Home > Encyclopedia of Cancer > Choroid Plexus Tumors

Definition

Choroid plexus tumors (CPTs) are rare abnormal growths on a part of the brain called the choroid plexus. The choroid plexus is the structure in the brain that produces the cerebrospinal fluid that coats the brain and spinal cord.

Description

There are two types of CPT: choroid plexus papilloma (CPP) and choroid plexus carcinoma (CPC). CPPs account for the majority of all CPTs.

A CPP is a benign, slow-growing, wart-like tumor that tends to grow on the surface of the choroid plexus. CPPs can spread by growing and by multiplying, just like warts, but they do not spread (metastasize) to organs that are not directly attached...