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Extraventricular Intraparenchymal Choroid Plexus Tumors in Cerebral Hemisphere: A Series of 6 Cases.

Abstract：

OBJECTIVE:Extraventricular intraparenchymal choroid plexus tumors (CPTs) in the cerebral hemisphere are extremely rare. The aim of this study was to investigate the clinical characteristics, radiologic findings, and surgical outcomes of this atypical type of CPT. METHODS:The study comprised 6 patients with pathologically proven extraventricular intraparenchymal CPTs who were surgically treated at Qilu Hospital of Shandong University. The PubMed database was searched for similar cases published before January 2015, and these cases were reviewed. RESULTS:Patients were 5 (83.3%) men and 1 (16.7%) woman with an average age of 46.5 years. Symptoms and signs of CPT were usually associated with increased intracranial pressure and invasion of functional areas by tumor. Magnetic resonance imaging commonly demonstrated a contrast-enhancing intraparenchymal mass with cysts; hydrocephalus was not observed in any cases. Subtotal resection and gross total resection were achieved in 1 (16.7%) and 5 (83.3%) cases, respectively. There were 3 cases (50.0%) of choroid plexus papilloma, 2 cases (33.3%) of atypical choroid plexus papilloma, and 1 case (16.7%) not otherwise specified. There was a low incidence of postoperative complications, and surgical outcomes of CPTs were satisfactory. CONCLUSIONS:In contrast to typical lesions, extraventricular intraparenchymal CPTs in the cerebral hemisphere are rarely associated with hydrocephalus. Magnetic resonance imaging features are key in preoperative diagnosis; nevertheless, it is difficult to distinguish this atypical type of CPT from other lesions. Surgical removal of the tumor is safe and efficacious.

journal_name

World Neurosurg

journal_title

World neurosurgery

authors

Qi Q,Ni S,Zhou X,Huang B,Li X

doi

10.1016/j.wneu.2015.07.004

subject

Has Abstract

pub_date

2015-12-01 00:00:00

pages

1660-7

issue

6

eissn

1878-8750

issn

1878-8769

pii

S1878-8750(15)00870-0

journal_volume

84

pub_type

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