Pineal region lesion masquerading choroid plexus papilloma: case report.
BACKGROUND
Choroid plexus papillomas (CPPs) are rare intracranial neoplasms, especially in the third ventricle. We report a patient with a posterior third ventricular CPP extending into the pineal that radiographically and clinically presented as a pineal region lesion.


METHODS
In a 51-year-old female with headache and upward gaze impairment radiological examination showed a mass in the pineal region obstructing the aqueduct of Sylvius and causing hydrocephalus. After ventriculoperitoneal shunting the tumor was approached through the infratentorial-supracerebellar approach and pathological examination revealed a typical CPP.


CONCLUSIONS
This case represents an unusual presentation of an intracranial CPP. This entity should be considered an extremely rare cause of a lesion in the pineal region.
Kroppenstedt
Stefan Nikolaus
SN
Department of Neurosurgery, Charite, Campus Virchow, Humboldt-University of Berlin, Berlin, Germany.
Golfinos
John
J
Sonntag
Volker K H
VK
Spetzler
Robert F
RF
D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D019635:Neurosurgical Procedures / Q000379:methods; D020288:Papilloma, Choroid Plexus / Q000473:pathology* / Q000601:surgery; D010871:Pinealoma / Q000473:pathology* / Q000601:surgery; D011182:Postoperative Care; D020542:Third Ventricle / Q000473:pathology / Q000601:surgery