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https://www.readbyqxmd.com/read/28212886/primary-ameloblastoma-of-the-temporal-bone
#1
Andro Košec, Jakov Ajduk, Mihael Ries, Robert Trotić
Ameloblastoma is a locally aggressive tumor derived from odontogenic epithelium. Although benign, its clinical behavior can often exhibit malignant characteristics. It is marked by slow and persistent growth with infiltration of adjacent tissues. Almost 70% occur in the mandible in patients older than 30 years. Recurrence of ameloblastoma from inadequate treatment is frequent. Because of its slow growth, recurrences can present decades after primary surgery. A primary ameloblastoma in an area outside the mandibular, maxillary, and infratemporal fossa regions has not been described in detail to date, with only 1 possible case mentioned in the literature...
January 24, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28202821/-pres-posterior-reversible-encephalopathy-syndrome
#2
Kouichirou Okamoto, Kunio Motohashi, Hidemoto Fujiwara, Tomohiko Ishihara, Itaru Ninomiya, Osamu Onodera, Yukihiko Fujii
Posterior reversible encephalopathy syndrome (PRES) is suggested in patients with acute neurological symptoms in the appropriate clinical context, including acute hypertension, blood pressure fluctuations, renal failure, blood transfusion, immunosuppression, autoimmune disorders, and eclampsia. PRES is a clinical syndrome, and refers to a disorder with reversible subcortical vasogenic brain edema caused by endothelial dysfunction, predominantly involving the bilateral parieto-occipital regions. Although the clinical course and prognosis are favorable in most cases, intracranial hemorrhage and/or restricted diffusion similar to acute infarction could be seen in some lesions on brain magnetic resonance imaging (MRI)...
February 2017: Brain and Nerve, Shinkei Kenkyū No Shinpo
https://www.readbyqxmd.com/read/28193763/neurologic-involvement-in-patients-with-atypical-chediak-higashi-disease
#3
Wendy J Introne, Wendy Westbroek, Catherine A Groden, Vikas Bhambhani, Gretchen A Golas, Eva H Baker, Tanya J Lehky, Joseph Snow, Shira G Ziegler, May Christine V Malicdan, David R Adams, Heidi M Dorward, Richard A Hess, Marjan Huizing, William A Gahl, Camilo Toro
OBJECTIVE: To delineate the developmental and progressive neurodegenerative features in 9 young adults with the atypical form of Chediak-Higashi disease (CHD) enrolled in a natural history study. METHODS: Patients with atypical clinical features, but diagnostically confirmed CHD by standard evaluation of blood smears and molecular genotyping, underwent complete neurologic evaluation, MRI of the brain, electrophysiologic examination, and neuropsychological testing...
14, 2017: Neurology
https://www.readbyqxmd.com/read/28192784/extra-axial-cerebellopontine-angle-medulloblastoma-in-an-infant
#4
Mukesh Kumar Bhaskar, Manish Jaiswal, Bal Krishna Ojha, Sunil Kumar Singh, Anil Chandra, Mukta Meel, Mohd Faheem
Medulloblastoma is a common tumor of the posterior fossa, representing 20-25% of all pediatric neoplasms. It commonly occurs in the midline (cerebellar vermis) and rarely at the cerebellopontine angle. Most of them are intra-axial, and an extra-axial location of this tumor is very rare. Extra-axial cerebellopontine angle medulloblastoma is extremely uncommon and has never been reported in an infant. We report an extra-axial cerebellopontine angle medulloblastoma in a 1-year-old child.
February 14, 2017: Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28191620/clinical-application-of-scalp-markers-and-three-dimensional-sliced-computer-tomography-reconstructions-of-the-skull-transverse-sigmoid-sinus-groove-in-the-retrosigmoid-approach
#5
Chao Wang, Han Guoqiang, Chao You, Chuangxi Liu
AIM: To explore the clinical value of bone flap creation and the sinus protection in the approach of retrosigmoid keyhole craniotomy with the guidance of three-dimensional (3D) sliced computer tomography (CT) reconstruction of the skull transverse sinus and sigmoid sinus groove. MATERIAL AND METHODS: The scalp tracings of the transverse sinus and sigmoid sinus groove of 108 posterior fossa lesion patients were delineated by gentian violet, which relies on the relationship between its 3D reconstruction location and scalp marker...
