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Craniocervical

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https://www.readbyqxmd.com/read/27920871/suprasellar-pilocytic-astrocytoma-in-an-adult-with-hemorrhage-and-leptomeningeal-dissemination-case-report-and-review-of-literature
#1
Radwa K Soliman, Caterina Budai, Pravin Mundada, Bakar Aljohani, Elisabeth J Rushing, Spyros S Kollias
Pilocytic astrocytoma (PA) is a low-grade tumor. It has an excellent prognosis after total resection. Leptomeningeal dissemination and hemorrhage are very rare to be associated with PA and lead to unfavorable prognosis. A 35-year-old man was diagnosed with a hemorrhagic suprasellar PA in 2006. Subsequent examination in 2007 revealed another large subdural hemorrhagic lesion in the sacral region, which proved to be PA by histopathologic assessment. Other leptomeningeal foci were discovered mainly at the craniocervical junction...
December 2016: Radiology case reports
https://www.readbyqxmd.com/read/27919237/a-novel-ano3-variant-identified-in-a-53-year-old-woman-presenting-with-hyperkinetic-dysarthria-blepharospasm-hyperkinesias-and-complex-motor%C3%A2-tics
#2
Patrick R Blackburn, Michael T Zimmermann, Jennifer M Gass, Kimberly G Harris, Margot A Cousin, Nicole J Boczek, Owen A Ross, Eric W Klee, Paul W Brazis, Jay A Van Gerpen, Paldeep S Atwal
BACKGROUND: Cervical dystonias have a variable presentation and underlying etiology, but collectively represent the most common form of focal dystonia. There are a number of known genetic forms of dystonia (DYT1-27); however the heterogeneity of disease presentation does not always make it easy to categorize the disease by phenotype-genotype comparison. CASE PRESENTATION: In this report, we describe a 53-year-old female who presented initially with hand tremor following a total hip arthroplasty...
December 5, 2016: BMC Medical Genetics
https://www.readbyqxmd.com/read/27910093/headache-attributed-to-craniocervical-dystonia-a-little-known-headache
#3
Marcos Eugenio Ramalho Bezerra, Pedro Augusto Sampaio Rocha-Filho
BACKGROUND: Craniocervical dystonia is a focal or segmental dystonia in its distribution, classically known as spasmodic torticollis when in its pure cervical presentation. Although craniocervical dystonia has been recognized as a possible cause of headache since the publication of the second version of International Classification of Headache Disorders, there are few studies about this entity. METHOD: This was a narrative review. RESULTS: Craniocervical dystonia was associated with muscle pain in 67-89% of the cases...
December 2, 2016: Headache
https://www.readbyqxmd.com/read/27894543/relationship-between-head-posture-and-the-severity-of-obstructive-sleep-apnea
#4
Oral Sökücü, Rıdvan Okşayan, Meral Uyar, Kadriye Ebru Ademci, Serdar Üşümez
INTRODUCTION: The objective of this study was to compare the head posture of patients with obstructive sleep apnea (OSA) having different levels of severity with that of control subjects. METHODS: One hundred subjects participated in this study. Seventy-five subjects underwent overnight polysomnography in a sleep laboratory and were allocated into "mild," "moderate," or "severe" OSA groups, and 25 subjects with no complaints regarding OSA were allocated into 1 group and served as the controls...
December 2016: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/27891038/accessory-atlantoaxial-ligament-avulsion-fracture-of-the-axis-are-there-any-clinical-implications
#5
Hamid Reza Niknejad, Frank van Calenbergh, Philippe Demaerel, Johannes van Loon
Injuries to the craniocervical support structures are frequently observed in neurotrauma cases. Stability of this region is of vital importance. Literature has mainly focused on three major ligaments of the craniocervical junction: The tectorial membrane, the transverse ligament, and the alar ligaments. However, the accessory atlantoaxial ligament (ALL) also seems to be involved in craniocervical stability as shown in cadaveric specimens. Still, the biomechanical importance of this structure needs to be determined, especially in trauma settings...
