Lateral ventricular meningioma encapsulated by the dura-like membrane.
The first case of a ventricular meningioma that was encapsulated by the dura-like membrane is reported. Magnetic resonance imaging (MRI) showed a heterogeneous mass with a low intensity rim in the trigone of the right lateral ventricle of a 63-year-old male. Histological examination revealed that the tumor was a transitional meningioma encapsulated by a thick dura-like membrane. Moreover, abundant clusters of the dura-like connective tissue existed in the tumor, indicating that both the dura-like capsule and the dura-like clusters in the tumor were created by the tumor cells.
Department of Neurosurgery, School of Medicine, Keio University, Tokyo, Japan. kazrmky@mc.med.keio.ac.jp
K
K
Yoshida
S
S
Onozuka
T
T
Kawase
E
E
Ikeda
D004388:Dura Mater / Q000473:pathology*; D006801:Humans; D020547:Lateral Ventricles / Q000473:pathology*; D008279:Magnetic Resonance Imaging; D008297:Male; D008577:Meningeal Neoplasms / Q000473:pathology*; D008579:Meningioma / Q000473:pathology*; D008875:Middle Aged