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https://www.readbyqxmd.com/read/29790722/minimally-invasive-endoscopic-assisted-approaches-to-the-posterior-fossa
#1
Alexander Yang, Zach Folzenlogen, A Samy Youssef
Modern surgical approaches are becoming more minimalistic, associated with the term 'minimally invasive'. The endoscope provides a more panoramic anatomical view in addition to the ability to access narrow deep corners with decent illumination and clear visualization. Endoscopic assisted microsurgery through a tailored small craniotomy is the foundation of keyhole surgery. The endoscope can be advanced deeper into the field, thus enhancing an exposure and allowing bimanual dissection, thus prompting smaller craniotomies and tailored key exposures...
May 22, 2018: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/29789138/introduction-to-primary-hemifacial-spasm-a-neurosurgical-disease
#2
P Mercier, M Sindou
Primary hemifacial spasm is a hyperactive cranial nerve syndrome. The cause is always a neurovascular compression, generally at the root exit zone from the brainstem. Its curative treatment is microvascular compression, that may be performed as a first option, or secondarily when botulinum toxin injections fail.
May 19, 2018: Neuro-Chirurgie
https://www.readbyqxmd.com/read/29788437/retromastoid-approach-for-posterior-fossa-skull-base-rosai-dorfman-disease-a-rare-pathology-3-dimensional-operative-video
#3
Anil Nanda, Amey R Savardekar, Devi Prasad Patra, Rimal Hanif Dossani, Maria-Magdalena Georgescu
Rosai-Dorfman disease, originally described by Juan Rosai and Ronald F. Dorfman, is a rare benign histiocytic proliferative disorder, classically presenting with massive lymphadenopathy and a self-limiting clinical course.1 Isolated intracranial skull base involvement is extremely rare and often resembles meningiomas, schwannomas, or other benign skull base lesions.2 The disease is difficult to diagnose radiographically, and tissue diagnosis with open skull base approaches has significant perioperative risks...
May 21, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29788281/a-method-for-cranial-nerve-xi-silencing-during-surgery-of-the-foramen-magnum-region-technical-case-report
#4
Derek G Southwell, Jonathan D Breshears, William R Lyon, Michael W McDermott
BACKGROUND AND IMPORTANCE: Skull base surgery involves the microdissection and intraoperative monitoring of cranial nerves, including cranial nerve XI (CN XI). Manipulation of CN XI can evoke brisk trapezius contraction, which in turn may disturb the surgical procedure and risk patient safety. Here we describe a method for temporarily silencing CN XI via direct intraoperative application of 1% lidocaine. CLINICAL PRESENTATION: A 41-yr-old woman presented with symptoms of elevated intracranial pressure and obstructive hydrocephalus secondary to a hemangioblastoma of the right cerebellar tonsil...
May 18, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29788154/macrovascular-decompression-of-facial-nerve-with-anteromedial-transposition-of-a-dolichoectatic-vertebral-artery-3-dimensional-operative-video
#5
Halima Tabani, Sonia Yousef, Jan-Karl Burkhardt, Sirin Gandhi, Arnau Benet, Michael T Lawton
Most cranial nerve compression syndromes (ie, trigeminal neuralgia and hemifacial spasm) are caused by small arteries impinging on a nerve and are relieved by microvascular decompression. Rarely, cranial nerve compression syndromes can be caused by large artery impingement and can be relieved by macrovascular decompression. When present, this compression often occurs in association with degenerative atherosclerosis in the vertebral arteries (VA) and basilar artery. Conservative treatment is recommended for mild forms, but surgical transposition of the VA away from the root entry zone (REZ) can be considered...
May 21, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29786481/rat-cranial-bone-derived-mesenchymal-stem-cell-transplantation-promotes-functional-recovery-in-ischemic-stroke-model-rats
#6
Masaru Abiko, Takafumi Mitsuhara, Takahito Okazaki, Takeshi Imura, Kei Nakagawa, Takashi Otsuka, Jumpei Oshita, Masaaki Takeda, Yumi Kawahara, Louis Yuge, Kaoru Kurisu
The functional disorders caused by central nervous system (CNS) diseases, such as ischemic stroke, are clinically incurable and current treatments have limited effects. Previous studies suggested that cell-based therapy using mesenchymal stem cells (MSCs) exerts therapeutic effects for ischemic stroke. In addition, the characteristics of MSCs may depend on their sources. Among the derived tissues of MSCs, we have focused on cranial bones originating from the neural crest. We previously demonstrated that the neurogenic potential of human cranial bone-derived MSCs (cMSCs) was higher than that of human iliac bone-derived MSCs...