January 17, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/28187964/brain-perfusion-and-diffusion-abnormalities-in-children-treated-for-posterior-fossa-brain-tumors
#6
Matthew D Li, Nils D Forkert, Palak Kundu, Cheryl Ambler, Robert M Lober, Terry C Burns, Patrick D Barnes, Iris C Gibbs, Gerald A Grant, Paul G Fisher, Samuel H Cheshier, Cynthia J Campen, Michelle Monje, Kristen W Yeom
OBJECTIVE: To compare cerebral perfusion and diffusion in survivors of childhood posterior fossa brain tumor with neurologically normal controls and correlate differences with cognitive dysfunction. STUDY DESIGN: We analyzed retrospectively arterial spin-labeled cerebral blood flow (CBF) and apparent diffusion coefficient (ADC) in 21 patients with medulloblastoma (MB), 18 patients with pilocytic astrocytoma (PA), and 64 neurologically normal children. We generated ANCOVA models to evaluate treatment effects on the cerebral cortex, thalamus, caudate, putamen, globus pallidus, hippocampus, amygdala, nucleus accumbens, and cerebral white matter at time points an average of 5...
February 7, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28181025/surgical-management-of-chiari-i-malformation-based-on-different-cerebrospinal-fluid-flow-patterns-at-the-cranial-vertebral-junction
#7
Tao Fan, HaiJun Zhao, XinGang Zhao, Cong Liang, YinQian Wang, QiFei Gai
Chiari I malformation has been shown to present different cerebrospinal fluid (CSF) flow patterns at the cranial-vertebral junction (CVJ). Posterior fossa decompression is the first-line treatment for symptomatic Chiari I malformation. However, there is still controversy on the indication and selection of decompression procedures. This research aims to investigate the clinical indications, outcomes, and complications of the decompression procedures as alternative treatments for Chiari I malformation, based on the different CSF flow patterns at the cranial-vertebral junction...
February 9, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/28180040/evaluation-of-ventriculoperitoneal-shunt-related-complications-in-intracranial-meningioma-with-hydrocephalus
#8
Shyamal C Bir, Shabal Sapkota, Tanmoy K Maiti, Subhas Konar, Papireddy Bollam, Anil Nanda
Objective Meningioma is a common intracranial tumor that predisposes patients to hydrocephalus which may require a permanent cerebrospinal fluid (CSF) diversion procedure such as ventriculoperitoneal (VP) shunts. We reviewed our long-term experience with VP shunts for the management of hydrocephalus in patients with meningioma. Methods and Materials A total of 48 Patients with meningioma who underwent VP shunt insertion for hydrocephalus from 1990 to 2013 was included in our case series. The study population was evaluated clinically and radiographically after VP shunt placement...
February 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28179177/advantage-of-high-b-value-diffusion-weighted-imaging-for-differentiation-of-hemangioblastoma-from-brain-metastases-in-posterior-fossa
#9
Shumpei Onishi, Takanori Hirose, Takeshi Takayasu, Ryo Nosaka, Manish Kolakshyapati, Taiichi Saito, Yuji Akiyama, Kazuhiko Sugiyama, Kaoru Kurisu, Fumiyuki Yamasaki
OBJECTIVE: It is sometimes difficult to make differential diagnosis between brain metastases and hemangioblastoma in posterior fossa. We assessed whether high b-value diffusion weighted image (DWI) at b-4000 could differentiate these tumors. METHODS: We acquired DWI at 3T magnetic resonance imaging (MRI) with b = 1000 and b = 4000 s/mm(2) in histologically confirmed 12 patients of hemangioblastoma without von-Hippel Lindau disease and 16 patients of brain metastases originating at posterior fossa...
