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https://www.readbyqxmd.com/read/28735380/the-midline-suboccipital-subtonsillar-approach-to-the-cerebellomedullary-cistern-how-i-do-it
#1
Stephan Herlan, Florian Roser, Florian H Ebner, Marcos Tatagiba
BACKGROUND: Lesions lateral to the lower brainstem in an area extending from the foraminae of Luschka to the foramen magnum are rare and include different pathologies. There is no consensus on an ideal surgical approach. METHOD: To gain access to this area, we use the midline suboccipital subtonsillar approach (STA). This midline approach with unilateral retraction of the cerebellar tonsil enables entry into the cerebellomedullary cistern. CONCLUSIONS: The STA offers excellent access with a panoramic view of the cerebellomedullary cistern and its structures and therefore can be useful for a number of different pathologies in the lower petroclival area...
July 22, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28735122/ventral-lumbar-synovial-cyst-causing-cauda-equina-compression-case-report-and-literature-review
#2
Anan Shtaya, Ahmed-Ramadan Sadek, Mark Walker, Ali Nader-Sepahi
BACKGROUND: Juxtafacet spinal cysts are cystic synovial lesions that are often indistinguishable clinically or radiologically and require histopathology analysis to confirm the diagnosis. Lumbar synovial cysts usually arising from the synovium of the facet joints. They have been described posterolateral or rarely in the posterior midline. However, we describe the first synovial cyst ventral to the dural sac. CASE DESCRIPTION: We report a lumbar 3-4 lesion causing cauda equina compression in a 57-year-old man who presented with 3 months history of low back pain and bilateral sciatica, intermittent urinary incontinence and erectile dysfunction...
July 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28734164/cognitive-strategies-in-the-mental-rotation-task-revealed-by-eeg-spectral-power
#3
Aaron L Gardony, Marianna D Eddy, Tad T Brunyé, Holly A Taylor
The classic mental rotation task (MRT; Shepard & Metzler, 1971) is commonly thought to measure mental rotation, a cognitive process involving covert simulation of motor rotation. Yet much research suggests that the MRT recruits both motor simulation and other analytic cognitive strategies that depend on visuospatial representation and visual working memory (WM). In the present study, we investigated cognitive strategies in the MRT using time-frequency analysis of EEG and independent component analysis. We scrutinized sensorimotor mu (µ) power reduction, associated with motor simulation, parietal alpha (pα) power reduction, associated with visuospatial representation, and frontal midline theta (fmθ) power enhancement, associated with WM maintenance and manipulation...
July 19, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28733729/laparoscopic-left-hepatectomy-for-mucinous-cystic-neoplasm-of-the-liver
#4
Nazareno Smerieri, Guido Fiorentini, Francesca Ratti, Federica Cipriani, Andrea Belli, Luca Aldrighetti
BACKGROUND: Among liver cystic lesions, mucinous cystic neoplasm of the liver (MCN-L) constitutes a challenging issue in terms of management: preoperative diagnosis is often unachievable and this may mislead to inappropriate treatment [1-3]. We present the case of an otherwise healthy 29-year-old female who underwent laparotomic cyst unroofing in segment 4 and cholecystectomy in another institution. Post-operative course was complicated by biliary leakage that was endoscopically treated...
July 21, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28733728/totally-extraperitoneal-approach-for-ventral-hernia
#5
Sante Capitano
BACKGROUND: In open surgery, extraperitoneal sublay mesh implantation is generally preferred to intraperitoneal placement, following the same principles as in "giant prosthetic reinforcement of the visceral sac" described for inguinal hernia repair [1, 2]. Miserez and Penninckx in 2002 described an endoscopic totally preperitoneal ventral hernia repair in a small cohort of 15 cases [3]. Unfortunately, this technique has not spread, probably because of the technical difficulties that require, but not for effectiveness...
July 21, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28733724/motion-monitoring-during-a%C3%A2-course-of-lung-radiotherapy-with-anchored-electromagnetic-transponders-quantification-of-inter-and-intrafraction-motion-and-variability-of-relative-transponder-positions
#6
Daniela Schmitt, Simeon Nill, Falk Roeder, Daniela Gompelmann, Felix Herth, Uwe Oelfke
PURPOSE: Anchored electromagnetic transponders for tumor motion monitoring during lung radiotherapy were clinically evaluated. First, intrafractional motion patterns were analyzed as well as their interfractional variations. Second, intra- and interfractional changes of the geometric transponder positions were investigated. MATERIALS AND METHODS: Intrafractional motion data from 7 patients with an upper or middle lobe tumor and three implanted transponders each was used to calculate breathing amplitudes, overall motion amount and motion midlines in three mutual perpendicular directions and three-dimensionally (3D) for 162 fractions...
