1/41. subarachnoid hemorrhage due to septic embolic infarction in infective endocarditis.During antibiotic therapy, a 56-year-old man with a streptococcus bovis endocarditis developed an infarction of the right middle cerebral artery (MCA). Thirty hours after stroke onset, cranial computed tomography controls demonstrated a secondary subarachnoid hemorrhage, marked in the cistern of the right MCA. The latent period, cerebrospinal fluid analysis, angiographic and pathologic findings favor the assumption of a pyogenic arterial wall necrosis of the MCA due to a septic embolus. This pathomechanism of intracranial hemorrhage in infective endocarditis should be distinguished from a rupture of a mycotic aneurysm.- - - - - - - - - - ranking = 1keywords = subarachnoid (Clic here for more details about this article) |
2/41. Massive haemorrhagic transformation in cardioembolic stroke: the role of arterial wall trauma and dissection.The pathogenesis of massive haemorrhagic transformation is not well established. Fatal haemorrhagic transformation associated with in situ dissection after acute middle cerebral artery (MCA) occlusion in a patient with atrial fibrillation is reported. An 80 year old woman with atrial fibrillation developed mild hemiparesis and aphasia. brain CT and MRI at 4 and 5 hours, respectively, of symptom onset showed proximal MCA trunk occlusion with developing striatocapsular infarct and hypoperfusion in the superficial MCA territory. A few hours later, she developed massive bleeding into the ischaemic area and died. Pathological examination showed MCA trunk dissection, surrounded by a subarachnoid clot which communicated with the cerebral haematoma. It is suggested that direct arterial wall trauma as a result of cardioembolic MCA occlusion caused bleeding into the infarct. Secondary in situ dissection may be an overlooked mechanism of haemorrhagic transformation.- - - - - - - - - - ranking = 1keywords = subarachnoid (Clic here for more details about this article) |
3/41. Thrombosed aneurysm of the middle cerebral artery with occlusion of the distal parent artery--case report.A 54-year-old female presented with subarachnoid hemorrhage due to rupture of a small middle cerebral artery aneurysm, found to be thrombosed at surgery and not visualized on the preoperative angiograms. One major branch of the middle cerebral artery was found to be occluded near the trifurcation. The lumen of the branch proximal to the occlusion had appeared as the aneurysmal opacification on the preoperative angiograms.- - - - - - - - - - ranking = 1keywords = subarachnoid (Clic here for more details about this article) |
4/41. A partially thrombosed, fenestrated basilar artery mimicking an aneurysm of the vertebrobasilar junction: case report.We report a patient with a subarachnoid hemorrhage in whom a partially thrombosed, fenestrated basilar artery mimicked an aneurysm of the vertebrobasilar junction on preoperative angiography. Intraoperatively, no aneurysm was detected; instead, the patient was found to have partial thrombosis of one limb of the fenestrated basilar artery. The nodular appearance of the residual lumen of the vessel corresponded exactly to the angiographic findings. To our knowledge, no similar case has been reported.- - - - - - - - - - ranking = 1keywords = subarachnoid (Clic here for more details about this article) |
5/41. Spontaneous disappearance of a huge cerebral arteriovenous malformation: case report.A case of spontaneous disappearance of a cerebral arteriovenous malformation (AVM) is reported. A 59-year-old woman, who had been diagnosed as having a huge AVM in the left occipital lobe 6 years before and who was monitored without treatment, complained of a sudden headache and vomiting. Computed tomography revealed an acute subdural hematoma, intracerebral hematoma, and subarachnoid hemorrhage, for which a craniotomy was performed. Cerebral angiograms performed 9 days after the operation demonstrated a decrease in the size of the AVM. Repeated cerebral angiograms performed a month later demonstrated complete disappearance of the AVM. Follow-up angiograms performed 19 months after hemorrhage confirmed complete disappearance of the AVM. Spontaneous disappearance is known to occur occasionally in small AVMs but rarely in huge ones such as the one presented here. Several possible mechanisms for spontaneous disappearance of AVMs are discussed.- - - - - - - - - - ranking = 1keywords = subarachnoid (Clic here for more details about this article) |