February 4, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28175474/197%C3%A2-considerations-in-relationship-to-the-approach-for-the-treatment-of-lateralized-posterior-fossa-tumors-in-children
#10
Mark Calayag, Brandon C Gabel, David S Hong, Dustin Hatefi, David D Gonda, Hal S Meltzer, Michael L Levy
No abstract text is available yet for this article.
August 1, 2016: Neurosurgery
https://www.readbyqxmd.com/read/28171738/analysis-of-audiometric-outcomes-following-combined-middle-cranial-fossa-transmastoid-approaches-for-spontaneous-cerebrospinal-fluid-otorrhea
#11
Shawn M Stevens, Ryan Crane, Myles L Pensak, Ravi N Samy
Outcome Objectives To (1) explore audiometric outcomes following use of a combined transmastoid/middle cranial fossa (TM-MCF) approach in the treatment of spontaneous cerebrospinal fluid (CSF) otorrhea and (2) determine the influence of dehiscence location and reconstructive methodology on audiometric outcomes. Study Design Case series with chart review. Setting Tertiary care center. Subjects and Methods Adults with spontaneous CSF otorrhea were reviewed from 2007 to 2016 if they underwent combined TM-MCF. Definitive audiometric evaluations were performed at least 3 months postoperatively...
February 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28169904/endoscopic-transnasal-transpterygoid-excision-of-an-infratemporal-dermoid-cyst
#12
Gökhan Kuran, Demet Yazici
OBJECTIVE: Intracranial dermoid cysts are rare, slow-growing masses of sellar, parasellar regions, and posterior cranial fossa. The symptomatology of these cysts depends on the localization and presence of rupture. The preoperative diagnosis of these cysts by imagining techniques is distinctive as they have characteristic appearances. PATIENT: Endoscopic transnasal transpterygoid approach to infratemporal fossa for an extradural dermoid cyst of a 24 year-old woman is presented in this clinical report...
February 6, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28163533/embolization-of-a-complex-posterior-fossa-dural-arteriovenous-fistula-with-precipitating-hydrophobic-injectable-liquid
#13
Dale Ding, Ben McGuinness, Stefan Brew
No abstract text is available yet for this article.
December 2016: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/28157792/ultrasound-guided-costoclavicular-brachial-plexus-block-sonoanatomy-technique-and-block-dynamics
#14
Jia Wei Li, Banchobporn Songthamwat, Winnie Samy, Xavier Sala-Blanch, Manoj Kumar Karmakar
BACKGROUND AND OBJECTIVES: This study aimed to describe in detail the relevant sonoanatomy, technique, and block dynamics of an ultrasound-guided costoclavicular brachial plexus block (BPB). METHODS: Thirty patients scheduled for hand or forearm surgery under a BPB underwent transverse ultrasound imaging of the medial infraclavicular fossa to identify the cords of the brachial plexus at the costoclavicular space (CCS). An ultrasound-guided BPB was then performed at the CCS with 20 mL of 0...
March 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/28144776/partial-wrap-clipping-of-the-entrance-of-the-pseudolumen-of-a-fusiform-aneurysm-in-the-posterior-inferior-cerebellar-artery-a-technical-note
#15
Yasushi Motoyama, Yoshiaki Takamura, Shuichi Yamada, Young-Su Park, Hiroyuki Nakase
BACKGROUND: Fusiform aneurysms in the posterior inferior cerebellar artery (PICA) are rare and challenging to treat. Surgical treatment options for a fusiform aneurysm in the PICA include trapping with/without bypass and wrap-clipping, when elimination of the pathological wall from the systemic circulation and prevention of perforator injury are important. In addition, lower cranial nerve impairment due to surgical manipulation should also be avoided. METHOD: A fusiform-shaped aneurysm was found in a proximal part of the PICA by magnetic resonance angiography undertaken for evaluation of repeated vertigo in a 36-year-old man...
