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British Journal of Radiology (2007) 80, e137-e140
© 2007 British Institute of Radiology
doi: 10.1259/bjr/31817019
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Congenital cystic eye: features on MRI

R Gupta, MD A Seith, MD B Guglani, MD and T P Jain, MD

Department of Radio-diagnosis, All India Institute of Medical Sciences, New Delhi, India


Figure 1
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  		Figure 1. (a) Axial T1 weighted (repetition time (TR) 450/echo time (TE) 14) image of the orbits shows a complex mass in the left orbit. Anterior component is isointense to muscle. Posterior cystic component is well defined homogeneous, low signal intensity similar to vitreous/cerebrospinal fluid (CSF). (b) Axial T2 weighted (TR 3000/TE 95) image of the orbits shows the soft tissue component to be heterogeneously hyperintense. The cyst appears brightly hyperintense with smooth thin walls. No normal orbital contents such as extraocular muscles or globe can be identified. (c) Axial post-gadolinium fat saturated T1 weighted image shows heterogeneous enhancement of the anterior soft tissue mass. Enhancement is much more than brain parenchyma.

 

Figure 2
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  		Figure 2. (a) Sagittal T2 weighted fat saturated image shows a thin hypointense optic nerve stalk attached to the tip of the pyriform cyst traversing through the optic canal. No intracranial communication of the mass is seen and the optic canal is not widened. (b) Axial fat saturated T2 weighted image shows the thin optic nerve stalk joining the right optic nerve at a malformed optic chiasm (arrow). Also noted is the lack of any area of signal loss in the soft tissue mass on fat suppression.

 

Figure 3
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  		Figure 3. SagittalT2 weighted (repetition time (TR) 500/echo time (TE) 96) image of the brain in the midline shows complete agenesis of corpus callosum. The cingulate gyrus is absent and there is characteristic radial arrangement of gyri along the interhemispheric fissure.

 

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  		Figure 4. Axial inversion recovery(repetition time (TR) 6490/echo time (TE) 67/inversion time (TI) 350) image at the level of sylvain fissure shows scattered areas of grey matter intensity in left frontotemporal subcortical regions. The left lateral ventricle is small. Right occipital horn is enlarged suggestive of colpocephaly.

 




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