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A cerebral laceration is a type of traumatic brain injury that occurs when the tissue of the brain is mechanically cut or torn.〔 〕 The injury is similar to a cerebral contusion; however, according to their respective definitions, the pia-arachnoid membranes are torn over the site of injury in laceration and are not torn in contusion.〔 〕〔 〕 Lacerations require greater physical force to cause than contusions,〔 but the two types of injury are grouped together in the ICD-9 and ICD-10 classification systems. ==Signs and symptoms== A fifth of people with cerebral lacerations have a lucid interval and no significant changes in level of consciousness.〔 The level of consciousness decreases as the laceration bleeds and blood begins to build up within the skull.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「cerebral laceration」の詳細全文を読む スポンサード リンク
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