January 31, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28139440/the-parasternal-short-axis-view-improves-diagnostic-accuracy-for-inferior-sinus-venosus-type-of-atrial-septal-defects-by-transthoracic-echocardiography
#16
Brian S Snarr, Michael Y Liu, Jeremy C Zuckerberg, Christine B Falkensammer, Sumekala Nadaraj, Danielle Burstein, Deborah Ho, Monique A Gardner, Arene Butto, Stanford G Ewing, Natesa G Pandian, Anirban Banerjee
BACKGROUND: Sinus venosus defects (SVD) of the inferior vena cava (IVC) type, or inferior SVDs, are an uncommon form of atrial communication located outside the confines of the fossa ovalis and involve override of the IVC. Despite numerous studies describing the anatomical and echocardiographic features of the inferior SVD, distinguishing this defect from a large secundum atrial septal defect (ASD) by echocardiography is often challenging. Accurate diagnosis of an inferior SVD and correct differentiation from a secundum ASD is essential for appropriate presurgical planning...
January 27, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28137902/lhermitte-duclos-disease-associated-to-cowden-syndrome-de-novo-diagnosis-and-management-of-these-extremely-rare-syndromes-in-a-patient
#17
Ivo Gama, Leonor Almeida
A 36-year-old woman, with history of cutaneous papilomatosis and thyroid carcinoma presented with headache, transitory visual blurring and nausea. Funduscopy showed papilloedema. MRI showed a tumour of the right cerebellar hemisphere with a striated, tigroid pattern, typical of Lhermitte-Duclos disease (LDD). Significant clinical and perimetric improvements were noted after surgery and the follow-up did not reveal recurrences of the tumour. LDD is an extremely rare differential diagnosis of posterior fossa tumours...
January 30, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28137547/repeat-intracranial-expansion-after-skull-re-growth-in-hyperostotic-disease-a-technical-note
#18
Timothy Wong, Yehuda Herschman, Nitesh V Patel, Tushar Patel, Simon Hanft
OBJECTIVE: and Importance: Camurati-Engelmann's disease (CED) is a rare, autosomal dominant genetic disorder resulting in hyperostosis of the long bones and skull.(1-4) Patients often develop cranial nerve dysfunction and increased intracranial pressure secondary to stenosis of nerve foramina and hyperostosis.(1-11) Surgical decompression may provide symptomatic relief in select patients; however, a small number of reports document the recurrence of symptoms due to bony regrowth.(1, 6, 7, 9-11) We present a patient who had previously been treated with bilateral frontal and parietal craniotomy that experienced recurrence of symptoms due to re-ossification of her cranial bones...
January 27, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28134637/experiences-in-performing-posterior-calvarial-distraction
#19
Kevin McMillan, Mark Lloyd, Martin Evans, Nicholas White, Hiroshi Nishikawa, Desiderio Rodrigues, Melanie Sharp, Pete Noons, Guirish Solanki, Stephen Dover
The use of posterior calvarial distraction (PCD) for the management of craniosynostosis is well recognized. The advantages of using this technique include increased cranial volume, decreased intracranial pressure, relief of posterior fossa crowding, improved cerebrospinal fluid (CSF) circulation at the cranio-cervical junction with cessation, and possible resolution of syrinx.The authors retrospectively review their first 50 patients who have undergone PCD under the senior author's care in our unit.The demographics, diagnoses, intraoperative approach with techniques in distractor placement and outcomes of each patient were obtained through an electronic craniofacial database and written patient records...
January 27, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28133584/preservation-of-the-myofascial-cuff-during-posterior-fossa-surgery-to-reduce-the-rate-of-pseudomeningocele-formation-and-cerebrospinal-fluid-leak-a-technical-note
#20
Daniel R Felbaum, Kyle Mueller, Amjad Anaizi, Robert B Mason, Walter C Jean, Jean M Voyadzis
INTRODUCTION:  Suboccipital craniotomy is a workhorse neurosurgical operation for approaching the posterior fossa but carries a high risk of pseudomeningocele and cerebrospinal fluid (CSF) leak. We describe our experience with a simple T-shaped fascial opening that preserves the occipital myofascial cuff as compared to traditional methods to reduce this risk. METHODS:  A single institution, retrospective review of prospectively collected database was performed of patients that underwent a suboccipital craniectomy or craniotomy...
December 28, 2016: Curēus
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