CLASSIC FINDING OF DANDY-WALKER MALFORMATION- CASE REPORT

2021 ◽  
pp. 18-20
Author(s):  
Susana del Rocío Latorre Segovia ◽  
Wellington Patricio Arce Chariguaman ◽  
Mayra Verónica Barragán Mejía ◽  
Dayana Estefanía López Orozco
Keyword(s):  
Posterior Fossa ◽  
Congenital Anomalies ◽  
Wide Spectrum ◽  
Genetic Defect ◽  
Medical Personnel ◽  
Anatomical Structures ◽  
Precise Diagnosis ◽  
Detailed Assessment ◽  
Walker Malformation ◽  
Neuroimaging Techniques

Summary: The frequency and importance of posterior fossa evaluation has increased signicantly in the last 20 years due to advances in neuroimaging. Today, conventional and advanced neuroimaging techniques allow a detailed assessment of the complex anatomical structures within the posterior fossa. A wide spectrum of congenital anomalies (anomalies due to an alteration of the primary developmental program caused by a genetic defect) and due to the breakdown of a structure that had a potential for normal development has been demonstrated. Knowledge of the spectrum of congenital anomalies of the posterior fossa and its well-dened diagnostic criteria is essential for optimal therapy, an accurate prognosis, and correct genetic counseling. Objective: Analyze the importance of the precise diagnosis of congenital anomalies of the posterior fossa, emphasizing Dandy Walker syndrome, through a clinical case. Design: Prospective, observational in a single center. Methodology: This is a systematic review, Dandy Walker syndrome, detailing its clinical characteristics and short-term complications. The information and images obtained belong to the medical personnel in charge of the case, whose reinforcements are provided by the Excel, Word and JPG statistical package.

Cerebellar Agenesis: A Case to Remember

2019 ◽  
Vol 18 (01) ◽  
pp. 045-048
Author(s):  
John V. Dennison ◽  
Dharmesh R. Tailor
Keyword(s):  
Posterior Fossa ◽  
Congenital Anomalies ◽  
Rare Case ◽  
Genetic Causes ◽  
Cerebellar Function ◽  
Dandy Walker Malformation ◽  
Wide Range ◽  
Walker Malformation

AbstractThere is a wide range of congenital anomalies of the posterior fossa. Of these, absence of cerebellar components seems to exist on a spectrum, much like anomalies seen with the more frequently encountered Dandy–Walker malformation. Here, we present a rare case of cerebellar agenesis, as seen at our institution, which falls on the extreme side of the spectrum. We also discuss normal and aberrant posterior fossa development, established or hypothesized genetic causes of such development, and implications on cerebellar function.

The Fetal Posterior Fossa on Prenatal Ultrasound Imaging: Normal Longitudinal Development and Posterior Fossa Anomalies

2019 ◽  
Vol 40 (06) ◽  
pp. 692-721 ◽  
Author(s):  
Barbara Pertl ◽  
Sophie Eder ◽  
Christina Stern ◽  
Sarah Verheyen
Keyword(s):  
Posterior Fossa ◽  
First Trimester ◽  
Joubert Syndrome ◽  
Anatomical Structures ◽  
Longitudinal Development ◽  
Arnold Chiari Malformation ◽  
Trimester Screening ◽  
Cerebellar Anatomy ◽  
Walker Malformation ◽  
Vermian Hypoplasia

AbstractFetal neurosonography and the assessment of the posterior fossa have gained in importance during the last 2 decades primarily due to the development of high-resolution ultrasound probes and the introduction of 3 D sonography. The anatomical development of the posterior fossa can be visualized well with the newest ultrasound technologies. This allows better knowledge of the anatomical structures and helps with understanding of the development of malformations of the posterior fossa. In this article the longitudinal development of the posterior fossa structures will be reviewed. The embryologic description will be compared with ultrasound descriptions. These embryologic and anatomic illustrations form the basis for the screening and diagnosis of malformations of the posterior fossa. During the first trimester, screening for open spina bifida as well as cystic malformations of the posterior fossa is possible. In the second and third trimester, malformations of the posterior fossa can be subdivided into 3 groups: fluid accumulation in the posterior fossa (Dandy-Walker malformation, Blake’s pouch cyst, mega cisterna magna, arachnoid cyst, vermian hypoplasia), decreased cerebellar biometrics (volume) (cerebellar hypoplasia, pontocerebellar hypoplasia) and suspicious cerebellar anatomy (Arnold-Chiari malformation, rhombencephalosynapsis, Joubert syndrome). This algorithm, in combination with knowledge of normal development, facilitates the diagnostic workup of malformations of the posterior fossa.

