Transcallosal Interforniceal Approach for a Large Choroid Plexus Tumor in a 4-Month-Old Boy: 2-Dimensional Operative Video

2020 ◽  
Vol 19 (3) ◽  
pp. E295-E295
Author(s):  
Vijay M Ravindra ◽  
Guillermo Aldave
Keyword(s):  
Surgical Technique ◽  
Choroid Plexus ◽  
Pediatric Population ◽  
Third Ventricle ◽  
Careful Selection ◽  
Additional Risk ◽  
Choroid Plexus Tumor ◽  
Significant Challenge ◽  
Ventricular Tumors ◽  
Selection Of

Abstract Tumors in the third ventricle constitute a challenge for the neurosurgeon, regardless of the chosen approach. The additional risk of severe blood loss in the pediatric population, specially for choroid plexus tumors, which are the most common ventricular tumors in children, adds a significant challenge in these cases. Therefore, a careful selection of the approach in addition to surgical technique is crucial for a favorable outcome. In this video, we discuss the approach selected for the treatment of a large choroid plexus tumor in a 4-mo-old male and highlight the surgical technique chosen for this case, a transcallosal interforniceal approach.1 Appropriate consent for the video authorization and the procedure was obtained from the parent of the patient. Images in video from Rhoton AL Jr, The Cerebrum, Neurosurgery, 2007, 61, suppl_1, SHC-37-SHC-119, by permission of the Congress of Neurological Surgeons.

scholarly journals Persistence of communicating hydrocephalus post choroid plexus tumor resection: Case reports and review of literature

2021 ◽  
Vol 12 ◽  
pp. 483
Author(s):  
Sarah A. Basindwah ◽  
Basmah S. Alzahrani ◽  
Abdulrazag M. Ajlan ◽  
Hiasham Alkhalidi
Keyword(s):  
Cerebrospinal Fluid ◽  
Choroid Plexus ◽  
Case Reports ◽  
Third Ventricle ◽  
Tumor Resection ◽  
Communicating Hydrocephalus ◽  
Complete Excision ◽  
Choroid Plexus Tumors ◽  
Vp Shunt ◽  
Choroid Plexus Tumor

Background: Hydrocephalus is the most common presentation of choroid plexus tumors; it is thought to be caused either by mass effect obstructing the cerebrospinal fluid pathways or secretory properties of the tumor. In these case reports, we present two cases of choroid plexus tumors with persistence of communicating hydrocephalus postoperatively and review similar reports in the literature. Case Description: Case 1: a 2-month-old baby girl presented with bulging fontanelle, sunsetting eyes. Magnetic resonance imaging (MRI) showed large third ventricle mass with communicating hydrocephalus. She underwent complete excision of tumor through transcortical approach with perioperative intraventricular hemorrhage. Hydrocephalus persisted postoperatively and the patient required permanent ventriculoperitoneal (VP) shunt. Case 2: a 16-year-old boy presented decreased visual acuity, papilledema, and morning headaches. MRI showed a tumor in the right ventricle and communicating hydrocephalus. He underwent transparietal resection of the tumor. In both cases, hydrocephalus persisted postoperatively and patients required permanent VP shunt. Review of similar cases showed the majority of cases required permanent shunting. Conclusion: Choroid plexus tumor patients can present with communicating hydrocephalus that may persist post tumor resection for different etiologies. Careful follow-up to determine the need for cerebrospinal fluid diversion through a permanent VP shunt is important.

Development and evaluation of a patient-specific surgical simulator for endoscopic colloid cyst resection

2020 ◽  
Vol 133 (2) ◽  
pp. 521-529 ◽  
Author(s):  
Vivek P. Bodani ◽  
Gerben E. Breimer ◽  
Faizal A. Haji ◽  
Thomas Looi ◽  
James M. Drake
Keyword(s):  
Choroid Plexus ◽  
Computer Aided Design ◽  
Third Ventricle ◽  
Colloid Cyst ◽  
Comfort Level ◽  
Complex Case ◽  
Patient Specific ◽  
Surgical Simulator ◽  
Perceived Realism ◽  
Noncontrast Ct

