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  • Title: Concomitant choroid plexus papillomas involving the third and fourth ventricles: A case report and review of the literature.
    Author: Karim A, Fowler M, McLaren B, Cardenas R, Patwardhan R, Nanda A.
    Journal: Clin Neurol Neurosurg; 2006 Sep; 108(6):586-9. PubMed ID: 15963638.
    Abstract:
    Choroid plexus papillomas (CPP) are histopathologically benign and rare central nervous system (CNS) neoplasms arising from the epithelium of the choroid plexus. The most common site of presentation of these lesions is in the fourth ventricle in adults and lateral ventricles in children. Third ventricular CPP are uncommon. In this study, we present a case of a 66-year-old woman with complaints of progressive confusion, lethargy, and weakness who was found to have concomitant third and fourth ventricular masses on imaging studies. The patient underwent a biopsy of the third ventricular mass. The biopsy was followed by staged resections of the fourth and third ventricular masses, respectively. Pathology from the biopsy and both resections was benign CPP. Multifocal concomitant CPP is rare. Concomitant CPPs may be secondary to mere coincidental tumor occurrence or to biologic seeding of cerebrospinal fluid (CSF) from a primary CPP despite otherwise benign histopathology. The primary treatment for CPP is surgical resection. Post-operative chemotherapy or radiation for CPP is of controversial benefit.
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