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posterior fossa

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https://www.readbyqxmd.com/read/29349991/-effects-of-creating-a-tunnel-through-intercondylar-fossa-under-arthroscopy-for-the-treatment-of-complex-tears-at-the-medial-meniscus-posterior-horn
#1
Ling-Dai Dong, Chang-Jian Bing, Jian-Lin Li, Yue Cai
OBJECTIVE: To discuss the advantages of the arthroscopic treatment for complex tears of the medial meniscus posterior horn by creating a tunnel passageway through the intercondylar fossa. METHODS: All 127 patients including 24 males and 103 females with complex tears at the medial meniscus posterior horn were reviewed. The age of all patients ranged from 45 to 78 years old, with an average of 67 years old. All 127 patients were treated with partial meniscectomy, in which 112 patients were treated with partial meniscectomy smoothly with three incisions (anterior medial incision, anterior lateral incision, high anterior lateral incision), and 15 patients were treated with four incisions (anterior medial incision, anterior lateral incision, high anterior lateral incision, posterior medial incision)...
April 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29348915/extended-posterior-approach-for-huge-popliteal-aneurysm-extended-to-superficial-femoral-artery
#2
Tomoki Cho, Hideyuki Iwaki, Munetaka Masuda
Objectives: Generally, popliteal artery aneurysms have been addressed surgically by a medial, posterior, or lateral approach. We have designed a new posterior approach that exposes the superficial femoral artery and entire popliteal artery without dividing any muscles in a just prone position. Methods and results: A 72-year old man with huge popliteal aneurysm extended to superficial femoral artery was admitted to our hospital. Surgery was performed due to a high risk of rupture...
2018: SAGE Open Medical Case Reports
https://www.readbyqxmd.com/read/29348301/predicting-the-presence-of-macrovascular-causes-in-non-traumatic-intracerebral-haemorrhage-the-diagram-prediction-score
#3
Nina A Hilkens, Charlotte J J van Asch, David J Werring, Duncan Wilson, Gabriël J E Rinkel, Ale Algra, Birgitta K Velthuis, Gérard A P de Kort, Theo D Witkamp, Koen M van Nieuwenhuizen, Frank-Erik de Leeuw, Wouter J Schonewille, Paul L M de Kort, Diederik W J Dippel, Theodora W M Raaymakers, Jeannette Hofmeijer, Marieke J H Wermer, Henk Kerkhoff, Korné Jellema, Irene M Bronner, Michel J M Remmers, Henri Paul Bienfait, Ron J G M Witjes, H Rolf Jäger, Jacoba P Greving, Catharina J M Klijn
OBJECTIVE: A substantial part of non-traumatic intracerebral haemorrhages (ICH) arises from a macrovascular cause, but there is little guidance on selection of patients for additional diagnostic work-up. We aimed to develop and externally validate a model for predicting the probability of a macrovascular cause in patients with non-traumatic ICH. METHODS: The DIagnostic AngioGRAphy to find vascular Malformations (DIAGRAM) study (n=298; 69 macrovascular cause; 23%) is a prospective, multicentre study assessing yield and accuracy of CT angiography (CTA), MRI/ magnetic resonance angiography (MRA) and intra-arterial catheter angiography in diagnosing macrovascular causes in patients with non-traumatic ICH...
January 18, 2018: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/29346182/atypical-teratoid-rhabdoid-tumor-of-the-cauda-equina-in-a-child-report-of-a-very-unusual-case
#4
James M Shiflett, Betty L Herrington, David A Joyner, Ali G Saad
Atypical teratoid/rhabdoid tumors (AT/RT) are highly aggressive malignant primitive neoplasms that commonly occur in children younger than 2 years of age. The prognosis is generally dismal with a median survival time of <1 year. The majority of AT/RT occur in the posterior fossa and less frequently the supratentorium. Primary pediatric spinal AT/RT are exceedingly rare and only 15 cases have been reported to date. Here we report a very unusual case of primary spinal AT/RT extensively involving the spinal cord from T11 down to the cauda equina...
