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A Case of Encapsulated Intracerebral Hematoma Mimicking Metastatic Brain Tumor Arata TOMIYAMA 1 , Kazuya AOKI 1 , Kenichiro SATO 1 , Haruo NAKAYAMA 1 , Junichi HARASHINA 1 , Morito HAYASHI 1 , Hitoshi KIMURA 1 , Takatoshi SAKURAI 1 , Satoshi IWABUCHI 1 , Kei TAKAHASHI 2 , Hitoshi TERADA 3 , Morikazu UEDA 1 , Hirotsugu SAMEJIMA 1 12nd Department of Neurosurgery,Toho University Ohashi Medical Center 2Department of Pathology,Toho University Ohashi Medical Center 32nd Department of Radiology,Toho University Ohashi Medical Center Keyword: encapsulated intracranial hematoma , metastatic brain tumor , diagnosis , DSA , Tl-201 SPECT pp.851-856
Published Date 2006/8/1
DOI https://doi.org/10.11477/mf.1436100273

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  • Abstract
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 We report a case of encapsulated intracranial hematoma (EIH) mimicking metastatic brain tumor. A 77-year old male with a medical history of prostate cancer was admitted to our hospital presenting with progressive left hemiparesis. Previous head CT scan and MRI findings during 3 weeks before admission revealed a subcortical acute to subacute hematoma under the right precentral gyrus with growing perifocal brainedema. The Head DSA showed tumor-stain with vascular compression corresponding to the hemorrhagic mass,and Tl-201 SPECT study revealed high L/N ratio (3.0) and high L/E ratio (0.8). The preoperative diagnosis was metastatic brain tumor originating from prostate cancer,and total removal of the mass was undergone with the postoperative diagnosis of EIH. Neither tumoral component nor vascular malformation was found even by detailed pathological study.

 EIH is a rare variant of intracranial hemorrhage and most of cases in past reports are preoperatively misdiagnosed as malignant brain tumor. In our case,even Tl-201 SPECT and DSA,which are reported as key studies for distinguishing EIH from other brain tumors,demonstrated brain tumor-like findings. It is necessary to consider the possibility of EIH when we encounter hemorrhagic mass in the brain parenchyma even with brain tumor-like radiographical images.


Copyright © 2006, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1251 印刷版ISSN 0301-2603 医学書院

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