First‐Trimester Sonographic Findings Associated With a Dandy‐Walker Malformation and Inferior Vermian Hypoplasia

Bornstein, Eran; Rodríguez, José Luis Goncalves; Pavón, Erika Carolina Álvarez; Quiroga, Héctor; Or, Dani; Divon, Michael Y.

doi:10.7863/ultra.32.10.1863

Cited by 25 publications

(26 citation statements)

References 10 publications

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“…Our findings were later confirmed by other researches [39,40], regarding Dandy-Walker syndrome, vermian hypoplasia, Blake's pouch cyst, and trisomies [13,18] and triploid fetuses that have measurable abnormalities in the posterior brain [40][41][42][43].…”

Section: Limitations Of the First Trimester Scansupporting

confidence: 79%

CNS Abnormalities at 11-14 Weeks

Iliescu¹,

Comanescu²

2017

Neonat Pediatr Med

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Section: Limitations Of the First Trimester Scansupporting

confidence: 79%

CNS Abnormalities at 11-14 Weeks

Iliescu¹,

Comanescu²

2017

Neonat Pediatr Med

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“…Nevertheless, some studies have shown that an abnormal enlargement of the fourth ventricle in the first trimester can be related to posterior fossa anomalies such as Dandy–Walker malformation, Blake's pouch cyst, vermian hypoplasia and Joubert syndrome. Bornstein et al . reported two first‐trimester cases of enlargement of the posterior fossa that were subsequently diagnosed as Dandy–Walker malformation.…”

Section: Discussionmentioning

confidence: 99%

Non‐visualization of choroid plexus of fourth ventricle as first‐trimester predictor of posterior fossa anomalies and chromosomal defects

Martínez-Ten¹,

Illescas²,

Adiego³

et al. 2018

Ultrasound in Obstet & Gyne

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Non-visualization of the CP-4V in the first trimester appears to be a strong marker of posterior fossa anomalies and chromosomal defects. Qualitative evaluation of this anatomic structure is simple, feasible and reproducible, and its routine assessment during the first-trimester scan may facilitate the early detection of CNS anomalies and associated fetal aneuploidy. Copyright © 2017 ISUOG. Published by John Wiley & Sons Ltd.

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“…Exencephaly is characterized by absence of the cranium (Figure 8) 7 and only minimal disorganized brain, due to incomplete closure of the rostral end of the neural tube. This CME activity reviews the accepted standards for embryonic development and heart rate, and some recently proposed changes in determination of nonviability.…”

Section: Resultsmentioning

confidence: 99%

First Trimester Ultrasound

Cooke

Cheung

Harris

2015

Contemporary Diagnostic Radiology

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The fi rst trimester of pregnancy is a time of literally amazing developments when a single fertilized ovum transforms into a recognizable human fetus in 13 weeks. The high-resolution images from state-of-the-art sonography can reliably detect the number of gestational sacs, embryos, and fetuses present, and complications such as anembryonic pregnancies or pathologic lesions that can occur in the fi rst trimester. These sonographic fi ndings, when used with concurrent laboratory data and the clinical examination, may determine the viability or nonviability of the pregnancy at a single setting, and, furthermore, provide reassurance in most cases of viability. Normal Sonographic First Trimester DevelopmentThe fi rst trimester, by convention, begins 2 weeks after fertilization of the oocyte (assumed to be 4 weeks after the fi rst day of the last normal menstrual cycle) and concludes 12 weeks later. Many key items of information can be obtained during either a routine or an urgent fi rst trimester ultrasound, including gestational age assessment, viability confi rmation, and screening for embryonic or fetal anomalies. For patients who have an uncertain last menstrual period, fi rst trimester ultrasound serves the critical role of establishing the accurate gestational age. Once established, gestational age then serves as the reference point for the growth and development of the fetus. In a patient with a positive pregnancy test and vaginal bleeding, or other signs or symptoms, the ultrasound can help to determine viability of the pregnancy by comparing the current products of conception with expected gestational age-matched fi ndings.For patients with an uncertain last menstrual period, fi rst trimester ultrasound serves the critical role of establishing the accurate gestational age.The earliest feature to indicate intrauterine pregnancy by ultrasound is the gestational sac, and its measurement is used to determine the gestational age. At its earliest detectable V o l u m e 3 8 • N u m b e r 2 J a n u a r y 1 5 , 2 0 1 5 Lippincott Continuing Medical Education Institute, Inc., is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. Lippincott Continuing Medical Education Institute, Inc., designates this enduring material for a maximum of 2 AMA PRA Category 1 Credits™. Physicians should only claim credit commensurate with the extent of their participation in the activity. To earn CME credit, you must read the CME article and complete the quiz and evaluation on the enclosed answer form, answering at least seven of the 10 quiz questions correctly. This continuing medical education activity expires on April 13, 2015. Dr. Cooke is Radiology Resident,The authors and all staff in a position to control the content of this CME activity and their spouses/life partners (if any) have disclosed that they have no relationships with, or fi nancial interests in, any commercial organizations pertaining to this educational activity. CME Category: Women's Imagin...

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First‐Trimester Sonographic Findings Associated With a Dandy‐Walker Malformation and Inferior Vermian Hypoplasia

Cited by 25 publications

References 10 publications

CNS Abnormalities at 11-14 Weeks

CNS Abnormalities at 11-14 Weeks

Non‐visualization of choroid plexus of fourth ventricle as first‐trimester predictor of posterior fossa anomalies and chromosomal defects

First Trimester Ultrasound

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