1/185. rupture mechanism of a thrombosed slow-growing giant aneurysm of the vertebral artery--case report.A 76-year-old male developed left hemiparesis in July 1991. The diagnosis was thrombosed giant vertebral artery aneurysm. He showed progressive symptoms and signs of brainstem compression, but refused surgery and was followed up without treatment. He died of rupture of the aneurysm and underwent autopsy in March 1995. Histological examination of the aneurysm revealed fresh clot in the aneurysmal lumen, old thrombus surrounding the aneurysmal lumen, and more recent hemorrhage between the old thrombus and the inner aneurysmal wall. The most important histological feature was the many clefts containing fresh blood clots in the old thrombus near the wall of the distal neck. These clefts were not lined with endothelial cells, and seemed to connect the lumen of the parent artery with the most peripheral fresh hemorrhage. However, the diameter of each of these clefts is apparently not large enough to transmit the blood pressure of the parent artery. Simple dissection of the aneurysmal wall by blood flow in the lumen through many clefts in the old thrombus of the distal neck may be involved in the growth and rupture of thrombosed giant aneurysms of the vertebral artery.- - - - - - - - - - ranking = 1keywords = brain, stem (Clic here for more details about this article) |
2/185. Ruptured aneurysm of the ductus diverticulum into the pulmonary artery in a man: a successful repair.Aneurysm of the ductus diverticulum in the adult is rare and its rupture is fatal. A 75-year-old man presented with congestive heart failure that suddenly occurred with a continuous murmur. angiography showed a left-to-right shunt through a large thrombosed aneurysm of the ductus diverticulum (6 cm), and the pulmonary-to-systemic flow ratio was 2.6. Patch closure of the orifice (3x4 cm) of the aneurysm and repair of the perforated pulmonary artery were done emergently under hypothermic cardiopulmonary bypass with selective cerebral perfusion. He recovered uneventfully. Early recognition and early intervention should be indicated in this otherwise fatal condition.- - - - - - - - - - ranking = 0.053360684347682keywords = stem (Clic here for more details about this article) |
3/185. Intra-arterial infusion of fasudil hydrochloride for treating vasospasm following subarachnoid haemorrhage.In this pilot study we treated cerebral vasospasm in patients with subarachnoid haemorrhage to assess intra-arterial fasudil hydrochloride. We analysed effects of intra-arterial infusion on angiographically evident cerebral vasospasm in 10 patients including 3 with symptoms of vasospasm. Over 10 to 30 min 15 to 60 mg was administered via the proximal internal carotid artery or vertebral artery following standard angiography, without superselective techniques. A total of 24 arterial territories (21 internal carotid, 3 vertebral) were treated. Angiographic improvement of vasospasm was demonstrated in 16 arterial territories (local dilation in 2, diffuse dilation in 14) in 9 patients. In 2 symptomatic patients, intra-arterial fasudil hydrochloride was associated with resolution of symptoms without sequelae. In the third symptomatic patient the benefit of fasudil hydrochloride was only temporary, and a large cerebral infarction occurred. All asymptomatic patients showed no progression of angiographic to symptomatic vasospasm after treatment with intra-arterial fasudil hydrochloride. No adverse effect was encountered.- - - - - - - - - - ranking = 16513.385333019keywords = haemorrhage (Clic here for more details about this article) |
4/185. "True" mycotic aneurysm of a renal artery allograft.A 60-year-old white man sustained a rupture of the renal artery 6 weeks after a cadaveric kidney transplantation. The bleeding site was repaired, and culture of the hematoma showed an isolated growth of candida albicans. Blood and urine cultures were negative. Systemic antifungal therapy was initiated. Bleeding from the renal artery recurred, eventually requiring removal of the transplanted kidney. Histopathology of the resected specimen showed budding yeast in the wall of the renal artery, but no evidence of fungal invasion of the kidney. The patient received 6 weeks of amphotericin b therapy and currently remains on hemodialysis therapy.- - - - - - - - - - ranking = 0.053360684347682keywords = stem (Clic here for more details about this article) |
5/185. Abdominal aortic aneurysm rupture in systemic lupus erythematosus.Many cardiovascular complications have been described in systemic lupus erythematosus (SLE), however, aortic involvement is very rare. We are reporting abdominal aortic aneurysm rupture in a 47-year old woman with SLE. The patient was admitted to our hospital with severe abdominal pain. Emergency computed tomography of the abdomen demonstrated ruptured abdominal aortic aneurysm. The restoration of aortic flow with vascular prosthesis was performed in emergency. Postoperative course was uneventful.- - - - - - - - - - ranking = 0.26680342173841keywords = stem (Clic here for more details about this article) |
