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Brainstem–vermis and brainstem–tentorium angles allow accurate categorization of fetal upward rotation of cerebellar vermis

Volpe, P. ; Contro, E. ; De Musso, F. ; Ghi, T. ; Farina, A. ; Tempesta, A. ; Volpe, G. ; Rizzo, N. ; Pilu, G.

Ultrasound in obstetrics & gynecology, 2012-06, Vol.39 (6), p.632-635 [Periódico revisado por pares]

Chichester, UK: John Wiley & Sons, Ltd

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Título:
Brainstem–vermis and brainstem–tentorium angles allow accurate categorization of fetal upward rotation of cerebellar vermis
Autor: Volpe, P. ; Contro, E. ; De Musso, F. ; Ghi, T. ; Farina, A. ; Tempesta, A. ; Volpe, G. ; Rizzo, N. ; Pilu, G.
Assuntos: Arachnoid Cysts - diagnostic imaging ; Arachnoid Cysts - embryology ; Biological and medical sciences ; Blake's pouch cyst ; Brain ; Brain Stem - abnormalities ; Brain Stem - diagnostic imaging ; Brain Stem - embryology ; Cerebellum - abnormalities ; Cerebellum - diagnostic imaging ; Cerebellum - embryology ; congenital anomalies ; Cranial Fossa, Posterior - abnormalities ; Cranial Fossa, Posterior - diagnostic imaging ; Cranial Fossa, Posterior - embryology ; Dandy-Walker Syndrome - diagnostic imaging ; Dandy-Walker Syndrome - embryology ; Dandy–Walker malformation ; Diagnosis, Differential ; Female ; fetus ; Gestational Age ; Gynecology. Andrology. Obstetrics ; Humans ; Malformations of the nervous system ; Medical sciences ; Neurology ; Pregnancy ; prenatal diagnosis ; Reproducibility of Results ; Ultrasonography, Prenatal - methods ; ultrasound ; vermian hypoplasia
É parte de: Ultrasound in obstetrics & gynecology, 2012-06, Vol.39 (6), p.632-635
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Descrição: Objective To evaluate the role of the brainstem–vermis (BV) and brainstem–tentorium (BT) angles in the differential diagnosis of upward rotation of the fetal cerebellar vermis. Methods The BV and BT angles were measured retrospectively on median sonographic views of the brain in 31 fetuses at 19–28 weeks' gestation with upward rotation of the cerebellar vermis due to Blake's pouch cyst (n = 12), Dandy–Walker malformation (n = 12) and cerebellar vermian hypoplasia (n = 7). Eighty normal fetuses at 20–24 weeks were included as controls. Results In the control group, BV and BT angles were 9.1 ± 3.5° (range, 4–17°) and 29.3 ± 5.8° (range, 21–44°), respectively. The BV angle was significantly increased in each of the three subgroups of anomalies: Blake's pouch cyst (23 ± 2.8°; range, 19–26°), vermian hypoplasia (34.9 ± 5.4°; range, 24–40°) and Dandy–Walker malformation (63.5 ± 17.6°; range, 45–112°), the angle increasing with increasing severity of the condition. The BT angle had a similar pattern but there was overlap among the different groups. Conclusion The BV angle and, to a lesser degree, the BT angle are simple and reproducible measurements that provide valuable additional information for the categorization of upward rotation of the fetal cerebellar vermis. From mid gestation, a BV angle > 45° is strongly suggestive of a Dandy–Walker malformation, while a measurement < 30° favors the diagnosis of a Blake's pouch cyst. Copyright © 2012 ISUOG. Published by John Wiley & Sons, Ltd.
Editor: Chichester, UK: John Wiley & Sons, Ltd
Idioma: Inglês

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Brainstem–vermis and brainstem–tentorium angles allow accurate categorization of fetal upward rotation of cerebellar vermis

Volpe, P. ; Contro, E. ; De Musso, F. ; Ghi, T. ; Farina, A. ; Tempesta, A. ; Volpe, G. ; Rizzo, N. ; Pilu, G.

Chichester, UK: John Wiley & Sons, Ltd

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