scholarly journals Hydrocephalus and Dandy- Walker Malformation: a review

2020 ◽  
Vol 2 (3(September-December)) ◽  
pp. e442020
Author(s):  
Patricia Alessandra Dastoli Dastoli ◽  
Jardel Mendonça Nicácio ◽  
Marcos Devanir Silva Da Costa ◽  
Italo Capraro Suriano ◽  
Marcia Cristina Da Silva ◽  
...  
Keyword(s):  
Posterior Fossa ◽  
Correct Diagnosis ◽  
Lateral Sinus ◽  
Dandy Walker Malformation ◽  
Superior Dislocation ◽  
Posterior Fossa Malformations ◽  
Magnetic Resonance Imaging Mri ◽  
Hydrocephalus Treatment ◽  
Walker Malformation ◽  
Posterior Fossa Malformation

Introduction: Dandy Walker malformation (DWM) is characterized by agenesis or hypoplasia of the cerebellar vermis, cystic dilatation of the fourth ventricle leading to an increase of the posterior fossa and superior dislocation of the lateral sinus, tentorium and torcula. Although it is the commonest posterior fossa malformation, its pathogenesis is still not fully understood, making the differential diagnosis with other posterior fossa malformations difficult and as a result the choice of therapeutic strategy. Material and methods: An extensive review of the literature relating to Dandy Walker malformation was performed. Historical, genetic, embryologic, epidemiologic, clinical and radiological presentation, treatment and prognosis were revised. Conclusion: The correct diagnosis of Dandy Walker malformation can be made through careful interpretation of magnetic resonance imaging (MRI) and cerebrospinal fluid (CSF) flow studies.  The choice of hydrocephalus treatment depends on whether there is aqueduct stenosis.  And, although ventriculoperitoneal (VP) shunts have been the treatment of choice for many years, neuroendoscopic techniques such as endoscopic thirdventriculostomy and stent placement are being frequently performed lately.

Posterior Fossa Cyst and Hydrocephalus

2019 ◽  
pp. 239-245
Author(s):  
Peter J. Morone ◽  
John C. Wellons
Keyword(s):  
Posterior Fossa ◽  
Imaging Modality ◽  
Brain Mri ◽  
Mass Effect ◽  
Dandy Walker Malformation ◽  
Treatment Indications ◽  
Posterior Fossa Cyst ◽  
Walker Malformation ◽  
4Th Ventricle ◽  
Foramen Of Luschka

A Dandy-Walker malformation is an anatomical triad characterized by a large posterior fossa, agenesis of the cerebellar vermis, and dilation of the 4th ventricle. Up to 90% of patients will have hydrocephalus secondary to obstruction of fourth ventricular outflow through the foramen of Luschka and Magendie. The differential diagnosis of Dandy-Walker malformation includes Blake’s pouch cyst, a cystic structure originating within the roof of the 4th ventricle that herniates into the cisterna magna, and posterior fossa arachnoid cysts, which typically displace both the cerebellum and 4th ventricle anteriorly and demonstrate a propensity to enlarge. Brain MRI is the best diagnostic imaging modality to evaluate posterior fossa anatomy and cystic structures. Not all posterior fossa cysts require treatment. Indications for surgical intervention include enlargement, symptomatic mass effect and/or hydrocephalus.

Posterior fossa arachnoid cyst: an in utero mimicker of Dandy-Walker malformation.

1995 ◽  
Vol 14 (10) ◽  
pp. 787-790 ◽  
Author(s):  
J A Estroff ◽  
R B Parad ◽  
P D Barnes ◽  
J P Madsen ◽  
B R Benacerraf
Keyword(s):  
Posterior Fossa ◽  
Arachnoid Cyst ◽  
In Utero ◽  
Dandy Walker Malformation ◽  
Walker Malformation

Fetal MRI of a Severe Dandy-Walker Malformation with an Enlarged Posterior Fossa Cyst Causing Severe Hydrocephalus