6/185. hematuria from arteriovesical fistula: unusual presentation of ruptured iliac artery aneurysm.iliac artery aneurysm rupture can be rapidly fatal if not diagnosed immediately. These aneurysms usually present in patients with other aneurysmal diseases of the aortoiliac arterial system. If not diagnosed and surgically repaired, iliac artery aneurysms can proceed to expand and ultimately rupture, usually presenting with back, flank, or abdominal pain and, possibly, signs of systemic shock. We present an unusual case report of a common iliac artery aneurysm rupture presenting as gross hematuria due to an arteriovesical fistula. Only three other cases of arteriovesical fistulae have been reported previously. Unlike the case presented, all three of these cases involved trauma or surgical instrumentation or manipulation of the bladder.- - - - - - - - - - ranking = 0.10672136869536keywords = stem (Clic here for more details about this article) |
7/185. Ruptured distal anterior choroidal artery aneurysm presenting with casting intraventricular haemorrhage.This report describes a rare case of a distal anterior choroidal artery aneurysm which developed intraventricular haemorrhage without subarachnoid haemorrhage as shown on computerized tomographic (CT) scan. A 69-year-old hypertensive man suddenly became unconscious. An emergency CT scan showed a severe intraventricular haemorrhage and a small round low-dense lesion within the haematoma at the right trigone. The haematoma with obstructive hydrocephalus made the lateral ventricles larger on the right than on the left. CT scan could not detect any subarachnoid haemorrhage. Right interal carotid angiography revealed a saccular aneurysm at the plexal point of the right anterior choroidal artery. We approached the aneurysm and the small round lesion through the trigone via a right temporo-occipital corticotomy. We could clip the aneurysmal neck and remove the intraventricular haematoma and the papillary cystic mass (corresponding to the small round lesion on CT scan) totally in one sitting. Histological examination revealed the aneurysm to be a true one and the papillary cystic mass to be a choroid plexus cyst.- - - - - - - - - - ranking = 26421.41653283keywords = haemorrhage (Clic here for more details about this article) |
8/185. Anterior thalamoperforating artery aneurysm associated with internal carotid artery occlusion: case report.OBJECTIVE AND IMPORTANCE: We describe a rare case of a ruptured distal anterior thalamoperforating artery aneurysm associated with right internal carotid artery occlusion. CLINICAL PRESENTATION: A 59-year-old woman experienced sudden occipital headache, vomiting, and subsequent coma as a result of massive intraventricular hemorrhage. An initial angiogram revealed only an occlusion of the right internal carotid artery just distal to the posterior communicating artery. Repeat angiography 1 month later, however, revealed a saccular aneurysm at a distal anterior thalamoperforating artery in addition to the occlusion of the internal carotid artery. INTERVENTION: We approached this aneurysm through the right temporal horn after opening the ambient cistern. The aneurysm, which was located in the brain parenchyma just medial to the temporal horn, was successfully resected. CONCLUSION: This rare aneurysm probably developed as a result of hemodynamic stress on the anterior thalamoperforating artery after occlusion of the internal carotid artery and/or secondary to chronic hypertension.- - - - - - - - - - ranking = 0.94663931565232keywords = brain (Clic here for more details about this article) |
9/185. hepatic artery aneurysm associated with upper gastrointestinal bleeding after intrahepatic artery chemotherapy.We present the course of illness of a 56 year-old patient with acute gastrointestinal bleeding after penetration of an aneurysm of the hepatic artery in the duodenal bulb. A diffuse intrahepatic metastasis of a carcinoid was treated with a loco-regional intraarterial chemotherapy via a catheter system implanted in the gastroduodenal artery. Five months after the catheter implantation melena occurred. The gastrointestinal arterial bleeding from the penetrating aneurysm presented a life-threatening situation. This cause of bleeding could not be brought under control endoscopically. Immediate surgical management became necessary.- - - - - - - - - - ranking = 0.053360684347682keywords = stem (Clic here for more details about this article) |
10/185. Flow dynamics in a lethal anterior communicating artery aneurysm.We describe and analyze the flow dynamics in replicas of a human anterior communicating artery aneurysm. The replicas were placed in a circuit of pulsating non-Newtonian fluid, and flows were adjusted to replicate human physiologic parameters. Individual slipstreams were opacified with isobaric dyes, and images were recorded on film and by CT/MR angiography. When flow in the afferent (internal carotid) and efferent (anterior and middle cerebral) arteries was bilaterally equal, slipstreams rarely entered the aneurysm. When flow in either the afferent or efferent vessels was not symmetrical, however, slipstreams entered the aneurysm neck, impinged upon the aneurysm dome, and swirled within the aneurysm. Unequal flow in carotid or cerebral systems may be necessary to direct pathologic, fluid slipstreams into an aneurysm.- - - - - - - - - - ranking = 0.053360684347682keywords = stem (Clic here for more details about this article) |
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