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cranial base surgery

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https://www.readbyqxmd.com/read/29775030/-endoscopic-transnasal-approach-for-surgical-treatment-of-skull-base-clival-area-chordomas-report-of-2-cases
#1
J Ma, P Fang, D Wang, Y J Liu
The case 1 performanced submandibular trauma because of the faint Suddenly. There were no obvious abnormality in physical examination. CT result showed that the tumour located in the lower clivus, and the atlas was infringed. MRI imaging showed the tumour located in the both sides of the internal carotid artery, infringed clivus and atlas front, forwarded into the nasal cavity and oral cavity. The case 2 performanced the left nose stuffy and increased gradually, nasopharyngeal mirror showed the left nasal cavity filled with new life...
February 2018: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
https://www.readbyqxmd.com/read/29771833/proptosis-correction-in-pre-adolescent-patients-with-syndromic-craniosynostosis-by-le-fort-iii-distraction-osteogenesis
#2
Travis L Gibson, Barry H Grayson, Joseph G McCarthy, Pradip R Shetye
Le Fort III distraction osteogenesis may be indicated in the treatment of syndromic craniosynostosis with severe midface retrusion and proptosis. This study assesses the stability of proptosis correction over 10-years.A retrospective review identified 15 patients with syndromic craniosynostosis treated by Le Fort III distraction prior to age 10 (9 males, 6 females; age 4.9 ± 1.5 years). Untreated, non-craniosynostotic age- and gender-matched controls were obtained from historical growth records. Lateral cephalometric tracings at pre-surgery (T1), immediate (T2), 1 year (T3), 5 years (T4), and 10 years (T5) (n = 11) post-distraction were superimposed using the best-fit of cranial base...
May 15, 2018: Journal of Craniofacial Surgery
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
#3
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/29756178/hippocampal-deep-brain-stimulation-persistent-seizure-control-after-bilateral-extra-cranial-electrode-fracture
#4
Massimo Piacentino, Giacomo Beggio, Lara Zordan, Paolo Bonanni
Hippocampal deep brain stimulation (DBS) can provide an effective alternative for intractable temporal lobe epilepsy. In this case report, we describe a peculiar outcome after a post-traumatic wire-disconnection of a bilateral hippocampal DBS device. The patient presented a postoperative long-term significant reduction in seizure frequency even with an absent electric stimulation. This case gives the possibility to consider alternatives in epilepsy surgery, based on stimulation interference (lesional or electrical disturbing) in the epileptogenic zone...
May 13, 2018: Neurological Sciences
https://www.readbyqxmd.com/read/29741741/microsurgical-resection-of-glomus-jugulare-tumors-with-facial-nerve-reconstruction-3-dimensional-operative-video
#5
Duarte N C Cândido, Jean Gonçalves de Oliveira, Luis A B Borba
Paragangliomas are tumors originating from the paraganglionic system (autonomic nervous system), mostly found at the region around the jugular bulb, for which reason they are also termed glomus jugulare tumors (GJT). Although these lesions appear to be histologically benign, clinically they present with great morbidity, especially due to invasion of nearby structures such as the lower cranial nerves. These are challenging tumors, as they need complex approaches and great knowledge of the skull base. We present the case of a 31-year-old woman, operated by the senior author, with a 1-year history of tinnitus, vertigo, and progressive hearing loss, that evolved with facial nerve palsy (House-Brackmann IV) 2 months before surgery...
May 8, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29740678/-complications-of-anterior-skull-base-surgery
#6
REVIEW
M Wagenmann, K Scheckenbach, B Kraus, I Stenin
Anterior skull base operations are complex surgical procedures that are performed to treat serious and complicated diseases. Despite significant advances in surgical techniques, complications are relatively frequent and can be serious. Endoscopic skull base surgery seems to be associated with less complications than open techniques. Different classifications aimed at categorizing these complications have been suggested, the use of which can be recommended when reporting complication rates. The most relevant and frequent complications of anterior skull base surgery are hemorrhage, cerebrospinal fluid (CSF) leak, meningitis, and cranial nerve injury...
