Unruptured Cerebral Aneurysms Do Not Shrink When They Rupture: Multicenter Collaborative Aneurysm Study Group
Abstract BACKGROUND: The International Study of Intracranial Aneurysms found that for patients with no previous history of subarachnoid hemorrhage, small (< 7 mm) anterior circulation and posterior circulation aneurysms had a 0% and 2.5% risk of subarachnoid hemorrhage over 5 years, respectively....
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| Veröffentlicht in: | Neurosurgery 2011-01, Vol.68 (1), p.155-161 |
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| creator | Rahman, Maryam Ogilvy, Christopher S. Zipfel, Gregory J. Derdeyn, Colin P. Siddiqui, Adnan H. Bulsara, Ketan R. Kim, Louis J. Riina, Howard A. Mocco, J. Hoh, Brian L. |
| description | Abstract
BACKGROUND:
The International Study of Intracranial Aneurysms found that for patients with no previous history of subarachnoid hemorrhage, small (< 7 mm) anterior circulation and posterior circulation aneurysms had a 0% and 2.5% risk of subarachnoid hemorrhage over 5 years, respectively.
OBJECTIVE:
To determine whether cerebral aneurysms shrink with rupture.
METHODS:
The clinical databases of 7 sites were screened for patients with imaging of cerebral aneurysms before and after rupture. Inclusion criteria included documented subarachnoid hemorrhage by imaging or lumbar puncture and intracranial imaging before and after cerebral aneurysm rupture. The patients were evaluated for aneurysm maximal height, maximal width, neck diameter, and other measurement parameters. Only a change of ≥ 2 mm was considered a true change.
RESULTS:
Data on 13 patients who met inclusion criteria were collected. The median age was 60, and 11 of the 13 patients (84.6%) were female. Only 5 patients had posterior circulation aneurysms. None of the aneurysms had a significant decrease in size. One aneurysm decreased by 1.8 mm in maximum size after rupture (7.7%). Six aneurysms had an increase in maximum size of at least 2 mm after rupture (46.2%) with a mean increase of 3.5 mm (± 0.5 mm).
CONCLUSION:
Unruptured aneurysms do not shrink when they rupture. The large percentage of ruptured small aneurysms in previous studies were likely small before they ruptured. |
| doi_str_mv | 10.1227/NEU.0b013e3181ff357c |
| format | Article |
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BACKGROUND:
The International Study of Intracranial Aneurysms found that for patients with no previous history of subarachnoid hemorrhage, small (< 7 mm) anterior circulation and posterior circulation aneurysms had a 0% and 2.5% risk of subarachnoid hemorrhage over 5 years, respectively.
OBJECTIVE:
To determine whether cerebral aneurysms shrink with rupture.
METHODS:
The clinical databases of 7 sites were screened for patients with imaging of cerebral aneurysms before and after rupture. Inclusion criteria included documented subarachnoid hemorrhage by imaging or lumbar puncture and intracranial imaging before and after cerebral aneurysm rupture. The patients were evaluated for aneurysm maximal height, maximal width, neck diameter, and other measurement parameters. Only a change of ≥ 2 mm was considered a true change.
RESULTS:
Data on 13 patients who met inclusion criteria were collected. The median age was 60, and 11 of the 13 patients (84.6%) were female. Only 5 patients had posterior circulation aneurysms. None of the aneurysms had a significant decrease in size. One aneurysm decreased by 1.8 mm in maximum size after rupture (7.7%). Six aneurysms had an increase in maximum size of at least 2 mm after rupture (46.2%) with a mean increase of 3.5 mm (± 0.5 mm).
CONCLUSION:
Unruptured aneurysms do not shrink when they rupture. The large percentage of ruptured small aneurysms in previous studies were likely small before they ruptured.</description><identifier>ISSN: 0148-396X</identifier><identifier>EISSN: 1524-4040</identifier><identifier>DOI: 10.1227/NEU.0b013e3181ff357c</identifier><identifier>PMID: 21150760</identifier><identifier>CODEN: NRSRDY</identifier><language>eng</language><publisher>Hagerstown, MD: Oxford University Press</publisher><subject>Adolescent ; Adult ; Aged ; Aged, 80 and over ; Aneurysm, Ruptured - pathology ; Aneurysms ; Biological and medical sciences ; Cerebral Angiography ; Female ; Hemorrhage ; Humans ; Intracranial Aneurysm - pathology ; Magnetic Resonance Angiography ; Male ; Medical sciences ; Middle Aged ; Neurosurgery ; Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases ; Young Adult</subject><ispartof>Neurosurgery, 2011-01, Vol.68 (1), p.155-161</ispartof><rights>Copyright © 2010 by the Congress of Neurological Surgeons</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c404t-60140c20f727cbd6cf4177daab9bb240650ef7a42c59c5ab2bddf7cf536904343</citedby><cites>FETCH-LOGICAL-c404t-60140c20f727cbd6cf4177daab9bb240650ef7a42c59c5ab2bddf7cf536904343</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,4009,27902,27903,27904</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=23693493$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/21150760$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Rahman, Maryam</creatorcontrib><creatorcontrib>Ogilvy, Christopher S.</creatorcontrib><creatorcontrib>Zipfel, Gregory J.</creatorcontrib><creatorcontrib>Derdeyn, Colin P.</creatorcontrib><creatorcontrib>Siddiqui, Adnan H.</creatorcontrib><creatorcontrib>Bulsara, Ketan R.</creatorcontrib><creatorcontrib>Kim, Louis J.</creatorcontrib><creatorcontrib>Riina, Howard A.</creatorcontrib><creatorcontrib>Mocco, J.</creatorcontrib><creatorcontrib>Hoh, Brian L.</creatorcontrib><title>Unruptured Cerebral Aneurysms Do Not Shrink When They Rupture: Multicenter Collaborative Aneurysm Study Group</title><title>Neurosurgery</title><addtitle>Neurosurgery</addtitle><description>Abstract
BACKGROUND:
The International Study of Intracranial Aneurysms found that for patients with no previous history of subarachnoid hemorrhage, small (< 7 mm) anterior circulation and posterior circulation aneurysms had a 0% and 2.5% risk of subarachnoid hemorrhage over 5 years, respectively.