January 16, 2018: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/29345006/embryology-of-the-craniocervical-junction-and-posterior-cranial-fossa-part-i-development-of-the-upper-vertebrae-and-skull
#5
Mohammadali M Shoja, Rebecca Ramdhan, Chad J Jensen, Joshua Chern, W Jerry Oakes, R Shane Tubbs
Although the embryology of the posterior cranial fossa can have life altering effects on a patient, a comprehensive review on this topic is difficult to find in the peer-reviewed medical literature. Therefore, this review paper, using standard search engines, seemed timely. The embryology of the posterior cranial fossa is complex and relies on a unique timing of various neurovascular and bony elements. Derailment of these developmental processes can lead to a wide range of malformations such as the Chiari malformations...
January 18, 2018: Clinical Anatomy
https://www.readbyqxmd.com/read/29344994/embryology-of-the-craniocervical-junction-and-posterior-cranial-fossa-part-ii-embryogenesis-of-the-hindbrain
#6
Mohammadali M Shoja, Chad J Jensen, Rebecca Ramdhan, Joshua Chern, W Jerry Oakes, R Shane Tubbs
Although pathology of the hindbrain and its derivatives can have life altering effects on a patient, a comprehensive review on its embryology is difficult to find in the peer-reviewed medical literature. Therefore, this review paper, using standard search engines, seemed timely. The embryology of the hindbrain is complex and relies on a unique timing of various neurovascular and bony elements. Derailment of these developmental processes can lead to a wide range of malformations such as the Chiari malformations...
January 18, 2018: Clinical Anatomy
https://www.readbyqxmd.com/read/29344779/trigeminal-neuropathy-in-vestibular-schwannoma-a-treatment-algorithm-to-avoid-long-term-morbidity
#7
Luke Galloway, Nachi Palaniappan, Geoffrey Shone, Caroline Hayhurst
BACKGROUND: Trigeminal neuropathy (TGN) can occur as a presenting feature of vestibular schwannoma (VS) or as an adverse effect of radiosurgery. This study was designed to evaluate a treatment algorithm for presenting symptoms of TGN in patients with VS, and a new radiosurgery dosimetric tolerance to avoid TGN after treatment. Outcome was measured after microsurgery (MS), stereotactic radiosurgery (SRS), hypofractionated stereotactic radiotherapy (HSRT), and fractionated radiotherapy (FRT)...
January 17, 2018: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29339320/primary-obstruction-of-the-foramen-of-luschka-anatomy-histology-and-clinical-significance
#8
Laszlo Barany, Gabor Baksa, Patonay Lajos, Gergely Racz, Oliver Ganslandt, Michael Buchfelder, Peter Kurucz
BACKGROUND: The foramen of Luschka is a natural aperture between the fourth ventricle and the subarachnoid space at the cerebellopontine angle (CPA). Membranous closure of this foramen is referred to as primary obstruction. The available information about this variant and its role in the development of the cysts of the posterior fossa are contradictory in the literature. METHODS: Sixty-one formalin-fixed human brains (122 foramina) were involved in this study. Both the macroscopic and the histological features of the obstructed foramina were examined...
January 12, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29338911/-rosette-forming-glioneuronal-tumor-of-the-fourth-ventricle-two-cases-report-and-literature-review
#9
Bernardino Choque Cuba, José Manuel Ortega Zufiría, Pedro Domingo Poveda Núñez, Noemí Lomillos Prieto, Mario Sierra Rodríguez, Martin Tamarit Degenhardt, Remedios López Serrano, Juan Carlos Gómez Angulo Giner, José Antonio Aramburu González
Rosette-forming glioneuronal tumor of the fourth ventricle is a primary central nervous system tumor introduced in the group of glioneuronal tumors in the WHO classification of 2007. Initially it was described around the fourth ventricle, but recently have been published cases in different locations. We present 2cases of this rare tumor, both surgically treated. The first in a 41 year old man with typical symptoms of posterior fossa injury. The second in an 18 year old woman, with incidental finding of posterior fossa injury that was also surgically treated...