2005 ◽  
Vol 20 (6) ◽  
pp. 524-527 ◽  
Author(s):  
Mehmet Teksam ◽  
Umut Ozyer ◽  
Alexander McKinney ◽  
Ismail Kirbas ◽  
Banu Cakir
Keyword(s):  
Posterior Fossa ◽  
Fetal Mri ◽  
Dandy Walker Malformation ◽  
Posterior Fossa Cyst ◽  
Walker Malformation ◽  
Severe Hydrocephalus

scholarly journals A case of severe basilar invagination and AAD, corrected using the technique of DCER—distraction, compression, extension, reduction (with spacer + universal reducer)

2020 ◽  
Vol 3 (1) ◽  
pp. V9
Author(s):  
P. Sarat Chandra ◽  
Mohit Agarwal
Keyword(s):  
Posterior Fossa ◽  
Congenital Anomalies ◽  
Basilar Invagination ◽  
Link Type ◽  
Forward Translation ◽  
Additional Correction ◽  
Spinal Compression ◽  
Posterior Fossa Dermoid

The author has described his own technique of DCER (distraction, compression, extension, and reduction) to reduce and realign the deformity and relieve spinal compression (indicated in congenital anomalies with occipitalized C1 arch). In addition, he developed special C1–2 spacers and a universal reducer. Here, a 30-year-old male with severe BI (20 mm, above the clivus) with AAD underwent the technique of spacer placement (distraction) followed by cable reduction (leading to compression and extension at the occiput–C1–C2 region). Another short example is presented where an 8-year-old boy (severe BI, AAD with posterior fossa dermoid) underwent additional correction—C2 forward translation and excision of the dermoid.The video can be found here: https://youtu.be/XIMpkYjxgRk

scholarly journals Posterior Fossa Venous Drainage

2021 ◽  
Vol 12 ◽  
Author(s):  
María Angeles de Miquel
Keyword(s):  
Posterior Fossa ◽  
Special Interest ◽  
Fetal Development ◽  
Venous Drainage ◽  
Inferior Petrosal Sinus ◽  
Vein Of Galen ◽  
Venous Anatomy ◽  
Anatomical Structures ◽  
Superior Petrosal Sinus

This paper aims to make simple the evaluation of the main veins related to the brainstem and cerebellum. Posterior fossa venous drainage is best understood in context with its three main collectors: superior: toward the Vein of Galen; posterior: toward the torcular complex; and anterior: toward the superior petrosal sinus. A fourth possible drainage path, often harder to distinguish, is directed toward the inferior petrosal sinus. Veins of these four systems are frequently connected to one another. Despite traditionally being considered less regular than its arterial disposition, posterior fossa venous anatomy follows specific patterns that are easy to identify. The three more representative veins of each venous confluent have been selected, to help in recognizing them angiographically. Since pial large veins are primarily located over the surface of the encephalon, most related anatomical structures can be confidently identified. This is of special interest when angiographic 2D or 3D studies are evaluated and provide fundamental assistance in locating precise structures. To better aid in understanding venous disposition, an overview of embryologic and fetal development is also discussed.

Living the heart in three dimensions: applications of 3D printing in CHD

2019 ◽  
Vol 29 (06) ◽  
pp. 733-743 ◽  
Author(s):  
Mari Nieves Velasco Forte ◽  
Tarique Hussain ◽  
Arno Roest ◽  
Gorka Gomez ◽  
Monique Jongbloed ◽  
...  
Keyword(s):  
3D Printing ◽  
Heart Surgery ◽  
Wide Spectrum ◽  
Three Dimensional ◽  
Structural Heart Disease ◽  
Medical Personnel ◽  
Three Dimensions ◽  
Patient Specific ◽  
3D Printed

AbstractAdvances in biomedical engineering have led to three-dimensional (3D)-printed models being used for a broad range of different applications. Teaching medical personnel, communicating with patients and relatives, planning complex heart surgery, or designing new techniques for repair of CHD via cardiac catheterisation are now options available using patient-specific 3D-printed models. The management of CHD can be challenging owing to the wide spectrum of morphological conditions and the differences between patients. Direct visualisation and manipulation of the patients’ individual anatomy has opened new horizons in personalised treatment, providing the possibility of performing the whole procedure in vitro beforehand, thus anticipating complications and possible outcomes. In this review, we discuss the workflow to implement 3D printing in clinical practice, the imaging modalities used for anatomical segmentation, the applications of this emerging technique in patients with structural heart disease, and its limitations and future directions.

Sign in / Sign up

Export Citation Format

Share Document