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"CHOROID PLEXUS PAPILLOMA"

“ More common in children aged less than 5 years, mostly found in the lateral ventricles adjacent to the trigone. CSF production is increase...

More common in children aged less than 5 years, mostly found in the lateral ventricles adjacent to the trigone. CSF production is increased, resulting in hydrocephalus. These are benign tumours; it can demonstrate drop metastases to the spine 
however, up to 20% become malignant.
CT
•  Smooth, lobulated, iso-hyperdense mass with(‘frond-like’) with punctate calcification 
•  homogeneous  Intense enhancement with contrast
MRI
•  predominantly intermediate and heterogeneous   on both T1 and T2, avid contrast enhancement