January 12, 2018: Neurocirugía
https://www.readbyqxmd.com/read/29337630/ethnic-differences-in-craniofacial-and-upper-spine-morphology-in-children-with-skeletal-class-ii-malocclusion
#10
Eunhye Oh, Sug-Joon Ahn, Liselotte Sonnesen
OBJECTIVES: To analyze differences in upper cervical spine and craniofacial morphology, including posterior cranial fossa and growth prediction signs, between Danish and South Korean pre-orthodontic skeletal Class II children and to analyze associations between upper cervical spine morphology and craniofacial characteristics. MATERIALS AND METHODS: One hundred forty-six skeletal Class II children-93 Danes (54 boys and 39 girls, mean age 12.2 years) and 53 Koreans (27 boys and 26 girls, mean age 10...
January 16, 2018: Angle Orthodontist
https://www.readbyqxmd.com/read/29336637/post-mortem-diagnosis-of-blake-s-pouch-cyst-a-presentation-of-distended-cyst-at-necropsy
#11
Srividya Sreenivasan, Vishnu Sawant, Joy Ghoshal
BACKGROUND: Blake's pouch cyst forms from non-permeabilization of Blake's pouch. It is difficult to visualize at necropsy as the cyst ruptures easily into the 4th ventricle during dissection. CASE REPORT: Based upon prenatal imaging, delicate dissection allowed post-mortem confirmation of the Blake's pouch cyst. CONCLUSIONS: This highlights the importance of utilizing premortem imaging to help guide the postmortem dissection and documentation of a posterior fossa cyst...
January 16, 2018: Fetal and Pediatric Pathology
https://www.readbyqxmd.com/read/29334768/angular-and-metric-analysis-of-the-neural-structures-in-the-cerebellopontine-angle
#12
Helbert de Oliveira Manduca Palmiero, Marcos Devanir Silva da Costa, Ricardo Lourenço Caramanti, Feres Eduardo Aparecido Chaddad-Neto
INTRODUCTION: The cerebellopontine angle (CPA) is a subarachnoid space in the lateral aspect of the posterior fossa. In this study, we propose a complementary analysis of the CPA from the cerebellopontine fissure. METHODS: We studied 50 hemi-cerebelli in the laboratory of neuroanatomy and included a description of the CPA anatomy from the cerebellopontine fissure and its relationship with the flocculus and the 5th, 6th, 7th, and 8th cranial nerves (CN) origins. RESULTS: The average distance from the 5th CN to the mid-line (ML) was 19...
January 15, 2018: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/29327862/endoscopic-fenestration-of-a-posterior-fossa-arachnoid-cyst-to-treat-a-chiari-like-headache
#13
Matteo Vitali, Andrea Cattalani, Vincenzo M Grasso, Alessandro Bertuccio, Andrea Barbanera
No abstract text is available yet for this article.
January 10, 2018: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/29325939/liponeurocytoma-of-the-cerebello-pontine-angle
#14
Carmela Chiaramonte, Sylvain Rabaste, Timothee Jacquesson, David Meyronet, François Cotton, Emmanuel Jouanneau, Moncef Berhouma
Liponeurocytoma is a very rare tumor classified as grade II (neuronal and mixed neuronal-glial tumors) according to 2016 WHO classification of Tumors of the Central Nervous System. The median age is 50-years-old and the most frequent location is the posterior cranial fossa especially within the cerebellar hemispheres; those arising in the cerebellopontine angle are exceptional. We herein report the clinical, radiological and pathological characteristics of a cerebellopontine angle liponeurocytoma in a 35-year-old woman...
January 8, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29322987/complications-related-to-sitting-position-during-pediatric-neurosurgery-an-institutional-experience-and-review-of-literature
#15
Priyanka Gupta, Girija P Rath, Hemanshu Prabhakar, Parmod K Bithal
BACKGROUND: Sitting position is preferred during posterior fossa surgeries as it provides better anatomical orientation and a clear surgical field. However, its use has been declining due to its propensity to cause life-threatening complications. This study was carried out to analyze the perioperative complications and postoperative course of children who underwent neurosurgery in sitting position. MATERIALS AND METHODS: Medical records of 97 children (<18 years) who underwent neurosurgery in sitting position over a period of 12 years, were retrospectively analyzed...