May 8, 2018: HNO
https://www.readbyqxmd.com/read/29733988/cardiac-related-spinal-cord-tissue-motion-at-the-foramen-magnum-is-elevated-in-type-i-chiari-malformation-patients-and-decreases-post-decompression-surgery
#7
Braden J Lawrence, Mark Luciano, John Tew, Richard G Ellenbogen, John N Oshinski, Francis Loth, Amanda P Culley, Bryn A Martin
OBJECTIVE: Type 1 Chiari malformation (CM-I) is a craniospinal disorder historically defined by cerebellar tonsillar position (TP) greater than 3-5mm below the foramen magnum (FM). This definition has come under question since quantitative measurements of cerebellar herniation do not always correspond with symptom severity. Researchers have proposed several additional radiographic diagnostic criteria based on dynamic motion of fluids and/or tissues. The present study objective was to determine if cardiac-related craniocaudal spinal cord tissue displacement is an accurate indicator of the presence of CM-I and if tissue displacement is altered with decompression...
May 4, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29732422/developments-in-the-treatment-of-chiari-type-1-malformations-over-the-past-decade
#8
Peter G Passias, Alexandra Pyne, Samantha R Horn, Gregory W Poorman, Muhammad B Janjua, Dennis Vasquez-Montes, Cole A Bortz, Frank A Segreto, Nicholas J Frangella, Matthew Y Siow, Akhila Sure, Peter L Zhou, John Y Moon, Bassel G Diebo, Shaleen N Vira
Background: Chiari malformations type 1 (CM-1), a developmental anomaly of the posterior fossa, usually presents in adolescence or early adulthood. There are few studies on the national incidence of CM-1, taking into account outcomes based on concurrent diagnoses. To quantify trends in treatment and associated diagnoses, as retrospective review of the Kid's Inpatient Database (KID) from 2003-2012 was conducted. Methods: Patients aged 0-20 with primary diagnosis of CM-1 in the KID database were identified...
March 2018: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/29730064/risk-of-radiation-vasculopathy-and-stroke-in-pediatric-patients-treated-with-proton-therapy-for-brain-and-skull-base-tumors
#9
Matthew D Hall, Julie A Bradley, Ronny L Rotondo, Ricardo Hanel, Chetan Shah, Christopher G Morris, Philipp R Aldana, Daniel J Indelicato
PURPOSE: To estimate the rate of and identify risk factors for vasculopathy after proton therapy in pediatric patients with central nervous system and skull base tumors. METHODS AND MATERIALS: Between 2006 and 2015, 644 pediatric patients with central nervous system and skull base tumors were treated with proton therapy at a single institution. The 3 most common histologies were craniopharyngioma (n = 135), ependymoma (n = 135), and low-grade glioma (n = 131)...
March 29, 2018: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29726802/efficacy-of-posterior-decompression-and-fixation-based-on-ossification-kyphosis-angle-criteria-for-multilevel-ossification-of-the-posterior-longitudinal-ligament-in-the-thoracic-spine
#10
Hiroshi Uei, Yasuaki Tokuhashi, Masashi Oshima, Masafumi Maseda, Masahiro Nakahashi, Enshi Nakayama
OBJECTIVE The range of decompression in posterior decompression and fixation for ossification of the posterior longitudinal ligament in the thoracic spine (T-OPLL) can be established using an index of spinal cord decompression based on the ossification-kyphosis angle (OKA) measured in the sagittal view on MRI. However, an appropriate OKA cannot be achieved in some cases, and posterior fixation is applied in cases with insufficient decompression. Moreover, it is unclear whether spinal cord decompression of the ventral side is essential for the treatment of OPLL...
