[Two treated cases of infectious endocarditis with subsequent rupture of cerebral aneurysm].

Infectious cerebral aneurysm secondary to infectious endocarditis is susceptible to rupture and its prognosis is unfavorable with high mortality. Recently, we encountered two cases (a 20-year-old man and a 21-year-old woman) with intracranial bleeding due to this disease at the Department of Surgery, Aomori Rosai Hospital, and succeeded in replacing the mitral valve. Based on the present case and related reports in Japan and abroad, the importance of immediate appropriate brain surgical treatment and subsequent radical treatment such as replacement of the mitral valve for infectious endocarditis is shown for improvement in the lifesaving rate for intracranial bleeding due to the present disease.