Choroid Plexus Carcinoma

Choroid plexus carcinoma is a cancerous (malignant) brain tumor that forms in choroid plexus tissue. This tissue lines the fluid-filled spaces (ventricles) in your brain. It helps make cerebrospinal fluid, which cushions and protects your brain and spinal cord.

Choroid plexus carcinoma is also known as a grade 3 choroid plexus tumor. These fast-growing tumors often spread in cerebrospinal fluid throughout the central nervous system, making them difficult to treat.

How common is choroid plexus carcinoma?

Choroid plexus carcinoma is rare. There are three types of choroid plexus tumors and, in general, they account for less than 1% of all brain tumors. Of the three types of choroid plexus tumors, choroid plexus carcinomas are the rarest and the only kind that’s cancerous. These tumors are more likely to affect infants and children.