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https://www.readbyqxmd.com/read/27899081/endoscopic-endonasal-pituitary-adenomas-surgery-the-surgical-experience-of-178-consecutive-patients-and-learning-curve-of-two-neurosurgeons
#1
Xuefei Shou, Ming Shen, Qilin Zhang, Yichao Zhang, Wenqiang He, Zengyi Ma, Yao Zhao, Shiqi Li, Yongfei Wang
BACKGROUND: We aim to study surgical technique and analyze the related factors affecting tumor total removal and postoperative endocrinological remission for endoscopic endonasal pituitary adenomas surgery. METHODS: We retrospectively analyzed 178 endoscopic endonasal pituitary adenomas surgery from March 2011 to May 2014. Endonasal approach included the routine transnasal-sphenoidal approach, transnasal- maxillary sinus approach in four cases and transnasal-clivus approach in one case...
November 30, 2016: BMC Neurology
https://www.readbyqxmd.com/read/27894664/tomographic-osteometry-of-the-zygomatic-bone-applied-to-traumatology-of-facial-bones-preliminary-retrospective-study-of-zygomatic-summit-in-28-patients
#2
Barbara Lerhe, Sarah Alshehri, Denis Ferachon, Sébastien Dejean, Anne Sophie Salabert, Raphael Lopez
BACKGROUND: The available referential measures defining the zygomatic bone morphology are adequate enough for full determination of the zygoma positioning, especially for trauma surgery, but osteometric analysis of the zygoma positioning based on tomographic examinations could be useful in peroperative and postoperative imaging. In this study, we propose referential measures, taking into account the morphology and the symmetry of the zygoma. In addition, the reliability and reproducibility are considered...
October 28, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/27891029/craniovertebral-junction-360%C3%A2-a-combined-microscopic-and-endoscopic-anatomical-study
#3
Sukhdeep Singh Jhawar, Maximiliano Nunez, Paolo Pacca, Daniel Seclen Voscoboinik, Huy Truong
OBJECTIVES: Craniovertebral junction (CVJ) can be approached from various corridors depending on the location and extent of disease. A three-dimensional understanding of anatomy of CVJ is paramount for safe surgery in this region. Aim of this cadaveric study is to elucidate combined microscopic and endoscopic anatomy of critical neurovascular structures in this area in relation to bony and muscular landmarks. MATERIALS AND METHODS: Eight fresh-frozen cadaveric heads injected with color silicon were used for this study...
October 2016: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/27888089/quantitative-measurements-of-the-skull-base-and-craniovertebral-junction-in-congenital-occipitalization-of-the-atlas-a-ct-based-anatomical-study
#4
Rui Zong, Yiheng Yin, Guangyu Qiao, Yazhou Jin, Xinguang Yu
BACKGROUND: To study the craniovertebral junction (CVJ) and determine the anatomical characteristics of occipitalization of the atlas (OC) by computed tomography imaging. METHODS: We retrospectively reviewed 80 cases of patients with OC who underwent cervical CT scanning between March 2012 and March 2014. Forty healthy subjects were recruited as a control cohort. Fusion pattern and associated osseous anomalies were recorded. Fifteen linear quantitative parameters were measured to study the outlet of the foramen magnum, angular dimension of the skull base, posterior cranial fossa, and height of the odontoid process...
November 22, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27876137/cathepsin-k-the-association-between-cathepsin-k-expression-and-sphenoid-sinus-invasion-of-pituitary-adenomas
#5
Hongyan Liu, Guoqi Wang, Weijun Gu, Yiming Mu
Pituitary adenomas with sphenoid sinus or clivus invasion are not uncommon, but the pathogenesis responsible for this phenomenon remains unclear. Cathepsin K, expressed predominantly in osteoclasts, can degrade type I collagen and plays an essential role in bone resorption. Recent studies reported the expression of Cathepsin K in various malignant tumors, such as bone, breast, lung and prostate cancers, and its expression is further increased in bone metastasis or invasive subpopulations. In addition, cathepsin K inhibitors (CatKi) were demonstrated to effectively prevent or reduce osteolytic lesions in breast cancers with bone metastasis...
December 2016: Medical Hypotheses
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
#6
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/27857875/dual-endoscopic-endonasal-transsphenoidal-and-precaruncular-transorbital-approaches-for-clipping-of-the-cavernous-carotid-artery-a-cadaveric-simulation
#7
Jeremy Ciporen, Brandon Lucke-Wold, Aclan Dogan, Justin S Cetas, William E Cameron
Background Endoscopic skull base approaches are being used to address complicated neurovascular pathology. These approaches are safest when proximal vascular control of the cavernous carotid artery (CavCA) can be obtained. Methods We present a cadaver-based anatomic simulation study showing the feasibility of clip placement for the CavCA as it courses through the cavernous sinus. The arterial vessels were injected with red microfil (Flow Tech, Carver, Massachusetts) to enhance visibility. The endoscope was directed through a precaruncular transorbital approach and instrumentation was managed through an endonasal transsphenoidal approach...
