Sharma, Gabrielle E Rieth, Joseph E Tanenbaum, James S Williams, Nakao Ota, Srikant Chakravarthi, Sunil Manjila, Amin Kassam, Bulent Yapicilar
OBJECTIVE The middle clinoid process (MCP) is a bony projection that extends from the sphenoid bone near the lateral margin of the sella turcica. The varied prevalence and morphological features of the MCP in populations stratified by age, race, and sex are unknown; however, the knowledge of its anatomy and preoperative recognition on CT scans can aid greatly in complication avoidance and management. The aim of this study was to further illustrate the surgical anatomy of the parasellar region and to quantify the incidence of MCP and caroticoclinoid rings (CCRs) in dried preserved human anatomical specimens...
August 11, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28770205/fatal-mycotic-aneurysm-of-the-basilar-artery-caused-by-aspergillus-fumigatus-in-a-patient-with-pituitary-adenoma-and-meningitis
#15
Martin Winterholler, Roland Coras, Walter Geißdörfer, Rudolf Rammensee, Philipp Gölitz, Christian Bogdan, Roland Lang
Fungal infections of the central nervous system (CNS) frequently occur in immunosuppressed patients. Here, we describe the case of an immunocompetent 64-year-old man who presented with diplopia, right-sided hemiparesis, and a mild headache after cleaning and replacing nesting boxes of wild birds during the preceding months. Lumbar puncture revealed pleocytosis, elevated protein, and lactate levels in the cerebrospinal fluid (CSF). Initial imaging showed ischemia in the left thalamus and an enlargement of the sellar region...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/28765065/reconstructive-outcome-of-intraoperative-cerebrospinal-fluid-leak-after-endoscopic-endonasal-surgery-for-tumors-involving-skull-base
#16
Chi-Man Jeon, Sang Duk Hong, Ho Jun Seol, Jung-Il Lee, Do-Hyun Nam, Yoon Jung Hwang, Doo-Sik Kong
Endoscopic transnasal surgery for tumors located at the base of the skull has a high incidence of postoperative cerebrospinal fluid (CSF) leaks. Here, we assessed the repair outcomes for high-flow CSF leaks based upon the tumor location, and analyzed the reasons for repair failure after transnasal endoscopic surgery solely for tumors involving the base of the skull. From Feb. 2009 to Dec. 2014 we performed endoscopic endonasal surgery for a variety of skull base lesions in 788 patients at our institution. Among them, 95 patients with intradural skull base tumors underwent endoscopic transnasal surgery...
November 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28751182/unilateral-blindness-after-orthognathic-surgery-hypotensive-anaesthesia-is-not-the-primary-cause
#17
Á Rodríguez-Navarro, F M Gonzalez-Valverde
Perioperative vision loss in non-ocular surgery represents a rare but devastating complication and multiple causes have been proposed. Any portion of the visual system may be involved and several authors have tried to relate that complication with deliberate hypotension anaesthetic technique, used to control intraoperative bleeding. We report a patient operated for orthognathism who suffered unilateral blindness. After review of similar cases, we can state that the transmission of forces generated during Le fort I osteotomy is related to the complication...
July 24, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28749846/three-dimensional-radiologic-study-on-index-measurement-of-endonasal-endoscopic-optic-nerve-decompression
#18
Yao Zhao, Haobo Duan, Jianming Liu, Kailiang Cheng, Yingying Han, Youqiong Li
OBJECTIVE: To provide the radiologic basis for the clinical application of endonasal endoscopic optic nerve decompression (EEOND). METHODS: CTA images were used to observe the optic canal (OC) and related structures of 60 patients (120 sides) with normal nasal, paranasal sinuses, OC, and other related structures. RESULTS: Optic canal could be classified as: the canal (10 sides, 8.33%), the semicanal (25 sides, 20.83%), the impression (49 sides, 40...
September 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28739401/a-review-of-nasal-paranasal-and-skull-base-tumors-invading-the-orbit
#19
REVIEW
Morten Jørgensen, Steffen Heegaard
Tumors that invade the orbit are uncommon. The majority are meningiomas arising from the sphenoid ridge (66%). Others are bone and cartilage tumors arising from the surrounding bones of the orbit, pituitary adenomas, and epithelial tumors arising from the paranasal sinuses and nasal cavity. Meningiomas occur more often in women, whereas epithelial tumors have a predilection for men. Meningiomas and epithelial tumors typically present in the sixth decade of life, whereas bone tumors tend to affect individuals in their third decade of life...
July 22, 2017: Survey of Ophthalmology
https://www.readbyqxmd.com/read/28728241/-petrous-bone-cholesteatoma-surgery-approach-and-outcomes
#20
R Y Wang, W J Han, T Zhang, W D Shen, J Liu, P Dai, S M Yang, D Y Han
Objective: To investigate the choice of surgical approach of petrous bone cholesteatoma (PBC)and surgical outcomes. Methods: A retrospective study was performed on 90 patients diagnosed and treated for PBC from January 2000 to December 2014 by the Chinese People's Liberation Army General Hospital otolaryngologists. According to Sanna's classification, 40 out of the 90 cases were supralabyrinthine, five infralabyrinthine, four infralabyrinthine-apical, 25 massive and 16 apical. Five cases underwent transmastoid and retrolabyrinthine approach, translabyrinthine approach was performed on six patients, 19 cases underwent subtotal petrosectomy, seven cases underwent transotic approach, 41 cases underwent middle fossa approach, combined transmastoid/middle fossa approach was performed on 11 cases, translabyrinthine and sphenoid sinus approach were performed on one case...
July 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
keyword
keyword
119661
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"