July 21, 2017: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
https://www.readbyqxmd.com/read/28732300/complete-torsion-of-gallbladder-following-laparoscopic-cholecystectomy-a-case-study
#7
Tomoaki Bekki, Tomoyuki Abe, Hironobu Amano, Nobuaki Fujikuni, Hiroshi Okuda, Tatsunari Sasada, Minoru Yamaki, Tsuyoshi Kobayashi, Toshio Noriyuki, Masahiro Nakahara
INTRODUCTION: Gallbladder torsion is mainly associated with a floating gallbladder. From an anatomical perspective, laparoscopic cholecystectomy is a more optimal treatment than open cholecystectomy. PRESENTATION OF CASE: An 84-year-old woman visited the Onomichi General Hospital because of progressive pain in the right upper quadrant of her abdomen. Physical examination revealed a positive Murphy sign and peritoneal irritation. Laboratory data demonstrated that inflammatory marker levels were increased...
June 29, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28731572/endoscopic-surgical-technique-for-benign-fibrotic-strictures-of-the-upper-esophageal-sphincter
#8
Shun-Ichi Chitose, Kiminori Sato, Mioko Fukahori, Sachiyo Hamakawa, Akari Koga, Shintaro Sueyoshi, Hirohito Umeno
A 43-year-old man with complaints of increased difficulty of swallowing and weight loss underwent videofluorographic examination of swallowing, which revealed severely reduced cricopharyngeal opening. Endoscopic cricopharyngeal myotomy was performed using a modified technique (mECPM). A benign fibrotic stricture of the upper esophageal sphincter (UES) was identified under visualization of a distending operating laryngoscope. A vertical midline incision in the strictured mucosa and submucosal resection of the cricopharyngeal muscle were performed using a CO2 laser...
July 21, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/28731396/contralateral-posterior-interhemispheric-approach-to-deep-medial-parietooccipital-vascular-malformations-surgical-technique-and-results
#9
Jan-Karl Burkhardt, Ethan A Winkler, Michael T Lawton
OBJECTIVE Deep medial parietooccipital arteriovenous malformations (AVMs) and cerebral cavernous malformations (CCMs) are traditionally resected through an ipsilateral posterior interhemispheric approach (IPIA), which creates a deep, perpendicular perspective with limited access to the lateral margins of the lesion. The contralateral posterior interhemispheric approach (CPIA) flips the positioning, with the midline positioned horizontally for retraction due to gravity, but with the AVM on the upper side and the approach from the contralateral, lower side...
July 21, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28731381/reperfusion-after-ischemic-stroke-is-associated-with-reduced-brain-edema
#10
Hannah J Irvine, Ann-Christin Ostwaldt, Matthew B Bevers, Simone Dixon, Thomas Wk Battey, Bruce Cv Campbell, Stephen M Davis, Geoffrey A Donnan, Kevin N Sheth, Reza Jahan, Jeffrey L Saver, Chelsea S Kidwell, W Taylor Kimberly
Rapid revascularization is highly effective for acute stroke, but animal studies suggest that reperfusion edema may attenuate its beneficial effects. We investigated the relationship between reperfusion and edema in patients from the Echoplanar Imaging Thrombolysis Evaluation Trial (EPITHET) and Mechanical Retrieval and Recanalization of Stroke Clots Using Embolectomy (MR RESCUE) cohorts. Reperfusion percentage was measured as the difference in perfusion-weighted imaging lesion volume between baseline and follow-up (day 3-5 for EPITHET; day 6-8 for MR RESCUE)...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28730275/comparative-analysis-of-open-and-robotic-transversus-abdominis-release-for-ventral-hernia-repair
#11
James G Bittner, Sameer Alrefai, Michelle Vy, Micah Mabe, Paul A R Del Prado, Natasha L Clingempeel
BACKGROUND: Transversus abdominis release (TAR) is a safe, effective strategy to repair complex ventral incisional hernia (VIH); however, open TAR (o-TAR) often necessitates prolonged hospitalization. Robot-assisted TAR (r-TAR) may benefit short-term outcomes and shorten convalescence. This study compares 90-day outcomes of o-TAR and r-TAR for VIH repair. METHODS: A single-center, retrospective review of patients who underwent o-TAR or r-TAR for VIH from 2015 to 2016 was conducted...