January 2018: Neurology India
https://www.readbyqxmd.com/read/29318978/cognitive-rehabilitation-of-cerebellar-deficits
#16
Peter Marien, Kim van Dun, Frank Van Overwalle
During the past 3 decades numerous neurophysiological, neuroimaging, experimental and clinical studies have evidenced a crucial role for the cerebellum in cognitive, affective and behavioral functions. As a result of the acknowledged modulatory role of the cerebellum upon remote structures such as the cerebral cortex, cerebellar injury may give rise to a constellation of behavioral, affective and cognitive symptoms (Schmahmann's Syndrome). In sharp contrast to the wide range of therapeutical interventions to treat cognitive and affective disorders following cerebral cortical lesions and despite the consequences of Schmahmann's syndrome upon daily life activities, the literature is surprisingly only scantly documented with studies investigating the impact of cognitive therapies on cerebellar induced cognitive and affective disorders...
January 10, 2018: CNS & Neurological Disorders Drug Targets
https://www.readbyqxmd.com/read/29307024/predictors-of-ventricular-tension-pneumocephalus-after-posterior-fossa-surgery-in-the-sitting-position
#17
Alexandra Sachkova, Timm Schemmerling, Maria Goldberg, Volodymyr Solomiichuk, Veit Rohde, Kajetan L von Eckardstein, Bawarjan Schatlo
BACKGROUND: Ventricular pneumocephalus is a rare but potentially life-threatening complication of cranial surgery in the sitting position. OBJECTIVE: The objective of the study is to assess the incidence and risk factors of postoperative ventricular pneumocephalus. METHODS: We performed a retrospective chart review of 307 consecutive patients (147 men, 160 women) treated at our institution by intracranial surgery in the sitting position from January 2010 to October 2014...
January 6, 2018: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29305758/ventriculostomy-and-risk-of-upward-herniation-in-patients-with-obstructive-hydrocephalus-from-posterior-fossa-mass-lesions
#18
Sherri A Braksick, Benjamin T Himes, Kendall Snyder, Jamie J Van Gompel, Jennifer E Fugate, Alejandro A Rabinstein
BACKGROUND: Patients with posterior fossa lesions causing obstructive hydrocephalus present a unique clinical challenge, as relief of hydrocephalus can improve symptoms, but the perceived risk of upward herniation must also be weighed against the risk of worsening or continued hydrocephalus and its consequences. The aim of our study was to evaluate for clinically relevant upward herniation following external ventricular drainage (EVD) in patients with obstructive hydrocephalus due to posterior fossa lesions...
January 5, 2018: Neurocritical Care
https://www.readbyqxmd.com/read/29303453/stereotactic-radiosurgery-for-who-grade-i-posterior-fossa-meningiomas-long-term-outcomes-with-volumetric-evaluation
#19
Mohana Rao Patibandla, Cheng-Chia Lee, Athreya Tata, Gokul Chowdary Addagada, Jason P Sheehan
OBJECTIVE Research over the past 2 decades has been characterizing the role of stereotactic radiosurgery (SRS) in the treatment of benign intracranial tumors, including meningiomas. However, few studies have examined the long-term outcomes of SRS treatment for posterior fossa meningiomas (PFMs). Furthermore, previous studies have typically used single diameter measurements when reporting outcomes, which can yield misleading results. The authors describe the use of SRS in the treatment of benign WHO grade I PFMs and correlate volumetric analysis with long-term outcomes...
January 5, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29301676/severe-macroglossia-after-posterior-fossa-and-craniofacial-surgery-in-children
#20
J Bouaoud, A Joly, A Picard, B Thierry, E Arnaud, S James, I Hennessy, B McGarvey, P Cairet, A Vecchione, E Vergnaud, C Duracher, R H Khonsari
Massive swelling of the tongue can occur after posterior fossa and craniofacial surgery. Several hypotheses have been proposed to explain the occurrence of such severe postoperative macroglossia, but this phenomenon is still poorly understood. Severe postoperative macroglossia can be a life-threatening condition due to upper airway obstruction. Three cases of severe postoperative macroglossia that occurred after cervical spine, craniofacial, and posterior fossa surgical procedures are reported here. These cases required specialized maxillofacial management and a prolonged stay in the intensive care unit...
January 1, 2018: International Journal of Oral and Maxillofacial Surgery
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