We retrospectively analyzed the prevalence and surgical outcomes of @entity438 in the elderly for the past five years. Between 1998 and 2002, we collected data from 575 subjects with @entity439 who had no history of @entity510 ( @entity510 ). One hundred and eighty-two of these @entity1 (31.7%) were aged > or = 70 years and they had 233 @entity439 . The proportion of older @entity1 among all subjects increased significantly from 21.4% in 1998 to 40.3% in 2002. @entity439 found in the elderly had a predominance of female, higher frequency of @entity439 , and lower frequency of anterior communicating @entity438 when compared with those in the younger @entity1 . The majority of intradural @entity439 detected in the elderly were less than 10 mm in diameter (84.8%). One hundred and eleven out of 224 intradural @entity439 in the elderly were treated (49.6%); most @entity439 were directly clipped, while only 13 @entity439 including six @entity438 were coiled endovascularly. Among the 83 elderly subjects who underwent direct surgery, perioperative @entity532 appeared in seven subjects (morbidity 8.4%, mortality 1.2%). No @entity510 occurred postoperatively and conservatively during 1-5 years of follow-up. Since the rupture rate of small @entity439 without @entity510 history is reported to be low, surgical indication should be considered with care particularly in the elderly.

Surgical treatment of XXXX in the elderly.

@entity1 :: ('9606', 'Species') :: ['patients'] @entity510 :: ('MESH:D013345', 'Disease') :: ['SAH', 'subarachnoid hemorrhage'] @entity532 :: ('MESH:D003925', 'Disease') :: ['complication'] @entity439 :: ('MESH:D000783', 'Disease') :: ['aneurysms', 'unruptured aneurysms', 'multiple aneurysms', 'Unruptured aneurysms'] @entity438 :: ('MESH:D002532', 'Disease') :: ['unruptured cerebral aneurysms', 'artery aneurysms', 'basilar artery aneurysms']
@entity438 :: (MESH:D002532,Disease) :: ['unruptured cerebral aneurysms']
