[ XXXX . Diagnosis, surgical results and complications].

@entity1 @entity5 @entity4 @entity3648 @entity281 @entity1653 @entity204
@entity1653 are @entity5 arisising from arachnoid cells and represent the commonest asymptomatic @entity5 . We analysed 69 @entity3648 managed by the @entity5 Group of the Clinics Hospital of Medicine School of S  o Paulo University (September 1995 to September 1997). Age, sex, @entity4 degree, @entity5 site, surgical complications and mortality were studied. @entity4 degree was defined by radiological methods (CT and MRI). Forty-seven @entity1 were @entity1 and average age was 58 years. Type II of @entity4 degree was predominant (38.7%). Twenty-nine @entity1 had @entity1653 and 40 presented @entity5 . Simpson I resection was obtained in 48 procedures, II in 18 and III in two surgical removals. Nine cases complicated (transitory deficits, 6; permanent @entity281 , 2). @entity204 occurred in two @entity1 . Morbity and mortality had relation with age, falx @entity5 and attempt of radical surgical removal. @entity4 degree did not modify mortality and morbidity rates.