May 22, 2018: Stem Cells and Development
https://www.readbyqxmd.com/read/29781167/episodic-ophthalmoplegia-and-headache-with-cranial-nerve-iii-enhancement-on-mri
#7
Andrew Hurd, Tonia Sabo
No abstract text is available yet for this article.
May 20, 2018: Headache
https://www.readbyqxmd.com/read/29780939/sixth-cranial-nerve-palsy-and-ipsilateral-trigeminal-neuralgia-caused-by-vertebrobasilar-dolichoectasia
#8
Thong Pham, Jeffrey Wesolowski, Jonathan D Trobe
Purpose: To report an unusual case of vertebrobasilar dolichoectasia causing both trigeminal neuralgia and ipsilateral sixth cranial nerve palsy. Observations: A patient had undergone surgical decompression of trigeminal neuralgia caused by dolichoectatic vertebral and basilar arteries years before presenting with ipsilateral sixth nerve palsy. Brain MRI showed deviant vertebrobasilar arteries that presumably now compressed the sixth cranial nerve. The unaffected left sixth cranial nerve was visible on MRI, but the affected right sixth cranial nerve was not...
June 2018: American Journal of Ophthalmology Case Reports
https://www.readbyqxmd.com/read/29780925/ocular-involvement-in-neurolymphomatosis
#9
Katy C Liu, Meridith A Hennessey, Chad M McCall, Alan D Proia
Purpose: To describe the ophthalmic symptoms and histopathological findings in a case of primary neurolymphomatosis (NL). Observations: A man in his 60s with a prior diagnosis of chronic inflammatory demyelinating polyneuropathy developed facial numbness, diplopia, drooling, and difficulty swallowing. Over a 3-month period, he developed total ptosis and ophthalmoplegia of the right eye with a dilated, non-reactive pupil considered secondary to cranial nerve III and VI palsies...
June 2018: American Journal of Ophthalmology Case Reports
https://www.readbyqxmd.com/read/29780700/sporadic-nf2-mosaic-multiple-spinal-schwannomas-presenting-with-severe-intractable-pain-following-pregnancy
#10
Jeffrey H Zimering, Bryan D Choi, Matthew J Koch, John C Dewitt, Anat Stemmer-Rachamimov, John H Shin
The aim of the present paper is to report undiagnosed sporadic neurofibromatosis type 2 presenting with symptomatic compressive spinal tumors following pregnancy. A 36-year-old woman experienced progressive, severe lumbar radicular pain in the second trimester of pregnancy which became intractable soon after delivery. Magnetic resonance imaging revealed a complex heterogeneous hypointense mass lesion around the conus. There were two small punctate lesions in the cauda equina suggestive of myxopapillary ependymoma with 'drop metastases...
December 2017: Interdisciplinary Neurosurgery: Advanced Techniques and Case Management
https://www.readbyqxmd.com/read/29779709/a-mutation-in-transcription-factor-mafb-causes-focal-segmental-glomerulosclerosis-with-duane-retraction-syndrome
#11
Yoshinori Sato, Hiroyasu Tsukaguchi, Hiroyuki Morita, Koichiro Higasa, Mai Thi Nhu Tran, Michito Hamada, Toshiaki Usui, Naoki Morito, Shoichiro Horita, Takao Hayashi, Junko Takagi, Izumi Yamaguchi, Huan Thanh Nguyen, Masayo Harada, Kiyoko Inui, Yuichi Maruta, Yoshihiko Inoue, Fumihiko Koiwa, Hiroshi Sato, Fumihiko Matsuda, Shinya Ayabe, Seiya Mizuno, Fumihiro Sugiyama, Satoru Takahashi, Ashio Yoshimura
Focal segmental glomerulosclerosis (FSGS) is a leading cause of end-stage renal disease in children and adults. Genetic factors significantly contribute to early-onset FSGS, but the etiologies of most adult cases remain unknown. Genetic studies of monogenic syndromic FSGS exhibiting extra-renal manifestations have uncovered an unexpected biological role for genes in the development of both podocytes and other cellular lineages. To help define these roles, we studied two unrelated families with FSGS associated with Duane Retraction Syndrome, characterized by impaired horizontal eye movement due to cranial nerve malformation...