May 4, 2018: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/29719850/delayed-progressive-intraparenchymal-tension-pneumocephalus-after-craniotomy-for-recurrent-pituitary-macroadenoma-a-case-report
#11
Samer S Hoz, Khatab Baban, Mohamad Sabah, Awfa Aktham, Alexis Rafael Narvaez-Rojas, Luis Rafael Moscote-Salazar
Pneumocephalus is defined as the presence of air in the intracranial cavity. In most cases, its evolution is asymptomatic and benign. Pneumocephalus post-surgery is a frequent complication of cranial surgery. We herein report delayed tension pneumocephalus after craniotomy for pituitary macroadenoma. A 73-year-old man with recurrent pituitary macroadenoma underwent subtotal resection via subfrontal approach. The postoperative course was uneventful and the patients regained his normal daily living activities...
April 2018: Bulletin of Emergency and Trauma
https://www.readbyqxmd.com/read/29716722/multi-view-stereo-in-the-operating-room-allows-prediction-of-healing-complications-in-a-patient-specific-model-of-reconstructive-surgery
#12
Taeksang Lee, Sergey Y Turin, Arun K Gosain, Adrian Buganza Tepole
Excessive mechanical stress leads to wound healing complications following reconstructive surgery. However, this knowledge is not easily applicable in clinical scenarios due to the difficulty in measuring stress contours during complex tissue rearrangement procedures. Computational tools have been proposed as an alternative to address this need, but obtaining patient specific geometries with an affordable and flexible setup has remained a challenge. Here we present a methodology to determine the stress contours from a reconstructive procedure on a patient-specific finite element model based on multi-view stereo (MVS)...
April 22, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29709301/primary-isolated-intracranial-rosai-dorfman-disease-report-of-a-rare-case-and-review-of-the-literature
#13
Shaolin Zhang, Jinsheng Huang, Yanling Chen
BACKGROUND: Intracranial involvement is an uncommon manifestation of Rosai-Dorfman disease (RDD) and had been rarely reported. In this study, we explore clinical characteristics, imageology manifestations and pathological features of primary intracranial RDD so as to improve the understanding for this disease. METHODS: One case (16-years-old boy) with primary intracranial RDD was analyzed and studied retrospectively by MRI features, histopathological observation and immunohistochemical staining, and the related literatures were reviewed...
December 27, 2017: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/29707613/an-overview-of-development-and-status-of-fiber-reinforced-composites-as-dental-and-medical-biomaterials
#14
REVIEW
Pekka K Vallittu
Fibr-reinforced composites (FRC) have been used successfully for decades in many fields of science and engineering applications. Benefits of FRCs relate to physical properties of FRCs and versatile production methods, which can be utilized. Conventional hand lamination of prefabricated FRC prepregs is utilized still most commonly in fabrication of dental FRC devices but CAD-CAM systems are to be come for use in certain production steps of dental constructions and medical FRC implants. Although metals, ceramics and particulate filler resin composites have successfully been used as dental and medical biomaterials for decades, devices made out of these materials do not meet all clinical requirements...
2018: Acta Biomaterialia Odontologica Scandinavica
https://www.readbyqxmd.com/read/29694661/morphological-characteristics-of-posterior-cerebral-circulation-an-analysis-based-on-non-invasive-imaging
#15
Filip Vitosevic, Lukas Rasulic, Svetlana Milosevic Medenica
AIM: Study was performed to provide measurements of the posterior cerebral circulation using non-invasive imaging modality. MATERIAL AND METHODS: 120 patients aged from 12 to 76 years were analyzed using CT angiography. Measurements of vertebral arteries (VA), basilar artery, posterior cerebral arteries (PCA) and posterior communicating arteries were obtained. Basilar artery appearance and curvature was also noted. Differences between sides, genders and age groups were evaluated...
April 6, 2018: Turkish Neurosurgery
https://www.readbyqxmd.com/read/29688214/-extracranial-aneurysms-of-carotid-arteries-in-the-practice-of-a-vascular-surgeon
#16
R N Lar'kov, S S Zagarov, M V Vishniakova, R V Shilov
The present study was aimed at retrospectively analysing the results of examination and open surgical treatment of patients diagnosed with extracranial aneurysms of carotid arteries. PATIENTS AND METHODS: We analysed the results of examination and outcomes of surgical treatment in a total of 11 patients (6 men and 5 women) presenting with an aneurysm of the extracranial portion of the carotid artery and undergoing treatment at the Department of Vascular and CAD Surgery of the Moscow Regional Research Clinical Institute from 2005 to 2016...
