hs/bv/nl/nl
Date : 00.00.00

Name of the Patient : Abc Xyzohd. Riyaz Almn / M / 15 yrs.
Referred by : Dr. Abc Xyzhtekar.
Examination : M.R.I. of the Brain.

CLINICAL PROFILE :

H/O right sided seizures since the age of 1 year. Detected to have obstructive hydrocephalus and an arachnoid cyst in 0000. Treated conservatively.
Now C/O severe headaches and mild attacks of seizures.

EXAMINATION :

M.R.I of the brain was performed using the following parameters :

5 mm thick T1 Weighted, proton and T2 Weighted axial images.

5 mm thick T1 Weighted and FLAIR coronal images.

5 mm thick T1 Weighted sagittal images.

OBSERVATION :

There is evidence of a well-defined space-occupying lesion which is near isointense to CSF on all the pulse sequences within the interhemispheric fissure, to the right of the midline. This lesion is seen to be extending into the quadrigeminal and superior cerebellar cisterns with a defect in the tentorial leaflet on the right side. There is compression upon the cerebellar vermis.

This lesion is seen to erode the right parietal lobe. There is compression upon the midbrain with anterior displacement and also seen is compression upon the superior aspect of the fourth ventricle.






Also seen is compression upon the third ventricle which is shifted to the left side. There is compression upon the body, atrium and occipital horn of the right lateral ventricle and upon the foramen of Monroe bilaterally. There is resultant dilatation of the left lateral ventricle and of the frontal and temporal horns of the right lateral ventricle.

This lesion is seen to compress upon the adjacent right cerebral hemisphere.

The corpus callosum is not identified.

No obvious vascular anomaly is identified on this study.

IMPRESSION :

The MRI features are suggestive of a cystic lesion in the region of the interhemispheric fissure, to the right of the midline with extensions as described and this most likely represents an arachnoid cyst which may be the result of previous meningitis (? congenital).