OBJECTIVE:
To determine whether cerebral aneurysms shrink with rupture.
METHODS:
The clinical databases of 7 sites were screened for patients with imaging of cerebral aneurysms before and after rupture. Inclusion criteria included documented subarachnoid hemorrhage by imaging or lumbar puncture and intracranial imaging before and after cerebral aneurysm rupture. The patients were evaluated for aneurysm maximal height, maximal width, neck diameter, and other measurement parameters. Only a change of ≥ 2 mm was considered a true change.
RESULTS:
Data on 13 patients who met inclusion criteria were collected. The median age was 60, and 11 of the 13 patients (84.6%) were female. Only 5 patients had posterior circulation aneurysms. None of the aneurysms had a significant decrease in size. One aneurysm decreased by 1.8 mm in maximum size after rupture (7.7%). Six aneurysms had an increase in maximum size of at least 2 mm after rupture (46.2%) with a mean increase of 3.5 mm (± 0.5 mm).
CONCLUSION:
Unruptured aneurysms do not shrink when they rupture. The large percentage of ruptured small aneurysms in previous studies were likely small before they ruptured.</description><subject>Adolescent</subject><subject>Adult</subject><subject>Aged</subject><subject>Aged, 80 and over</subject><subject>Aneurysm, Ruptured - pathology</subject><subject>Aneurysms</subject><subject>Biological and medical sciences</subject><subject>Cerebral Angiography</subject><subject>Female</subject><subject>Hemorrhage</subject><subject>Humans</subject><subject>Intracranial Aneurysm - pathology</subject><subject>Magnetic Resonance Angiography</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Middle Aged</subject><subject>Neurosurgery</subject><subject>Surgery (general aspects). Transplantations, organ and tissue grafts. 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BACKGROUND:
The International Study of Intracranial Aneurysms found that for patients with no previous history of subarachnoid hemorrhage, small (< 7 mm) anterior circulation and posterior circulation aneurysms had a 0% and 2.5% risk of subarachnoid hemorrhage over 5 years, respectively.
OBJECTIVE:
To determine whether cerebral aneurysms shrink with rupture.
METHODS:
The clinical databases of 7 sites were screened for patients with imaging of cerebral aneurysms before and after rupture. Inclusion criteria included documented subarachnoid hemorrhage by imaging or lumbar puncture and intracranial imaging before and after cerebral aneurysm rupture. The patients were evaluated for aneurysm maximal height, maximal width, neck diameter, and other measurement parameters. Only a change of ≥ 2 mm was considered a true change.
RESULTS:
Data on 13 patients who met inclusion criteria were collected. The median age was 60, and 11 of the 13 patients (84.6%) were female. Only 5 patients had posterior circulation aneurysms. None of the aneurysms had a significant decrease in size. One aneurysm decreased by 1.8 mm in maximum size after rupture (7.7%). Six aneurysms had an increase in maximum size of at least 2 mm after rupture (46.2%) with a mean increase of 3.5 mm (± 0.5 mm).
CONCLUSION:
Unruptured aneurysms do not shrink when they rupture. The large percentage of ruptured small aneurysms in previous studies were likely small before they ruptured.</abstract><cop>Hagerstown, MD</cop><pub>Oxford University Press</pub><pmid>21150760</pmid><doi>10.1227/NEU.0b013e3181ff357c</doi><tpages>7</tpages></addata></record> |
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| issn | 0148-396X 1524-4040 |
| language | eng |
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| subjects | Adolescent Adult Aged Aged, 80 and over Aneurysm, Ruptured - pathology Aneurysms Biological and medical sciences Cerebral Angiography Female Hemorrhage Humans Intracranial Aneurysm - pathology Magnetic Resonance Angiography Male Medical sciences Middle Aged Neurosurgery Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases Young Adult |
| title | Unruptured Cerebral Aneurysms Do Not Shrink When They Rupture: Multicenter Collaborative Aneurysm Study Group |
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