6/41. Disappearance of a cerebral aneurysm--an unusual angiographic event.Spontaneous thrombosis of cerebral aneurysms demonstrated by angiography is infrequent. This article describes angiographically documented spontaneous thrombosis of an intracranial aneurysm at the posterior cerebral-posterior communicating artery junction in a 40-year-old woman. The initial angiogram done on 16th day after an episode of subarachnoid haemorrhage showed a medium sized aneurysm. Subsequent angiograms done on 30th, 40th and 60th day failed to demonstrate the aneurysm. The factors leading to this rare event remain obscure.- - - - - - - - - - ranking = 5.6467106204554keywords = subarachnoid haemorrhage, subarachnoid, haemorrhage (Clic here for more details about this article) |
7/41. Spontaneous thrombosis of an aneurysm of the middle cerebral artery with subarachnoid haemorrhage in a 6-year-old child: case report.A 6-year-old boy had a sudden onset of rupture of an aneurysm of the middle cerebral artery. Narrowing of an artery proximal to the aneurysm was shown on an angiogram taken two days after the rupture. At operation, clipping of the aneurysm prevented further bleeding. This artery thrombosed spontaneously in the postoperative period. The outcome was favourable, and the patient returned to school life. Spontaneous thrombosis of an artery after subarachnoid haemorrhage in children is rare, and thrombosis of aneurysm is very rare. To our knowledge, this is the third reported case of spontaneous thrombosis of a cerebral saccular aneurysm with subarachnoid haemorrhage.- - - - - - - - - - ranking = 33.880263722732keywords = subarachnoid haemorrhage, subarachnoid, haemorrhage (Clic here for more details about this article) |
8/41. Complementary values of static and dynamic scintigraphy, computerized tomography and angiography in the diagnosis of a partially thrombosed giant intracranial aneurysm.The case history is presented of a 17 year-old male admitted with right hemiplegia and motor aphasia. Static and dynamic scintigraphy allowed prediction of a giant aneurysm in the deep left frontotemporal region, and this supposition was confirmed by CT and carotid angiography. CT also revealed the aneurysm to extend farther medially than the other two examinations had indicated, the medial portion of the aneurysm being thrombosed. Evaluation of the diagnostic information obtained from the three procedures, combined with the clinical data, makes possible a reconstruction of the probable course of events. The presenting signs were probably caused by a newly formed thrombus within the aneurysm. death, which occurred after five days, was apparently due to subarachnoid hemorrhage.- - - - - - - - - - ranking = 1keywords = subarachnoid (Clic here for more details about this article) |
9/41. Vein of Galen aneurysm presenting with recurrent aseptic meningitis and subsequent spontaneous thrombosis.Clinical and laboratory findings are described in the case of a patient with a vein of Galen aneurysm who presented with recurrent aseptic meningitis for which no etiology could be identified. The patient subsequently developed thalamic and intraventricular hemorrhage associated with partial thrombosis of the dilated vein of Galen. review of the literature revealed no previously reported association of these conditions. Recurrent cerebral venous thrombosis involving the fistula is hypothesized as the cause of repeated inflammatory reactions near the subarachnoid space. More extensive thrombosis may then have precipitated the hemorrhage.- - - - - - - - - - ranking = 1keywords = subarachnoid (Clic here for more details about this article) |
10/41. Putaminal haemorrhage after recanalization of an embolic MCA occlusion treated with tissue plasminogen activator.We present the case of a 42-year-old female, who suffered an embolic occlusion of the right middle cerebral artery (MCA). Recanalization was achieved with tissue plasminogen activator (t-PA) within 7 h after onset of stroke. Post-t-PA infusion angiographic and CT examinations revealed fragmentation of the thrombus and a small putaminal haemorrhage associated with early reperfusion of the MCA. No clinical deterioration was observed and complete recovery occurred within 10 days.- - - - - - - - - - ranking = 2.9633099488452keywords = haemorrhage (Clic here for more details about this article) |
| | Next -> |