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

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.

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

Recurrent Pseudo-TORCH Appearances of the Brain Presenting as “Dandy-Walker” Malformation

2012 ◽  
Vol 15 (1) ◽  
pp. 45-49 ◽  
Author(s):  
Marta C. Cohen ◽  
Ilgin Karaman ◽  
Waney Squier ◽  
Tom Farrel ◽  
Elspeth H. Whitby
Keyword(s):  
Posterior Fossa ◽  
Autosomal Recessive ◽  
Congenital Infection ◽  
Giant Cells ◽  
Cerebellar Vermis ◽  
Inflammatory Infiltration ◽  
Dandy Walker Malformation ◽  
Upward Displacement ◽  
Magnetic Resonance Imaging Mri ◽  
Walker Malformation

Dandy-Walker malformation (DWM) is a developmental abnormality characterized by cystic dilatation of the fourth ventricle, complete or partial agenesis of the cerebellar vermis, and enlarged posterior fossa with upward displacement of the lateral sinuses, tentorium, and torcula. Calcification of brain tissue is a feature of congenital infection, particularly those involving the TORCH ( Toxoplasma gondii, rubella virus, Cytomegalovirus, and herpesvirus) group. An autosomal-recessive congenital infection-like syndrome with intracranial and extracranial calcifications has been categorized as pseudo-TORCH syndrome. We describe two male siblings diagnosed as DWM by ultrasound and by in utero and postmortem magnetic resonance imaging (MRI) but in whom the neuropathology revealed features of intracranial necrosis and calcification in the absence of extracranial calcific deposition. The fetal anomaly was identified by routine prenatal ultrasound scan at 16 weeks. In both cases the postmortem MRI showed bilateral ventriculomegaly with distortion of the overlying cortices, enlarged posterior fossa with a cyst related to small cerebellar hemispheres, and an incomplete cerebellar vermis. The diagnosis of DWM was offered. The histology revealed hypoplastic cerebral hemispheres with poorly cellular developing cortex. The white matter and periventricular matrix were disrupted by areas of necrosis and calcification not associated with any inflammatory infiltration, organisms, inclusions, or giant cells. To our knowledge, these two male siblings are the 1st cases that show pseudo-TORCH syndrome with distinctive intracranial calcification presenting as DWM. An autosomal-recessive or X-linked inheritance needs to be considered. Our study confirms the relevance of the multidisciplinary teamwork involved in the diagnosis of these complex cases.

scholarly journals Dandy-Walker variant with precocious puberty: a rare association

2018 ◽  
Vol 11 (1) ◽  
pp. e226281
Author(s):  
Rajesh Rajput ◽  
Sanat Mishra ◽  
Parul Ahlawat ◽  
Pawan Kumar Yadav
Keyword(s):  
Case Report ◽  
Posterior Fossa ◽  
Precocious Puberty ◽  
Central Precocious Puberty ◽  
Secondary Sexual Characteristics ◽  
Rare Association ◽  
Dandy Walker Malformation ◽  
Secondary Hypothyroidism ◽  
Sexual Characteristics ◽  
Walker Malformation

Precocious puberty is characterised by premature appearance of secondary sexual characteristics before the age of 7 years in girls and 9 years in boys. Dandy-Walker malformation comprises a spectrum of intracranial malformations of the posterior fossa. We present a case of a 7-year-old male child who has presented with features of central precocious puberty and on further evaluation has been found to have Dandy-Walker variant and secondary hypothyroidism. The following case report describes this association which is extremely rare and has never been described in literature.

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.

scholarly journals DANDY-WALKER SYNDROME;

2017 ◽  
Vol 24 (01) ◽  
pp. 47-50
Author(s):  
Qazi Muhammad Zeeshan ◽  
Muhammad Hashim ◽  
Syed Mohammad Maroof Hashmi ◽  
Mohammad Absar Anwar
Keyword(s):  
Posterior Fossa ◽  
Previous History ◽  
Case Series ◽  
Fracture Dislocation ◽  
Common Symptom ◽  
Mortality And Morbidity ◽  
Dandy Walker Malformation ◽  
Posterior Fossa Cyst ◽  
History Of ◽  
Walker Malformation