July 20, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28729820/auditory-mismatch-negativity-in-response-to-changes-of-counter-balanced-interaural-time-and-level-differences
#12
Christian F Altmann, Ryuhei Ueda, Shigeto Furukawa, Makio Kashino, Tatsuya Mima, Hidenao Fukuyama
Interaural time differences (ITD) and interaural level differences (ILD) both signal horizontal sound source location. To achieve a unified percept of our acoustic environment, these two cues require integration. In the present study, we tested this integration of ITD and ILD with electroencephalography (EEG) by measuring the mismatch negativity (MMN). The MMN can arise in response to spatial changes and is at least partly generated in auditory cortex. In our study, we aimed at testing for an MMN in response to stimuli with counter-balanced ITD/ILD cues...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28729764/deciphering-the-role-of-micrornas-in-brd4-nut-fusion-gene-induced-nut-midline-carcinoma
#13
Ekta Pathak, Bhavya, Divya Mishra, Neelam Atri, Rajeev Mishra
NUT midline carcinoma (NMC) is a very aggressive and lethal type of squamous epithelial cell cancer caused due to fusion of BRD4 and NUT genes. The gene fusion results into a new fusion protein that promotes oncogenesis. The detailed molecular mechanisms underlying the NMC are still not clear and new findings are urgently required to complement the current efforts. Abnormal microRNAs (miRNA) expression promotes tumour formation by modulating the functional expression of critical genes other than the parent genes involved in tumour cell proliferation or survival...
2017: Bioinformation
https://www.readbyqxmd.com/read/28728426/osteochondroma-of-the-hyoid-first-pediatric-case-and-literature-review
#14
Blake S Raggio, Samuel Ficenec, Thomas C Flowers, Claire Lawlor, Kimsey Rodriguez
Osteochondromas, the most common benign bone tumors, are cartilaginous neoplasms of unknown origin with rare malignant potential. Osteochondromas rarely occur in the head and neck, and diagnosis relies on a combination of clinical, radiological, and histological criteria. Excision is often curative. We describe the first reported case of hyoid osteochondroma in an adolescent male with multiple osteochondroma, discuss its surgical management, and perform a review of the salient literature. Osteochondroma represents a rare diagnosis to include in the differential of any midline neck mass...
July 1, 2017: Clinical Pediatrics
https://www.readbyqxmd.com/read/28727900/head-midline-position-for-preventing-the-occurrence-or-extension-of-germinal-matrix-intraventricular-hemorrhage-in-preterm-infants
#15
REVIEW
Olga Romantsik, Maria Grazia Calevo, Matteo Bruschettini
BACKGROUND: Preterm birth is known to constitute the major risk factor for development of germinal matrix-intraventricular hemorrhage (GM-IVH). Head position may affect cerebral hemodynamics and thus may be involved indirectly in development of GM-IVH. Turning the head toward one side may functionally occlude jugular venous drainage on the ipsilateral side while increasing intracranial pressure and cerebral blood volume. Thus, it has been suggested that cerebral venous pressure is reduced and hydrostatic brain drainage improved if the patient is in supine midline position with the bed tilted 30°...
July 20, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28727518/therapeutic-and-prognostic-implications-of-braf-v600e-in-pediatric-low-grade-gliomas
#16
Alvaro Lassaletta, Michal Zapotocky, Matthew Mistry, Vijay Ramaswamy, Marion Honnorat, Rahul Krishnatry, Ana Guerreiro Stucklin, Nataliya Zhukova, Anthony Arnoldo, Scott Ryall, Catriona Ling, Tara McKeown, Jim Loukides, Ofelia Cruz, Carmen de Torres, Cheng-Ying Ho, Roger J Packer, Ruth Tatevossian, Ibrahim Qaddoumi, Julie H Harreld, James D Dalton, Jean Mulcahy-Levy, Nicholas Foreman, Matthias A Karajannis, Shiyang Wang, Matija Snuderl, Amulya Nageswara Rao, Caterina Giannini, Mark Kieran, Keith L Ligon, Maria Luisa Garre, Paolo Nozza, Samantha Mascelli, Alessandro Raso, Sabine Mueller, Theodore Nicolaides, Karen Silva, Romain Perbet, Alexandre Vasiljevic, Cécile Faure Conter, Didier Frappaz, Sarah Leary, Courtney Crane, Aden Chan, Ho-Keung Ng, Zhi-Feng Shi, Ying Mao, Elizabeth Finch, David Eisenstat, Bev Wilson, Anne Sophie Carret, Peter Hauser, David Sumerauer, Lenka Krskova, Valerie Larouche, Adam Fleming, Shayna Zelcer, Nada Jabado, James T Rutka, Peter Dirks, Michael D Taylor, Shiyi Chen, Ute Bartels, Annie Huang, David W Ellison, Eric Bouffet, Cynthia Hawkins, Uri Tabori
Purpose BRAF V600E is a potentially highly targetable mutation detected in a subset of pediatric low-grade gliomas (PLGGs). Its biologic and clinical effect within this diverse group of tumors remains unknown. Patients and Methods A combined clinical and genetic institutional study of patients with PLGGs with long-term follow-up was performed (N = 510). Clinical and treatment data of patients with BRAF V600E mutated PLGG (n = 99) were compared with a large international independent cohort of patients with BRAF V600E mutated-PLGG (n = 180)...