2018: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
https://www.readbyqxmd.com/read/29687593/incorporating-si-3-n-4-into-peek-to-produce-antibacterial-osteocondutive-and-radiolucent-spinal-implants
#17
Giuseppe Pezzotti, Elia Marin, Tetsuya Adachi, Federica Lerussi, Alfredo Rondinella, Francesco Boschetto, Wenliang Zhu, Takashi Kitajima, Kosuke Inada, Bryan J McEntire, Ryan M Bock, B Sonny Bal, Osam Mazda
Polyetheretherketone (PEEK) is a popular polymeric biomaterial which is primarily used as an intervertebral spacer in spinal fusion surgery; but it is developed for trauma, prosthodontics, maxillofacial, and cranial implants. It has the purported advantages of an elastic modulus which is similar to native bone and it can be easily formed into custom 3D shapes. Nevertheless, PEEK's disadvantages include its poor antibacterial resistance, lack of bioactivity, and radiographic transparency. This study presents a simple approach to correcting these three shortcomings while preserving the base polymer's biocompatibility, chemical stability, and elastic modulus...
April 24, 2018: Macromolecular Bioscience
https://www.readbyqxmd.com/read/29682061/transcranial-and-epidural-approach-for-spontaneous-cerebrospinal-fluid-leakage-due-to-meningoencephalocele-of-the-lateral-sphenoid-sinus
#18
Ryosuke Shintoku, Masahiko Tosaka, Tatsuya Shimizu, Yuhei Yoshimoto
We experienced a case of sphenoid sinus type meningoencephalocele manifesting as severe cerebrospinal fluid (CSF) rhinorrhea. A 35-year-old man became aware of serous nasal discharge 1 year previously, which had gradually worsened. The nasal discharge was diagnosed as CSF rhinorrhea. Head computed tomography (CT) showed several small depressions in the bone of the left middle cranial fossa, and the largest depression extended through the bone to the lateral sphenoid sinus. Head magnetic resonance imaging revealed that the meningoencephalocele projected to the lateral sphenoid sinus, through this small bone defect of the middle cranial fossa...
April 2018: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/29678697/intra-cranial-cryptococcoma-clinicopathological-correlation-and-surgical-outcome-a-single-institute-experience
#19
Alok Uppar, A R Prabhu Raj, Subhas Konar, Sandeep K, Dhaval Shukla, Sampath Somanna, B Indira Devi, Yasha C, Nagarathna Chandrashekar
OBJECTIVE: The present case series describes the clinical characteristics of patients diagnosed with intra cranialcryptococcoma(ICC), the clinic-pathological correlation and the outcomes following surgery. MATERIALS AND METHODS: The clinical data were collected from hospital case records and pathological confirmation was done by a neuropathologist. Clinical details, imaging features, and treatment modalities were studied and were correlated with outcomes based on regular follow up...
April 17, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29667467/mandibular-asymmetries-and-associated-factors-in-orthodontic-and-orthognathic-surgery-patients
#20
Guilherme Thiesen, Bruno F Gribel, Maria Perpétua M Freitas, Donald R Oliver, Ki Beom Kim
OBJECTIVES: To estimate the prevalence of mandibular asymmetries in orthodontic and orthognathic surgery patients and to investigate demographic and skeletal factors associated with this disharmony. MATERIALS AND METHODS: Cone-beam computed tomography images of 1178 individuals aged 19 through 60 years with complete dentitions were analyzed. Outcomes were classified as relative mandibular symmetry, moderate asymmetry, and severe asymmetry. Factors recorded included sex, age, side of mandibular deviation, sagittal jaw relationship, vertical skeletal pattern, angle of the cranial base, and maxillary asymmetry...
April 18, 2018: Angle Orthodontist
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