October 2016: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/27890761/the-coexistence-of-extradural-arteriovenous-fistula-and-soft-tissue-arteriovenous-malformation-within-the-same-metamere
#6
Nobuhiko Arai, Takenori Akiyama, Kazunari Yoshida
BACKGROUND: -Spinal arteriovenous shunts are a common spinal vascular disorder. However, they can have a misleading clinical presentation and poor prognosis. They are classified into 4 types according to shunt points and drainage route, among which extradural arteriovenous fistula (eAVF) is the most rare, comprising only 1% of all spinal arteriovenous shunts. Here, we report an extremely rare case of coexistent eAVF at the craniocervical junction and soft tissue arteriovenous malformation (AVM) within the same metamere...
November 24, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27886884/classification-and-management-of-pediatric-craniocervical-injuries
#7
REVIEW
Hannah E Goldstein, Richard C E Anderson
This article addresses the key features, clinical presentation, patterns of injury, indicated workup, and radiographic findings associated with craniocervical injuries in the pediatric population. It discusses nonsurgical and surgical management of pediatric cervical spine trauma, addressing when each is indicated, and the various techniques available to the pediatric neurosurgeon.
January 2017: Neurosurgery Clinics of North America
https://www.readbyqxmd.com/read/27879509/surgical-site-infections-following-the-transoral-approach-a-review-of-172-consecutive-cases
#8
QingShui Yin, Hong Xia, ZengHui Wu, XiangYang Ma, FuZhi Ai, Kai Zhang, JianHua Wang, Tao Zhang, ZhaoHui Bai, ZhiYun Wang
STUDY DESIGN: A retrospective review. OBJECTIVE: The aim of this study was to discuss the characteristics, treatment, and incidence of surgical site infection (SSI) following transoral approach surgery. SUMMARY OF BACKGROUND DATA: One of the primary risks associated with transoral approach surgery is postoperative SSI. Few reports exist detailing the specific circumstances, treatment options, and incidence of SSIs following transoral approach surgery in a large series of consecutive cases...
December 2016: Clinical Spine Surgery
https://www.readbyqxmd.com/read/27873124/carotid-and-vertebral-dissection-imaging
#9
REVIEW
Hakeem J Shakir, Jason M Davies, Hussain Shallwani, Adnan H Siddiqui, Elad I Levy
Carotid or vertebral artery dissection is the result of a tear in the vessel lining wherein the intima separates the media. This creates a false or pseudo lumen, often accompanied by hemorrhage into the arterial wall. Dissection of these craniocervical vessels often manifests with pain alone but, if untreated, may result in severe neurologic compromise. The causes of dissection are multifactorial, including spontaneous, iatrogenic, and traumatic insults. Regardless of etiology, treatment consists primarily of anticoagulation, whereas endovascular therapy is reserved for cases with persistent thrombus or flow limitation...
December 2016: Current Pain and Headache Reports
https://www.readbyqxmd.com/read/27869624/surgical-outcome-and-prognostic-analysis-of-transoral-atlantoaxial-reduction-plate-system-for-basilar-invagination-a-voxel-based-morphometry-study
#10
Gejin Wei, Chenglong Shi, Zhiyun Wang, Hong Xia, Qingshui Yin, Zenghui Wu
BACKGROUND: The use of a transoral atlantoaxial reduction plate (TARP) system is an effective surgical approach for the treatment of basilar invagination. With the aim of improving the therapeutic efficacy of the TARP operation, we conducted a voxel-based morphometric study to quantitatively investigate the descent of the odontoid process and craniocervical volume changes. METHODS: We enrolled 20 patients with basilar invagination who underwent a TARP procedure...
