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[Chronic subdural hematoma with a markedly fibrous hypertrophic membrane. Case report].

Authors
  • Sato, M
  • Kuwana, N
  • Kojima, Y
  • Tanaka, N
  • Kitamura, H
Type
Published Article
Journal
Neurologia medico-chirurgica
Publication Date
Jan 01, 1990
Volume
30
Issue
11 Spec No
Pages
838–841
Identifiers
PMID: 1709461
Source
Medline
License
Unknown

Abstract

A 40-year-old female, who had taken low-dose oral contraceptives for 2 months before onset, developed transient dysarthria, left hemiparesis, and left hemihypesthesia. One month later, a computed tomography (CT) scan revealed a uniformly enhanced, convex-shaped, hypertrophic membrane with a lobulated lumen in the subdural space of the right parietal region. A right parietal craniotomy was performed. The membrane, consisting of elastic-hard, hypertrophic granulation tissue and yellowish, sticky fluid in the lumen, was readily freed and totally extirpated. Subsequently, the patient recovered without persistent symptoms. Light microscopic examination detected the sinusoidal channel layer and the fibrous layer in an alternating configuration, along with intramembranous hemorrhagic foci. Such hypertrophy must have been caused by repeated intramembranous hemorrhages and reactive granulation. Such findings of hematoma membrane have never previously been reported. Thus, this is an interesting case, clearly distinguished from typical chronic subdural hematoma.

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