Choroid plexus papilloma

**Choroid plexus papilloma**
*Classification & external resources*

Brain scan of an affected patient:The affected tumour area is white
ICD-10	C71.5
ICD-9	191.5
ICD-O:	9390
eMedicine	radio/171
MeSH	D020288

A Choroid plexus papilloma (CPP) is a a rare, slow-growing, histologically benign intracranial neoplasm or tumor that is commonly located in the ventricular system of the choroid plexus. It may obstruct the cerebrospinal fluid flow, causing increased intracranial pressure.

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Pathophysiology

The tumor is neuroectodermal in origin and similar in structure to a normal choroid plexus. They may be created by epithelial cells of the choroid plexus.

Frequency and age affected

Internationally tumors of the choroid plexus are rare, accounting for 0.4-0.6% of all intracranial neoplasms. It most commonly affects young children under the age of 5 with a mean patient age of 5.2 years.

Signs and symptoms

Signs of the tumor resulting from increased intracranial pressure is present in 91% of patients, with Vomiting, homonymous visual field defects and headache the most common symptoms

Surgical treatment

Choroid plexus papillomas are benign tumors that are usually cured by surgery; malignant progression has been rarely reported.

References

http://www.emedicine.com/radio/topic171.htm

v • d • e Nervous tissue tumors (ICD-O 9350-9589)
Miscellaneous tumors (9350-9379)	Craniopharyngioma - Pinealoma - Chordoma
Glioma (9380-9489)	Gliomatosis cerebri - Oligoastrocytoma - Choroid plexus papilloma - Ependymoma - Astrocytoma (Pilocytic astrocytoma, Glioblastoma multiforme) - Dysembryoplastic neuroepithelial tumour - Oligodendroglioma - Medulloblastoma - Primitive neuroectodermal tumor
Neuroepitheliomatous (9490-9529)	Ganglioneuroma - Neuroblastoma - Atypical teratoid rhabdoid tumor - Retinoblastoma - Esthesioneuroblastoma
Meningiomas (9530-9539)	Meningioma
Nerve sheath tumor (9540-9579)	Neurofibroma (Neurofibrosarcoma, Neurofibromatosis) - Schwannoma - Neurinoma - Acoustic neuroma - Neuroma
see also brain tumors (though not all brain tumors are of nervous tissue)