July 20, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28727317/laparoscopic-transabdominal-preperitoneal-approach-for-umbilical-hernia-with-rectus-diastasis
#17
Sante Capitano
INTRODUCTION: Rectus diastasis, when coexistent with umbilical hernia, can benefit from mesh-based repair of the midline. Laparoscopic correction of an umbilical hernia involves the placement of a mesh in the peritoneal cavity, but this comes with the risk of bowel complications. However, newly developed dual-sided composite meshes have helped to reduce this risk. MATERIALS AND SURGICAL TECHNIQUE: Four men and three women with umbilical hernia and rectus diastasis were treated with laparoscopic transabdominal preperitoneal repair...
August 2017: Asian Journal of Endoscopic Surgery
https://www.readbyqxmd.com/read/28726148/first-human-use-of-hybrid-synthetic-biologic-mesh-in-ventral-hernia-repair-a-multicenter-trial
#18
James G Bittner, Kevin El-Hayek, Andrew T Strong, Melissa Phillips LaPinska, Jin S Yoo, Eric M Pauli, Matthew Kroh
BACKGROUND: Mesh options for reinforcement of ventral/incisional hernia (VIH) repair include synthetic or biologic materials. While each material has known advantages and disadvantages, little is understood about outcomes when these materials are used in combination. This multicenter study reports on the first human use of a novel synthetic/biologic hybrid mesh (Zenapro(®) Hybrid Hernia Repair Device) for VIH repair. METHODS: This prospective, multicenter post-market clinical trial enrolled consecutive adults who underwent elective VIH repair with hybrid mesh placed in the intraperitoneal or retromuscular/preperitoneal position...
July 19, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28720349/rejection-of-the-synonymization-of-pegosomum-saginatum-ratz-1898-ratz-1903-with-pegosomum-asperum-wright-1879-ratz-1903
#19
Petr Heneberg, Jiljí Sitko
The Pegosomum Ratz, 1903 are digenean parasites of piscivorous birds. They exhibit few morphological autapomorphies and some of their identification features (number of collar spines) can be altered before or during fixation. Several re-classifications within the genus were suggested, but they have never been supported by molecular analyses. We addressed the synonymization of species within Pegosomum asperum/saginatum complex suggested by Dubinin, Dubinina and Saidov. We analyzed one nuclear (ITS2) and two mitochondrial (CO1, ND1) loci of two central European species of Pegosomum, namely Pegosomum asperum (Wright, 1879) Ratz, 1903 and Pegosomum saginatum (Ratz, 1898) Ratz, 1903...
July 15, 2017: Parasitology International
https://www.readbyqxmd.com/read/28718787/a-note-on-suckling-behavior-and-laterality-in-nursing-humpback-whale-calves-from-underwater-observations
#20
Ann M Zoidis, Kate S Lomac-MacNair
We investigated nursing behavior on the Hawaiian breeding grounds for first year humpback whale (Megaptera novaeangliae) calves. We observed and video-documented underwater events with nursing behavior from five different whale groups. The observed nursing events include behaviors where a calf positions itself at a 30-45° angle to the midline of the mother's body, with its mouth touching her mammary slit (i.e., suckling position). On two occasions, milk in the water column was recorded in close proximity to a mother/calf pair, and on one occasion, milk was recorded 2...
July 18, 2017: Animals: An Open Access Journal From MDPI
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