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Occipital mass in antenatal sonography.
Adam Rhodes1, Jeremy Neuman2, Jonathan Blau1
1Department of Pediatrics, Staten Island University Hospital Northwell Health, Staten Island, NY, USA.
Journal of Neonatal-Perinatal Medicine
|March 26, 2019
Summary
A fetal extracranial mass initially concerning for encephalocele was diagnosed as a cephalohematoma after birth. This case highlights cephalohematoma as a differential diagnosis for fetal central nervous system masses.
Area of Science:
- Neonatal imaging
- Fetal medicine
- Pediatric neurology
Background:
- A 32-year-old patient at 31 weeks gestation presented with preterm, premature rupture of membranes.
- Initial ultrasound revealed an extracranial mass, raising concerns for encephalocele.
Observation:
- Fetal MRI showed occipital edema without a clear lesion.
- Neonatal examination revealed an occipital mass despite Cesarean delivery.
Findings:
- Postnatal imaging confirmed cephalohematoma, resolving over time.
- Hypothesized cause: chronic trauma from fetal occiput against maternal ischial tuberosity.
Implications:
- This case expands the differential diagnosis for fetal central nervous system masses.
- Highlights the importance of considering cephalohematoma even without vaginal delivery or abdominal trauma.
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