Clinical Presentation
The differentiation of subgroups through MRI quantification of vermian lobules may correlate with varying clinical presentations and neurodevelopmental outcomes [PMID:31595598].
The study identified fetuses with suspected posterior fossa anomalies based on ultrasound findings of abnormal hindbrain spaces at 12-13 weeks' gestation, highlighting early prenatal indicators [PMID:33847428].
Diagnosis
Quantitative fetal MRI assessment, particularly focusing on vermian lobulation, allows for better differentiation and classification of cystic posterior fossa malformations compared to standard neuroradiological methods [PMID:31595598].
In fetuses between 12 and 21 weeks' gestation, the sonographic assessment revealed that the visibility and positioning of the 4V-CP [PMID:33847428] can differentiate between normal development and anomalies such as Dandy-Walker malformation and Blake's pouch cyst, potentially enabling earlier diagnosis.
Repetitive detailed ultrasound evaluations throughout pregnancy, particularly focusing on the posterior fossa, enhanced the diagnostic precision for conditions like Dandy-Walker malformation and Blake's pouch cyst [PMID:33847428].
Prognosis & Follow-up
Enhanced prenatal classification through MRI assessment could lead to more accurate prognostication and tailored parental counseling regarding neurodevelopmental outcomes [PMID:31595598].
References
1 Dovjak GO, Diogo MC, Brugger PC, Gruber GM, Weber M, Glatter S et al.. Quantitative fetal magnetic resonance imaging assessment of cystic posterior fossa malformations. Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology 2020. link 2 Volpe P, De Robertis V, Volpe G, Boito S, Fanelli T, Olivieri C et al.. Position of the choroid plexus of the fourth ventricle in first- and second-trimester fetuses: a novel approach to early diagnosis of cystic posterior fossa anomalies. Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology 2021. link
2 papers cited of 3 indexed.