Introduction: Dandy-Walker Malformation is an inborn condition that includesthe triumvirate of cystic enlargement of the fourth ventricle, posterior fossa distension with riseof the tentorium and agenesis of cerebellar vermis. The purpose of this study is to determinethe Clinical presentation and associated complications, mortality and morbidity of patientundergoing placement of shunt with Y- connector in Dandy Walker Malformation. StudyDesign: Case Series comprised of 85 cases. Setting: Neurosurgery Ward of Tertiary CareHospital in Karachi. Period: February 2011 to December 2015. Methodology: All patients whowere presented in OPD with complaints reminiscent of DWM with accompanied Hydrocephalusand then underwent CT scan Brain without contrast to confirm the diagnosis were admitted.The patients who have previous history of operation and other co-morbid anomalies wereomitted. These patients undergo drainage of Ventricular system and Posterior Fossa cyst wasdone mutually via Dual Shunt including Ventricular-peritoneal and Cysto-peritoneal shunt withY connector. There were few complications and mortality after this surgical intervention whichwas noted for a month. All records were recorded and evaluated by SPSS v.20. Result: Avast majority of patients included were Female. The average age of patients was 2.5 years+/- 1 Standard Deviation. The chief complaint was Hydrocephalus, existing in all patients,after that cerebellar signs in 55 (64.7%) and other signs in 10 (11.8%) patients. Others signsincludes; milestones were delayed, atypical gait and few patients were suffered from psychiatricproblems. Complications which were observed were shunt; Fracture/Dislocation in 10 (11.8%),shunt blockage in 8 (9.4%), malpositioning is also 8 (9.4%), Intracranial Hemorrhage in 7(8.24%) patients and Infection in 10 (11.8%). These complications were observed within amonth of surgery. Unfortunately, two (2.35%) patient were also expired after surgical approach.Conclusion: It is concluded that Dandy Walker Malformation is categorized by a triumvirate.Hydrocephalus is a most common symptom and principal cause of referral to hospitals. Thecommonest difficulty acknowledged after shunting is Malfunction and shunt infections. Thelowest mortality is related to Dual Shunt with Y connector when compared to other approachesfor management of shunt with Y-connector. Thus, it is found to be a worthy decision in givenDWM patients.

DANDY WALKER MALFORMATION: A RARE CASE REPORT

2021 ◽  
pp. 71-72
Author(s):  
Triza Kumar Lakshman ◽  
Yeshwanthini J ◽  
Ravindra S Pukale
Keyword(s):  
Case Report ◽  
Posterior Fossa ◽  
Fourth Ventricle ◽  
Rare Case ◽  
Male Fetus ◽  
Dandy Walker Malformation ◽  
Rare Case Report ◽  
Upward Displacement ◽  
Walker Malformation ◽  
Posterior Fossa Malformation

Dandy-Walker malformation (DWM) or syndrome is a posterior fossa anomaly characterized by agenesis or hypoplasia of the vermis and cystic enlargement of the fourth ventricle causing upward displacement of tentorium and torcula. Most patients have hydrocephalus at the time of diagnosis. DMW is the most common posterior fossa malformation, and it typically occurs sporadically. This is a case report of male fetus that was diagnosed to have Dandy Walker Malformation during the antenatal obstetric scans.

Prenatal ultrasound assessment of brainstem-cerebellar vermis angle. II. Dandy — Walker malformation, Blake’s pouch cyst and cerebellar vermis hypoplasia

2017 ◽  
Author(s):  
O.I. Kozlova , M.V. Medvedev , A.Yu. Blinov et all
Keyword(s):  
Differential Diagnosis ◽  
Posterior Fossa ◽  
Prenatal Ultrasound ◽  
Cerebellar Vermis ◽  
Second Trimester ◽  
Dandy Walker Malformation ◽  
Volume Ultrasound ◽  
Ultrasound Assessment ◽  
Walker Malformation ◽  
The Brain

Objective. To evaluate of the fetal brainstem-cerebellar vermis (BCV) angle with volume ultrasound in the second trimester of gestation in the differential diagnosis of Dandy — Walker malformation (DWM), Blake’s pouch cyst (BPC) and cerebellar vermis hypoplasia (CVH). Methods. The BCV angle was measured on median sagittal sonographic view of the brain in 32 fetuses with anomalies of the posterior fossa at 18–28 weeks of gestation: BPC — 7, CVH — 12, DWM — 13. Results. The BCV angle was < 28° in cases with BPC,  40° — in cases with CVH and increased in all fetuses with DWM ˃ 45°. Conclusion. The BCV angle may be useful for differential diagnosis in cases of BPC, CVH and DWM.

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