May 17, 2018: Kidney International
https://www.readbyqxmd.com/read/29777894/endoscopic-transnasal-resection-of-solitary-fibrous-tumor-in-the-optic-canal
#12
Seiei Torazawa, Masahiro Shin, Hirotaka Hasegawa, Ryohei Otani, Keisuke Ueki, Nobuhito Saito
BACKGROUND: Tumors extending into the optic canal can cause progressive visual impairment due to optic nerve compression, and prompt surgical resection is often necessary. When the tumor is located medially in the optic canal, endoscopic transnasal surgery provides a safer, less invasive alternative to trans-cranial approach. CASE DESCRIPTION: We recently encountered a case of small solitary fibrous tumor in the optic canal causing rapid visual deterioration. The radiographic findings of pre-operative imaging studies were compatible with those of meningioma; however, unlike meningioma, bleeding from the tumor was very profuse during the operation...
May 16, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29777207/clinical-progression-and-metachronous-paragangliomas-in-a-large-cohort-of-sdhd-germline-variant-carriers
#13
Berdine L Heesterman, Lisa M H de Pont, Andel Gl van der Mey, Jean-Pierre Bayley, Eleonora Pm Corssmit, Frederik J Hes, Berit M Verbist, Peter Paul G van Benthem, Jeroen C Jansen
Although it is well established that paternally transmitted germline variants in SDHD are associated with multifocal paragangliomas and lifelong follow-up is generally advised, the risk of metachronous lesions is presently unknown. In a large Dutch cohort of SDHD variant carriers, we studied the development of new paragangliomas, and the evolution of symptoms and cranial nerve impairment. Recurrent event analysis and the Kaplan-Meier product limit estimator were used to study the risk of new lesions. The relation between several predictors and development of new symptoms was assessed using logistic regression...
May 18, 2018: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/29774172/moebius-syndrome-with-hypoglossal-palsy-syndactyly-brachydactyly-and-anisometropic-amblyopia
#14
Muhammad Hassaan Ali, Samreen Jamal, Muhammad Ather Rashid, Usman Javaid, Nadeem Hafeez Butt
Moebius syndrome is a rare cause of congenital facial and abducens palsy.  It is sometimes associated with musculoskeletal abnormalities and other cranial nerve palsies. Genetics and ischemic insults to the fetus are considered to be the cause of this syndrome. We report here a 12-year-old female patient who was presented to us with poor cosmesis of her face, with associated decreased vision and lagophthalmos in her left eye. She didn't have any signs of exposure keratopathy in the affected eye. Her best-corrected vision was 20/20 and 20/60 in right and left eyes respectively...
March 16, 2018: Curēus
https://www.readbyqxmd.com/read/29771051/-a-case-report-ramsay-hunt-syndrome-with-throat-as-starting-place-merger-ipsilateral-cranial-nerver-involvement
#15
G Liu, L Chang, Y Xin, H Yang, X H Zhang, Z C Chen, Q Zhang
The clinical data of a case of Ramsay Hunt syndrome concurrent with ipsilateral Ⅴ, Ⅶ, Ⅷ, Ⅸ, Ⅹ, Ⅺ cranial nerves paralysis with throat as starting place was retrospectively analyzed, and the relevant literatures were also reviewed. The case is rare, so the relevant clinical reports are less. It is important to take the objective data as well as subjective symptoms of the patients into consideration to make a definite diagnosis, so that we can treat it as soon as possible to achieve better curative effect...
