Discovered on routine intraventricular hemorrhage (IVH) screening.
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Bilateral connatal cysts. The ventricles are normal in volume and symmetry with no evidence of intracranial hemorrhage.
The brain is normal in parenchymal echotexture and architecture. No mass effect or midline shift is seen. The posterior fossa is within normal limits.
Impression: No intracranial hemorrhage seen. Normal ventricular size. Stable bilateral connatal cysts.
Connatal cysts are cystic lesions adjacent to the superolateral margins of the body and/or frontal horns of the lateral ventricles. Although previously considered to represent an ischemic insult, they are now considered to represent a normal variant. Connatal cysts have a reported incidence of 0.7% in pre-term low birth weight infants and usually resolve on follow up imaging.
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- PalBR, Preston PR, Morgan ME, Rushton DI, Durbin GM. Frontal horn thin walled cysts in pre-term neonates are benign. Arch Dis Child Fetal Neonatal Ed2001; 85: F187–F193
- Epelman M, Daneman A, Blaser SI et-al. Differential diagnosis of intracranial cystic lesions at head US: correlation with CT and MR imaging. Radiographics. 26 (1): 173-96