OBJECTIVEEndoscopic resection of third-ventricle colloid cysts is technically challenging due to the limited dexterity and visualization provided by neuroendoscopic instruments. Extensive training and experience are required to master the learning curve. To improve the education of neurosurgical trainees in this procedure, a synthetic surgical simulator was developed and its realism, procedural content, and utility as a training instrument were evaluated.METHODSThe simulator was developed based on the neuroimaging (axial noncontrast CT and T1-weighted gadolinium-enhanced MRI) of an 8-year-old patient with a colloid cyst and hydrocephalus. Image segmentation, computer-aided design, rapid prototyping (3D printing), and silicone molding techniques were used to produce models of the skull, brain, ventricles, and colloid cyst. The cyst was filled with a viscous fluid and secured to the roof of the third ventricle. The choroid plexus and intraventricular veins were also included. Twenty-four neurosurgical trainees performed a simulated colloid cyst resection using a 30° angled endoscope, neuroendoscopic instruments, and image guidance. Using a 19-item feedback survey (5-point Likert scales), participants evaluated the simulator across 5 domains: anatomy, instrument handling, procedural content, perceived realism, and confidence and comfort level.RESULTSParticipants found the simulator’s anatomy to be highly realistic (mean 4.34 ± 0.63 [SD]) and appreciated the use of actual instruments (mean 4.38 ± 0.58). The procedural content was also rated highly (mean 4.28 ± 0.77); however, the perceived realism was rated slightly lower (mean 4.08 ± 0.63). Participants reported greater confidence in their ability to perform an endoscopic colloid cyst resection after using the simulator (mean 4.45 ± 0.68). Twenty-three participants (95.8%) indicated that they would use the simulator for additional training. Recommendations were made to develop complex case scenarios for experienced trainees (normal-sized ventricles, choroid plexus adherent to cyst wall, bleeding scenarios) and incorporate advanced instrumentation such as side-cutting aspiration devices.CONCLUSIONSA patient-specific synthetic surgical simulator for training residents and fellows in endoscopic colloid cyst resection was successfully developed. The simulator’s anatomy, instrument handling, and procedural content were found to be realistic. The simulator may serve as a valuable educational tool to learn the critical steps of endoscopic colloid cyst resection, develop a detailed understanding of intraventricular anatomy, and gain proficiency with bimanual neuroendoscopic techniques.

Afterword

2020 ◽  
pp. 680-683
Author(s):  
Janice L. Waldron ◽  
Stephanie Horsley ◽  
Kari K. Veblen
Keyword(s):  
Social Media ◽  
Media Use ◽  
Careful Selection ◽  
Social Media Use ◽  
Pedagogical Tools ◽  
The Future ◽  
User Data ◽  
Selection Of ◽  
Data Surface

We all feel the implications of the force of social media—for good and for ill—in our lives and in our professional world. At the time of this writing, Facebook continues with its struggle to “clean up its act” as more revelations surrounding breaches of trust and hacked user data surface in the news and various countries attempt to hold Facebook to account. Despite this, social media use continues to grow exponentially, and the potential for responsible, ethical, and transparent social media to transform the ways in which we interact with and learn from each other increase with it. As we wait to see what the future holds for social media in society, we are reminded once again that it is the careful selection of pedagogical tools such as social media, as well the guided awareness of the challenges and benefits of those tools, that remains constant, even as tools may change, disappear, or fall out of fashion.

scholarly journals Canine Choroid Plexus Tumor with Intracranial Dissemination Presenting as Multiple Cystic Lesions

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Trisha J. Oura ◽  
Peter J. Early ◽  
Samuel H. Jennings ◽  
Melissa J. Lewis ◽  
Jeremy R. Tobias ◽  
...  
Keyword(s):  
Choroid Plexus ◽  
Brain Lesions ◽  
Behavioral Changes ◽  
Cystic Lesions ◽  
Resonance Imaging ◽  
Mri Findings ◽  
Choroid Plexus Tumor ◽  
Magnetic Resonance Imaging Mri ◽  
Mri Characteristics ◽  
Possible Cause

A Miniature Pinscher developed acute blindness and behavioral changes. On magnetic resonance imaging (MRI), there were multiple small intra-axial cystic lesions, and primary differential diagnoses included primary or metastatic neoplasia and neurocysticercosis. These cystic lesions were subsequently diagnosed histopathologically as disseminated choroid plexus carcinoma. This is only the second documented description of this diagnosis in a dog, but both patients had very similar MRI findings. This patient adds to the literature about the MRI characteristics of choroid plexus tumors and indicates that choroid plexus tumor should be considered as a possible cause of small multifocal intra-axial cystic brain lesions in dogs, regardless of whether a primary intraventricular lesion is visible.

Catacomb culture wagons of the Eurasian steppes

Antiquity ◽  
2014 ◽  
Vol 88 (340) ◽  
pp. 378-394 ◽  
Author(s):  
N.I. Shishlina ◽  
D.S. Kovalev ◽  
E.R. Ibragimova
Keyword(s):  
Stable Isotope ◽  
Isotope Analysis ◽  
Burial Mound ◽  
Careful Selection ◽  
Southern Russia ◽  
The Subject ◽  
The Individual ◽  
Wheeled Vehicles ◽  
Selection Of ◽  
Catacomb Culture

The origin and development of wheeled vehicles continues to fascinate today no less than when Stuart Piggott (1974) first wrote about the subject inAntiquity40 years ago. A growing number of examples from the steppes of southern Russia and Ukraine are providing new insights into the design and construction of these complex artefacts. A recent example from the Ulan IV burial mound illustrates the techniques employed and the mastery of materials, with careful selection of the kinds of wood used for the wheels, axles and other elements. Stable isotope analysis of the individual interred in this grave showed that he had travelled widely, emphasising the mobility of steppe populations.