May 20, 2017: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
https://www.readbyqxmd.com/read/29770635/clinical-course-and-prognostic-factors-of-acquired-third-fourth-and-sixth-cranial-nerve-palsy-in-korean-patients
#16
Kiyoung Kim, Sung Rae Noh, Min Seok Kang, Kyung Hyun Jin
PURPOSE: This study aimed to evaluate the clinical course and prognostic factors of acquired third, fourth, and sixth cranial nerve (CN) palsy grouped according to etiology. METHODS: This study involved a retrospective review of the medical records of 153 patients who were diagnosed with acquired paralytic strabismus from January 2004 to July 2015. Outcomes, recovery rates, and time to recovery were investigated according to the affected CN: CN3, CN4, and CN6 palsies...
March 20, 2018: Korean Journal of Ophthalmology: KJO
https://www.readbyqxmd.com/read/29766943/brain-stem-hemangioblastomas-the-seemingly-innocuous-lesion-in-a-perilous-location
#17
Jeena Joseph, Sanjay Behari, Shruti Gupta, Kamlesh Singh Bhaisora, Anish Gandhi, Arun Srivastava, Awadhesh K Jaiswal
Introduction: Hemangioblastomas [75% sporadic, 25% with Von Hippel Lindau (VHL) disease] are highly vascular, benign lesions. The surgical nuances, management, and complication avoidance in brain-stem hemangioblastomas (BHs) have been studied. Material and Methods: Over 18 years, 27(mean age: 29 years; range 15-60 years) consecutive cases of BH underwent microsurgical excision. All patients were assessed clinico-radiologically for neurological deficits and screened for VHL disease...
May 2018: Neurology India
https://www.readbyqxmd.com/read/29765828/a-cross-sectional-survey-of-the-north-american-skull-base-society-on-vestibular-schwannoma-part-2-perioperative-practice-patterns-of-vestibular-schwannoma-in-north-america
#18
Jamie J Van Gompel, Matthew L Carlson, R Mark Wiet, Nicole M Tombers, Anand K Devaiah M, Devyani Lal, Jacques J Morcos, Michael J Link
Introduction  Perioperative care of vestibular schwannoma (VS) patients is extremely variable across surgeons and institutions making practice patterns difficult to standardize. No data currently exist detailing this practice variability. Methods  The North American Skull Base Society membership was electronically surveyed regarding perioperative care of surgically operated VS patients. Results  There were 87 respondents to the survey. Surgical positioning, surgical approach utilized, and perioperative medical adjuncts are quite variable...
June 2018: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/29764702/a-novel-neuromodulation-technique-for-the-rehabilitation-of-balance-and-gait-a-case-study
#19
L Eduardo Cofré Lizama, Andisheh Bastani, Maya G Panisset, Katharine Drummond, Fary Khan, Mary P Galea
Cranial-nerve non-invasive neuromodulation (CN-NINM) through the tongue has been proposed as an adjuvant intervention to improve efficacy of rehabilitation. However, CN-NINM effects have only been explored in multiple sclerosis and stroke populations. In this report we used CN-NINM during a 2-week (2 × 1.5 h sessions daily) physiotherapy program for the rehabilitation of a 57 y/o woman presenting with balance and gait impairments after a surgical resection of a fourth ventricular ependymoma. Clinical and instrumented balance and gait assessments showed improved performance in all tests and without adverse effects This study shows the beneficial effects and feasibility of combined physiotherapy and CN-NINM in this patient...
May 12, 2018: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29764030/-neuroendoscopy-assisted-microneurosurgery-for-posterior-cranial-fossa-lesion
#20
J Li, D Zhong, D Lü, H Y Huang, W Du, J Yang, Y T Wu, H J Xia, W Y Tang, X C Sun
Objective: To study the value of neuroendoscopy assisted microneurosurgery technique in the treatment of posterior cranial fossa lesion. Methods: Clinical data of 36 patients with posterior fossa lesions who accepted neuroendoscopy assisted microneurosurgery (NEAM group) in the department of neurosurgery of the First Affiliated Hospital of Chongqing Medical University, from January 2014 to December 2016, were retrospectively enrolled. A total of 113 cases diagnosed with the same lesions and accepted conventional microneurosurgery (non-NEAM group) in the same period were analyzed as control group...
May 8, 2018: Zhonghua Yi Xue za Zhi [Chinese medical journal]
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