Acute Disappearance of Ruptured Aneurysm Located Near the Origin of the Superior Cerebellar Artery  -Case Report-

Nakau, Hiroya; Nagatani, Hitoshi; Nakau, Reiko; Ametani, Toshio

doi:10.2176/nmc.47.468

Cited by 13 publications

(14 citation statements)

References 18 publications

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“…It should be noted that many of thrombosed non-giant aneurysms were ruptured aneurysms and the patients were relatively younger (mean age 29.4 years, including present case) in the review of the literatures 2,3,6,12,13) . These findings suggest that hemodynamic change (e.g., flow arrest) and arterial change (e.g., contraction of artery or aneurysm) due to aneurysmal rupture play a key role inducing thrombosis of non-giant aneurysms.…”

Section: Discussionmentioning

confidence: 68%

“…Even in giant aneurysms, partial thrombosis is not uncommon in the natural history, however complete angiographic occlusion occurs less frequently 2) . In non-giant aneurysms, complete thrombosis and recanalization has been only rarely reported 2,3,6,9,12,13) . We describe here a very rare case of recanalization of completely thrombosed non-giant saccular aneurysm confused as a de novo aneurysm.…”

Section: Introductionmentioning

confidence: 99%

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Recanalization of Completely Thrombosed Non-Giant Saccular Aneurysm Mimicking asDe NovoAneurysm

Choi

Kim

Jang

et al. 2010

J Korean Neurosurg Soc

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J Korean Neurosurg Soc 48 : [354][355][356] 2010 Partial thrombosis of giant aneurysms is not uncommon however, complete angiographic occlusion occurs less frequently. In the case of non-giant aneurysms, complete thrombosis and recanalization has been rarely reported. A 31-year-old man presented to the emergency department with sudden bursting headache. Brain computed tomography (CT) revealed diffuse subarachnoid hemorrhage on the left side. Both CT angiography (CTA) and digital subtraction angiography showed suspicion of small left anterior choroidal artery aneurysm. We performed surgical exploration. In the operation field, anterior choroidal artery aneurysm of 2×2 mm with broad neck and friable appearance was observed. Because we could not clip without sacrificing the anterior choroidal artery, we performed wrapping only. Follow up CTA after 7 months demonstrated 4 mm right internal carotid artery bifurcation aneurysm. The patient underwent aneurismal neck clipping. During the operation, 9 ×13 mm sized thrombosed aneurysm was detected and completely clipped. We initially thought this aneurysm to be a de novo aneurysm however, it was an aneurysm that had recanalized from a completely thrombosed aneurysm. This case report provides an insight into the potential for complete thrombosis and recanalization of non-giant aneurysms.

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Section: Discussionmentioning

confidence: 68%

Section: Introductionmentioning

confidence: 99%

Recanalization of Completely Thrombosed Non-Giant Saccular Aneurysm Mimicking asDe NovoAneurysm

Choi

Kim

Jang

et al. 2010

J Korean Neurosurg Soc

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“… 14) Although the pathophysiology of spontaneous recanalization has not been fully elucidated, recanalization ensuing from complete thrombosis of aneurysms has been reported in many studies. 4) 5) 11) 12) 16) 19) 21) 22) In these studies, recanalization of acute thrombosis of the aneurysm was observed in the days and weeks after thrombosis. Therefore, follow-up angiogram and careful observation during the follow-up period are required for fear of recanalization resulting in rebleeding of the aneurysm.…”

Section: Discussionmentioning

confidence: 91%

Spontaneous Occluded Anterior Communicating Artery Aneurysm during Coil Embolization Treated with One Coil Insertion into Remaining Stump

Chang

Lee

Shin

et al. 2015

J Cerebrovasc Endovasc Neurosurg

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Spontaneous thrombosis of a ruptured aneurysm during coil embolization is a rare event, and some reports on recanalization of a spontaneous occluded ruptured aneurysm have been published. We report on a case of a 54-year-old male who presented with a subarachnoid hemorrhage due to rupture of a small aneurysm of the anterior communicating artery (ACoA). Cerebral angiography confirmed the presence of the ACoA aneurysm, but, during coil embolization, the aneurysm was near completely occluded with a remaining small neck. A small coil was inserted into the remaining stump of the neck to prevent recanalization, and the angiographic result at 1 year after coil embolization showed complete obliteration of the aneurysm.

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“…Thrombosis and spontaneous disappearance of giant aneurysms are well described [6], unlike small aneurysms for which the occurrence of spontaneous thrombosis is an unusual event [3]. However, this spontaneous thrombosis and disappearance of intracranial aneurysms does not seem to be uncommon in children [7] [8].…”

Section: Existence Of the Phenomenonmentioning

confidence: 99%

Spontaneous Disappearance of a Ruptured Intracranial Aneurysm

Tokpa¹,

Derou²,

Yao³

et al. 2019

OJMN

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The spontaneous disappearance of a ruptured intracranial aneurysm is unusual and its mechanism remains incompletely understood. However, several hypotheses are put forward and are mostly found in Virchow's triad. We report the case of a man who suffered subarachnoid hemorrhage by rupture of a blister aneurysm of the P1 segment of the left posterior cerebral artery. A control arteriography performed one week after the rupture showed a disappearance of the aneurysm and a significant vasospasm of the carrier artery. Angiograms performed at 3 weeks and 3 months confirmed this disappearance of the aneurysm and a return to normal artery size. Clinically the patient was doing well. Therefore his aneurysm was spontaneously declared cured. Several studies are needed to clarify the natural history of spontaneously thrombosed aneurysms and elucidate their occurrence mechanism in order to improve the management of intracranial aneurysmal pathology.

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Acute Disappearance of Ruptured Aneurysm Located Near the Origin of the Superior Cerebellar Artery -Case Report-

Cited by 13 publications

References 18 publications

Recanalization of Completely Thrombosed Non-Giant Saccular Aneurysm Mimicking asDe NovoAneurysm

Recanalization of Completely Thrombosed Non-Giant Saccular Aneurysm Mimicking asDe NovoAneurysm

Spontaneous Occluded Anterior Communicating Artery Aneurysm during Coil Embolization Treated with One Coil Insertion into Remaining Stump

Spontaneous Disappearance of a Ruptured Intracranial Aneurysm

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