December 2016: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/27833323/tc-99m-trodat-uptake-in-an-osteoid-tumor-of-clivus
#8
Sameer Taywade, Madhavi Tripathi, Vivek Tandon, Chandan Jyoti Das, Nishikant Avinash Damle, Shamim Ahmed Shamim, Parul Thukral, Chandrasekhar Bal
Tc-99m TRODAT is cocaine analog and binds to the dopamine transporter in vivo. Tc-99m TRODAT single-photon emission computed tomography/computed tomography. (SPECT/CT) is useful for demonstrating presynaptic dopaminergic dysfunction in patients with Parkinsonism. However, few reports have shown extrastriatal uptake of Tc-99m TRODAT. We present the case of a 67-year-old male who underwent Tc-99m TRODAT SPECT/CT for evaluation of Parkinsonism. In addition to tracer binding in the striatum, tracer uptake was noted in an osteoid tumor of the clivus...
October 2016: Indian Journal of Nuclear Medicine: IJNM: the Official Journal of the Society of Nuclear Medicine, India
https://www.readbyqxmd.com/read/27830873/kinematic-mri-study-of-the-brain-stem-and-cervical-cord-by-dynamic-neck-motion
#9
Miloš Mališ, Biljana Georgievski, Ivan Milić, Aleksandar Mijatović, Vladan Kovačević, Dijana Lazić, Slobodan Kapor, Slobodan Marinkovic
BACKGROUND: The aim was to examine the position of the brain stem and cervical cord following the neck flexion and extension. MATERIALS AND METHODS: The serial sagittal T2-weighted MRI sections of the cervical cord and brain stem were made in 6 volunteers. The images were mainly used to measure certain distances and angles of the brain stem and cervical cord in the neutral position, and then following the head and neck flexion and extension. RESULTS: The measurements showed that the pons is slightly closer to the clivus following the neck flexion, the medulla oblongata is somewhat distant to the basion but closer to the odontoid process...
November 10, 2016: Folia Morphologica (Warsz)
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
#10
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/27797859/snorting-the-clivus-away-an-extreme-case-of-cocaine-induced-midline-destructive-lesion
#11
Marco Molteni, Alberto Maria Saibene, Ketty Luciano, Alberto Maccari
Cocaine is a drug with relevant socioeconomic and clinical implications, which is usually recreationally used for its stimulant effects. It is widely known that the habit of snorting cocaine is associated with a peculiar type of drug-induced chronic rhinitis, which leads to inflammation of the sinonasal mucosa, slowly progressing to a destruction of nasal, palatal and pharyngeal tissues. These characteristic lesions due to cocaine abuse are commonly called cocaine-induced midline destructive lesions (CIMDL)...
October 20, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27767681/percutaneous-transoral-clivoplasty-and-upper-cervical-vertebroplasties-for-multifocal-skeletal-lymphangiomatosis-resulting-in-complete-resolution-of-pain-case-report
#12
Christina Huang Wright, Dorian Kusyk, William S Rosenberg, Jennifer A Sweet
Lymphangiomatosis is a rare congenital disorder that results in multiorgan system lymphatic invasion. Symptoms due to axial skeletal involvement can range from chronic bone pain to severe deformity resulting in radiculopathy, myelopathy, and even paralysis. The authors present a case of lymphangiomatosis of the clivus, C-1, and C-2, resulting in chronic pain. The patient was successfully treated with percutaneous transoral clivoplasty and vertebroplasty, without disease progression or return of symptoms at 2 years...
October 21, 2016: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/27751925/transvenous-embolization-of-the-basilar-plexus-before-endoscopic-transsphenoidal-transclival-surgery-a-case-report
#13
Katsuhiro Mizutani, Takenori Akiyama, Masahiro Toda, Tokunori Kanazawa, Dai Kamamoto, Kazunari Yoshida
BACKGROUND: The endoscopic transclival approach is a method for reaching the anterior side of the brainstem. In making this approach, bleeding from the basilar plexus is often observed when cutting the dura overlying the clivus; controlling such bleeding is essential. CASE DESCRIPTION: We performed a transvenous embolization of the basilar plexus before making the transclival approach. After embolization, bleeding from the basilar plexus during the operation decreased considerably...
October 14, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27663557/traumatic-basilar-artery-entrapment-with-patency-of-pontine-perforators-and-absence-of-significant-brainstem-infarction-report-of-an-unusual-case
#14
Stefan Kliesch, Christian Bauknecht, Georg Bohner, Thomas Liebig, Eberhard Siebert
We report a rare case of entrapment of the basilar artery into the sphenoid bone caused by a longitudinal fracture of the clivus. Using high resolution three-dimensional flat panel angiography, we show preservation of the basilar artery perforators in spite of severe stenosis of the entrapped segment of the basilar artery. There were no obvious signs and symptoms of posterior fossa stroke clinically or radiographically as far as could be assessed under given clinical circumstances.
