A 6 x 7mm colloid cyst is identified in the midline at the level of the foraminae of Munro, sharply circumscribed measuring 6mm in diameter, hyperintense on t1 weighted scans, hypointense on t2 weighted scans, and without significant contrast enhancement. No hydrocephalus is evident. The septum pellucidum is dehiscent or perforated adjacent to distortion and gliosis indicating the right transventricular pericallosal surgical approach. Some gliosis is seen on either side of midline in the white matter.
CONCLUSION:
Recurrent colloid cyst.