Endoscopic removal of a cystic choroid plexus papilloma of the third ventricle: a case report and review of the literature.

Cystic choroid plexus papilloma (CPP) of the third ventricle is rare. The authors have reported a case of cystic CPP resected successfully through neuroendoscopic approach. An 18-year-old young man was admitted to our hospital, presented with blurred vision and paroxysmal, intermittent, severe headache for 1 month as well as nausea and vomiting. The findings of neurological examination were normal except for a bilateral papilledema. Magnetic resonance and computerized tomography revealed a cystic lesion in the third ventricle, which did not furnish a definite diagnosis. The tumor was totally resected through neuroendoscopic approach and was found in histopathological examination to be a CPP. The patient retained free of symptoms at 2 year follow-up. To the best of the authors' knowledge, this is the first reported case of a cystic CPP of the third ventricle involved adult and endoscopic surgery might be a preferred technique to it.