September 23, 2016: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/27646318/traumatic-basilar-artery-entrapment-with-patency-of-pontine-perforators-and-absence-of-significant-brainstem-infarction-report-of-an-unusual-case
#15
Stefan Kliesch, Christian Bauknecht, Georg Bohner, Thomas Liebig, Eberhard Siebert
We report a rare case of entrapment of the basilar artery into the sphenoid bone caused by a longitudinal fracture of the clivus. Using high resolution three-dimensional flat panel angiography, we show preservation of the basilar artery perforators in spite of severe stenosis of the entrapped segment of the basilar artery. There were no obvious signs and symptoms of posterior fossa stroke clinically or radiographically as far as could be assessed under given clinical circumstances.
2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27630478/proposed-clinical-internal-carotid-artery-classification-system
#16
Saleem I Abdulrauf, Ahmed M Ashour, Eric Marvin, Jeroen Coppens, Brian Kang, Tze Yu Yeh Hsieh, Breno Nery, Juan R Penanes, Aysha K Alsahlawi, Shawn Moore, Hussam Abou Al-Shaar, Joanna Kemp, Kanika Chawla, Nanthiya Sujijantarat, Alaa Najeeb, Nadeem Parkar, Vilaas Shetty, Tina Vafaie, Jastin Antisdel, Tony A Mikulec, Randall Edgell, Jonathan Lebovitz, Matt Pierson, Paulo Henrique Pires de Aguiar, Paula Buchanan, Angela Di Cosola, George Stevens
INTRODUCTION: Numerical classification systems for the internal carotid artery (ICA) are available, but modifications have added confusion to the numerical systems. Furthermore, previous classifications may not be applicable uniformly to microsurgical and endoscopic procedures. The purpose of this study was to develop a clinically useful classification system. MATERIALS AND METHODS: We performed cadaver dissections of the ICA in 5 heads (10 sides) and evaluated 648 internal carotid arteries with computed tomography angiography...
July 2016: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/27609115/differences-in-sex-distribution-anatomic-location-and-mr-imaging-appearance-of-pediatric-compared-to-adult-chordomas
#17
Ronnie Sebro, Thomas DeLaney, Francis Hornicek, Joseph Schwab, Edwin Choy, G Petur Nielsen, Daniel I Rosenthal
BACKGROUND: Chordomas are rare malignancies that primarily affect adults, but also rarely affect pediatric patients. We compared the imaging appearance, demographic and anatomic distributions of adult and pediatric chordomas in a large cohort. METHODS: We performed a retrospective review of medical records of 220 subjects with histologically confirmed chordomas of the axial skeleton and pre-treatment magnetic resonance imaging studies. Age, sex, type of chordoma (conventional, chondroid or dedifferentiated), the anatomic location of the chordoma, as well as whether the lesion was primarily extra-osseous were recorded...
2016: BMC Medical Imaging
https://www.readbyqxmd.com/read/27593835/endoscopic-endonasal-transclival-resection-of-the-upper-clival-meningioma
#18
Omur Gunaldi, Hakan Kina, Osman Tanriverdi, Uzay Erdogan, Lütfi Şinasi Postalci
OBJECTIVE: In recent years, endoscope started to be used for the excision of the brainstem lesions or those localized in the anterior part of the brainstem. In this paper a case of clival meningioma resected through endoscopic endonasal transclival route has been presented with illustrations, live surgery videos demonstrating the surgery step by step. CASE REPORT: A 35-year-old male patient consulted to us with dysphagia,and impaired consciousness. MR imaging detected a mass lesion with a wide base localized clivus and anterior part of brainstem...
May 25, 2016: Turkish Neurosurgery
https://www.readbyqxmd.com/read/27586175/is-there-a-safe-and-effective-way-to-treat-trigeminal-neuralgia-associated-with-vertebrobasilar-dolichoectasia-presentation-of-eight-cases-and-literature-review
#19
Vicente Vanaclocha, Juan Manuel Herrera, Deborah Martínez-Gómez, Marlon Rivera-Paz, Cristina Calabuig-Bayo, Leyre Vanaclocha
BACKGROUND: surgical treatment of trigeminal neuralgia (TN) associated with vertebro-basilar dolichoectasia (VBD) is challenging. AIM: to analyze the treatments for this disease discussing its advantages and drawbacks, presenting our own technique and series. METHODS: retrospective study January 2006-January 2016. On pre and postop MRI images VBD deviation from midline, BA and VA diameter, and BA apex distance above posterior clinoid process were measured...
August 29, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27554305/expanded-endonasal-endoscopic-approach-for-resection-of-an-infrasellar-craniopharyngioma
#20
Hussam Abou-Al-Shaar, Ari M Blitz, Fausto J Rodriguez, Masaru Ishii, Gary L Gallia
BACKGROUND: Craniopharyngiomas are uncommon benign locally aggressive epithelial tumors mostly located in the sellar and suprasellar regions. An infrasellar origin of these tumors is rare. CASE DESCRIPTION: The authors report a 22-year-old male patient with a purely infrasellar adamantinomatous craniopharyngioma centered in the nasopharynx with extension into the posterior nasal septum, sphenoid sinus, and clivus. Gross total resection was achieved using an expanded endonasal endoscopic transethmoidal, transsphenoidal, transpterygoid, and transclival approach...
August 20, 2016: World Neurosurgery
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