The hidden story of the fourth ventricular choroid plexus: the flower basket of an old anatomist…

Paladini, D.

doi:10.1002/uog.23726

Cited by 1 publication

(2 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the fetus, the posterior cranial fossa has long drawn the attention of researchers. In particular, the cerebellum with its vermis, the fourth ventricle, the cisterna magna and the brainstem have been studied for decades from the second trimester onwards [1][2][3][4][5] . More recently, investigations have extended to the first trimester, thanks to the introduction of high-frequency transducers, both transvaginal and transabdominal, which ensure much higher resolution.…”

Section: Introductionmentioning

confidence: 99%

“…This technological advancement has led to the possibility of detecting open dysraphisms at the end of the first trimester, owing to the identification of highly sensitive endocranial sonographic signs 6,7 , some of which relate to the early recognition of Chiari-II malformations 6,8 . Furthermore, over the last few years, the key role played by the position of the fourth ventricular choroid plexus (4VCP) in the differential diagnosis of cystic vermian abnormalities has emerged, not only in the second trimester 4,5 but also at 12-13 weeks' gestation 9,10 . Hence, it has become clear that the 4VCP is the pivotal anatomical structure to assess in order to characterize and differentiate major posterior fossa anomalies because its position and appearance vary according to the different pathological entities.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

‘Choroid bar’: easy‐to‐seek marker of normal posterior fossa at 12–14 weeks' gestation

Paladini,

Biancotto,

Della Sala

et al. 2024

Ultrasound in Obstet & Gyne

Self Cite

View full text Add to dashboard Cite

ObjectivesOur objectives were: (1) to assess the visualization rate of the choroid bar in a consecutive series of 306 first trimester scans; (2) to verify – in this cohort of fetuses ‐ the normalcy of the posterior fossa later in pregnancy; (3) to confirm the non‐visualization of the choroid bar in a retrospective series of fetuses with posterior fossa malformations.MethodsThe study include a prospective and a retrospective series. The former includes 306 fetuses undergoing routine obstetric ultrasound at our Unit both in the first and the second trimester over the last 6 months, the latter includes 12 cases of posterior fossa malformations. In the prospective study, the choroid bar – defined as a visually continuous, homogeneously hyperechoic thick structure bridging the cisterna magna from side to side – was sought at the end of the 1st trimester nuchal translucency scan. In the retrospective study, previously acquired three‐dimensional volume datasets were processed in order to assess whether the choroid bar could be visualized in case of open spinal dysraphisms and vermian cystic anomalies. In the prospective study patients, the confirmation of a normal posterior fossa was based on the sonographic aspect of this anatomic region at the time of the 2nd trimester anomaly scan at 19‐21 gestational weeks, while in the retrospective study it was based on necropsy results, when available, or further direct imaging of the defect later in pregnancy.ResultsIn the prospective study, the choroid bar could be visualized in all 306 fetuses: on transabdominal ultrasound in 287 (93.8%) cases, on transvaginal in 19 (6.2%). The choroid bar was displayed with a ventral/dorsal approach in 67 (21.9%) cases, with a lateral approach in 56 (18.3%) cases and with both in 183 (59.8%) cases. All 306 cases were confirmed to have a sonographically normal posterior fossa at 19‐21 gestational weeks. On the contrary, in the retrospective study, it was never possible to reproduce the choroid bar.ConclusionsWe have described a new sign – the choroid bar – consistent with a normal posterior fossa at 12‐14 gestational weeks. The choroid bar represents an option to screen for major abnormalities of the posterior fossa, since it allows to suspect both open spinal dysraphisms and posterior fossa cystic malformations being at the same time very easy to visualize, for it can be displayed with all lines of insonation.This article is protected by copyright. All rights reserved.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

‘Choroid bar’: easy‐to‐seek marker of normal posterior fossa at 12–14 weeks' gestation

Paladini,

Biancotto,

Della Sala

et al. 2024

Ultrasound in Obstet & Gyne

Self Cite

View full text Add to dashboard Cite

show abstract

The hidden story of the fourth ventricular choroid plexus: the flower basket of an old anatomist…

Abstract: The hidden story of the fourth ventricular choroid plexus: the flower basket of an old anatomist . . .

Cited by 1 publication

References 19 publications

‘Choroid bar’: easy‐to‐seek marker of normal posterior fossa at 12–14 weeks' gestation

‘Choroid bar’: easy‐to‐seek marker of normal posterior fossa at 12–14 weeks' gestation

Contact Info

Product

Resources

About