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Tectal plate dysmorphism in atretic cephaloceles: an underrecognized but frequent imaging feature
Seda Kaynak Sahap1, Beyza Nur Atalan2, Suat Fitoz1
1Department of Pediatric Radiology, Ankara University, Faculty of Medicine, Ankara, Turkey.
European Journal of Radiology
|June 1, 2026
Summary
Tectal plate dysmorphism, a common finding in atretic cephalocele patients, is often overlooked. This imaging feature may indicate shared developmental origins with other midline abnormalities.
Area of Science:
- Neuroimaging
- Pediatric Radiology
- Developmental Biology
Background:
- Atretic cephalocele is a posterior fossa malformation.
- Tectal plate morphology is crucial for understanding brain development.
Purpose of the Study:
- To systematically evaluate tectal plate morphology in patients with atretic cephaloceles.
- To determine if tectal dysmorphism is an underrecognized imaging feature.
Main Methods:
- Retrospective review of MRI scans from 13 pediatric patients with atretic cephaloceles.
- Assessment of tectal plate contour, thickness, and beaking.
- Evaluation of associated venous anomalies, fibrous stalk, CSF cleft, tentorial abnormalities, and midline/posterior fossa anomalies.
Main Results:
- Tectal plate dysmorphism was present in 61.5% of patients, with beaking in 75% of those cases.
- Persistent falcine sinus (61.5%) and tentorial peaking (100%) were common.
- Enlarged superior cerebellar cistern (92.3%) and other midline/posterior fossa anomalies were noted.
Conclusions:
- Tectal dysmorphism is a frequent, underrecognized feature of atretic cephalocele.
- Association with venous anomalies suggests a shared developmental pathway.
- This finding may offer additional diagnostic value in pediatric neuroimaging.