October 19, 2016: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/27857798/not-all-cases-of-nyctalopia-are-benign-unusual-and-serendipitous-presentation-of-arnold-chiari-type-1-malformation-at-a-pediatric-tertiary-care-center
#11
Kailash Chandra Patra, Abhijeet Prakash Kirtane
The Arnold-Chiari Type 1 malformation (CM1) is a rare congenital abnormality characterized by ectopia or caudal herniation of the cerebellar tonsils through the foramen magnum into the cervical spine, resulting in crowding at the craniocervical junction. It seldom presents in childhood with symptoms and a normal neurological examination. More typically, CM1 presents in young adult women with neurological symptoms including a headache, cervical pain, cranial nerve palsies, neurosensory deficit, and ataxia. Ocular manifestations associated with Chiari I include third and sixth cranial nerve paresis and convergence/divergence abnormalities...
July 2016: Journal of Pediatric Neurosciences
https://www.readbyqxmd.com/read/27834549/differential-strength-and-endurance-parameters-of-the-craniocervical-and-cervicothoracic-extensors-and-flexors-in-healthy-individuals
#12
Shaun O Leary, Charlotte Loraas Fagermoen, Hiroyuki Hasegawa, Ann-Sofi Slettevold Thorsen, Luke Van Wyk
This study examined isometric strength (maximal voluntary contraction (MVC)) and endurance of cervical flexor and extensor muscles in healthy individuals at the craniocervical (CC) and cervicothoracic (CT) axes. MVC and endurance measures (time to task failure in seconds (s)) at 50% MVC were recorded in 4 directions (CC flexion, CC extension, CT flexion and CT extension) in 20 males and 20 females and six strength and endurance ratios were calculated. The findings showed that the cervical extensor muscles are not only much stronger than the flexors (1...
November 11, 2016: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/27816894/c2-dumbbell-shaped-peripheral-nerve-sheath-tumors-surgical-management-and-relationship-with-venous-structures
#13
Zuowei Wang, Xingwen Wang, Hao Wu, Zan Chen, Qingguo Yuan, Fengzeng Jian
OBJECTIVES: This study focuses on the adjacent venous structures of tumors and their treatment in patients with second cervical (C2) dumbbell-shaped peripheral nerve sheath tumors (PNSTs). PATIENTS AND METHODS: The authors retrospectively analyzed the clinical outcome and the venous structures involved with tumors in 16 patients with C2 dumbbell-shaped PNSTs treated surgically between 2008 and 2015. RESULTS: The venous structures at the craniocervical junction could be visualized in all 16 patients on contrast-enhanced T1-weighted magnetic resonance imaging...
October 24, 2016: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/27815845/the-craniocervical-junction-embryology-anatomy-biomechanics-and-imaging-in-blunt-trauma
#14
REVIEW
Curtis Edward Offiah, Emily Day
: Imaging of the blunt traumatic injuries to the craniocervical junction can be challenging but central to improving morbidity and mortality related to such injury. The radiologist has a significant part to play in the appropriate management of patients who have suffered injury to this vital junction between the cranium and the spine. Knowledge of the embryology and normal anatomy as well as normal variant appearances avoids inappropriate investigations in these trauma patients. Osseous injury can be subtle while representing important radiological red flags for significant underlying ligamentous injury...
November 4, 2016: Insights Into Imaging
https://www.readbyqxmd.com/read/27800002/single-stage-operation-for-giant-schwannoma-at-the-craniocervical-junction-with-minimal-laminectomy-a-case-report-and-literature-review
#15
Sun Yoon, Hunho Park, Kyu-Sung Lee, Seoung Woo Park, Chang-Ki Hong
Here we report a single-stage operation we performed on a patient with a large schwannoma that extended from the lower clivus to the cervico-thoracic junction caudally. A number of authors have previously performed multilevel laminectomy to remove giant schwannomas that extend for considerable length. This technique has caused cervical instability such as kyphosis or gooseneck deformity on several occasions. We removed the tumor with a left lateral suboccipital craniectomy with laminectomy only at C1 and without any subsequent surgery-related neurologic deficits...