Choroid plexus papilloma of the third ventricle

Neurosurgery ◽  
1983 ◽  
Vol 12 (2) ◽  
pp. 217???20 ◽  
Author(s):  
W C Gradin ◽  
C Taylon ◽  
A H Fruin
Keyword(s):  
Choroid Plexus ◽  
Third Ventricle ◽  
Choroid Plexus Papilloma ◽  
The Third ◽  
Plexus Papilloma

scholarly journals The Effects of Landscape Elements on the Breeding Sites of Bloodsucking Midge

2021 ◽  
Vol 13 (5) ◽  
pp. 2863
Author(s):  
Kaowen Grace Chang ◽  
Hungju Chien
Keyword(s):  
Ground Surface ◽  
Preventive Strategies ◽  
Careful Selection ◽  
Public Concern ◽  
Breeding Sites ◽  
Algae Growth ◽  
Potential Habitats ◽  
Landscape Factors ◽  
The Relationship ◽  
Selection Of

Forcipomyia taiwana, a bloodsucking midge that is one of the most irritating biting pests in Taiwan, has raised widespread public concern. However, we have little information about the extent to which landscape factors affect their potential habitats. As a result, landscape professionals do not have enough information to implement preventive strategies to control midges. The purpose of this study is to investigate the relationship between landscaping and algae growth for larval breeding sites of Forcipomyia taiwana. The intent is to determine the environmental strategies that make the planned landscape unsuitable for midges to breed. GIS based on data collected from 16 constructed landscape sites (317,187 m2 in total) was utilized to spatially examine the relationship between the occurrence of the algae for midge breeding sites and the ground surface types and planting characteristics in each landscape. The results revealed that the potential midge habitats can be controlled through careful selection of the ground surface, the improvement of the site drainage, and choosing plants with the appropriate characteristics. Apart from choosing the appropriate type of paving surface, the integrity of the paving installation and the coverage of the ecological surface also influence prevention efficacy.

WEIGHT GAINS IN THE FIRST FOUR WEEKS OF INFANCY: A COMPARISON OF THREE DIETS

PEDIATRICS ◽  
1956 ◽  
Vol 18 (3) ◽  
pp. 362-368
Author(s):  
Ruth T. Gross ◽  
Lincoln E. Moses
Keyword(s):  
Human Milk ◽  
Statistical Methods ◽  
Full Term ◽  
Clinical Judgement ◽  
Careful Selection ◽  
Term Infants ◽  
Weight Gains ◽  
The Many ◽  
Selection Of

Four hundred seven healthy, full-term infants were divided into three groups and fed, respectively, a formula of evaporated milk and water with 5% carbohydrate; human milk; and a special modified evaporated milk designed to simulate human milk. No other foods were added to the diet. A comparison of the three groups was made, based on weight gains from birth to the end of the first 4 weeks. The conclusions refer only to weight gains; no attempt was made to determine the superiority of any particular diet. The data show no significant differences in the 4-week weight gains among the three groups of infants, although sensitive statistical methods could be validly applied to the problem. These methods are explained. The authors wish to emphasize the many variables which must be taken into account in a study of this sort; the necessity for careful selection of valid statistical methods; the importance of critical clinical judgement in the evaluation of the results.

The Design for Assembly Guidelines Transform a Product Innovation From a Loser to a Winner

1998 ◽  
Author(s):  
David H. Myszka
Keyword(s):  
Product Innovation ◽  
Computer Models ◽  
Design For Assembly ◽  
Careful Selection ◽  
Significant Cost ◽  
Success Stories ◽  
Modeling Process ◽  
Design Activities ◽  
Manual Review ◽  
Selection Of

Abstract Several manufacturer’s are witnessing soaring profits as a result of cost reductions derived from Design for Manufacturing and Assembly (DFMA) analyses. These successes are prompting others to turn to more refined computer models of product assemblies. However, much can be gained from a very routine analysis, using nothing more than the basic Design for Assembly (DFA) guidelines. These gains can be realized at a mere fraction of the resources needed for the computer models. This method of analysis is especially appealing to engineers whose time constraints require careful selection of design activities. This paper argues that DFMA analysis does not need to be an elaborate modeling process to produce significant cost improvements. This point is illustrated with an example of a redesign of a cooking range door. A manual review of the DFA guidelines turned a design innovation from a loser into a winner. Success stories from such informal analyses should promote greater implementation across industries that are hesitant in adopting DFMA practices.

scholarly journals Population pharmacokinetic modeling to facilitate dose selection of tapentadol in the pediatric population

2019 ◽  
Vol Volume 12 ◽  
pp. 2835-2850 ◽  
Author(s):  
Estelle Watson ◽  
Akash Khandelwal ◽  
Jan Freijer ◽  
John van den Anker ◽  
Claudia Lefeber ◽  
...  
Keyword(s):  
Pediatric Population ◽  
Pharmacokinetic Modeling ◽  
Population Pharmacokinetic ◽  
Dose Selection ◽  
Population Pharmacokinetic Modeling ◽  
Selection Of
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