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Frontozygomatic Synostosis
Joseph Junewick, MD FACR
over 6 years ago
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ARSt Case Repository

Neuroepithelial Cyst - Foramen of Lushka

Case Detail

Anatomy: Brain-Spine
Junewick
Joseph Junewick, MD FACR
Diagnostic Category: Developmental or Congenital
Created: over 5 years ago
Updated: over 4 years ago
Tags: PEDS
Modality/Study Types: MR
Activities:
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History

19 month old male with developmental delay.


Case Images


Diagnosis

Neuroepithelial Cyst – Foramen of Lushka

Findings

MR – Small round lesion in the left foramen of Luschka following CSF signal on T1 and T2 without restricted diffusion.

Discussion

The origin of neuroepithelial cysts is still controversial, but they are probably secondary to simple folding of neuroepithelium out of the primitive ventricular system. Neuroepithelial cysts are often associated with the ventricular system or choroid plexus but can occur anywhere. Neuroepithelial cysts are rarely symptomatic although parenchymal compression or disturbed CSF flow may be encountered. At neuroimaging, neuroepithelial cysts appear as round or ovoid cystic lesions with possible septa but without calcification or pathologic enhancement; the attenuation and signal intensity are similar to those of CSF. Differential diagnoses include arachnoid cyst, dermoid cyst, parasitic cyst and CSF loculation secondary to adhesion.

Reference

Bonneville F, Sarrazin JL Marsot-Dupuch K, et al. Unusual Lesions of the Cerebellopontine Angle: A Segmental Approach. Radiographics (2001); 21:419-438.



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