September 2016: Korean Journal of Spine
https://www.readbyqxmd.com/read/27781048/internal-carotid-artery-s-shaped-curve-as-a-marker-of-fibromuscular-dysplasia-in-dissection-related-acute-ischemic-stroke
#16
Diogo C Haussen, Ashutosh Jadhav, Leticia C Rebello, Samir Belagaje, Aaron Anderson, Tudor Jovin, Amin Aghaebrahim, Deepak Gulati, Bryan Wells, Michael Frankel, Raul G Nogueira
BACKGROUND AND PURPOSE: Craniocervical fibromuscular dysplasia (FMD) is associated with dissections and with S-shaped curves in the internal carotid artery (ICA). We evaluated the occurrence of S-curves in patients presenting with acute strokes due to ICA steno-occlusive dissections. METHODS: This was a retrospective review of the interventional databases of two academic tertiary-care institutions. The presence of ICA S-shaped curves, C-shaped curves, 360-degree loops, as well as classic FMD and atherosclerotic changes at the ICA bulb and curve/loop was determined...
September 2016: Interventional Neurology
https://www.readbyqxmd.com/read/27779604/the-prediction-and-prevention-of-dysphagia-after-occipitospinal-fusion-by-use-of-the-s-line-swallowing-line
#17
Shuichi Kaneyama, Masatoshi Sumi, Masato Takabatake, Koichi Kasahara, Aritetsu Kanemura, Hiroaki Hirata, Bruce V Darden
STUDY DESIGN: Clinical case series and risk factor analysis of dysphagia after occipitospinal fusion (OSF). OBJECTIVE: To develop new criteria to avoid postoperative dysphagia by analyzing the relationship among the craniocervical alignment, the oropharyngeal space and the incidence of dysphagia after OSF. SUMMARY OF BACKGROUND DATA: Craniocervical malalignment after OSF is considered to be one of the primary triggers of postoperative dysphagia...
October 24, 2016: Spine
https://www.readbyqxmd.com/read/27768618/absent-vascular-signal-on-time-of-flight-magnetic-resonance-angiography-due-to-recent-ferumoxytol-infusion
#18
Aparna Singhal, Joel K Curé
Time-of-flight magnetic resonance angiography is used for craniocervical arterial evaluation. Absent flow-related signal may be the result of slow flow, complex flow, or focal susceptibility effects. We report a case with complete absence of flow-related signal in the intracranial and cervical vessels due to ferumoxytol infusion given 5 days before magnetic resonance angiography. Ferumoxytol is a newly approved parenteral therapy for iron-deficiency anemia in patients with renal failure and awareness of this drug-magnetic resonance imaging interaction is needed...
October 20, 2016: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/27760504/relationship-between-craniocervical-orientation-and-center-of-force-of-occlusion-in-adults
#19
Curtis D Westersund, Jeffrey Scholten, Raymond J Turner
OBJECTIVE: Clinical observation and anecdotal reports suggest changes can occur to dental occlusion following intervention with the National Upper Cervical Chiropractic Association (NUCCA) procedure. This case controlled study discerned if occlusion changes are measurable using a dental force plate (T-Scan®) following an adjustment to the craniocervical junction (CCJ). METHODS: A degree of case control was established by active patients being assessed twice prior to and following intervention...
October 20, 2016: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/27744083/detethering-of-the-c2-nerve-root-and-avoidance-of-transection-and-injury-during-c1-screw-placement-a-cadaveric-feasibility-study
#20
Christian Fisahn, Jaspreet Johal, Marc Moisi, Joe Iwanaga, Rod J Oskouian, Jens R Chapman, R Shane Tubbs
INTRODUCTION: Regional neurovascular structures must be avoided during invasive spine hardware placement. During C1 lateral mass screw placement, the C2 nerve root is put in harm's way. Therefore, the current anatomical study was performed to identify techniques that might avoid such neural injury. MATERIALS AND METHODS: On 10 cadaveric sides, dissection was carried down to the craniocervical junction. The C2 nerve root was identified and its distal branches traced out into the surrounding posterior cervical musculature...
October 12, 2016: World Neurosurgery
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