Microvascular anastomotic aneurysms are an uncommon complication in reconstructive surgery, which can lead to free flap failure or even threaten the life of the patient. The literature referring to microvascular anastomotic aneurysms was reviewed in order to highlight their clinical presentation, diagnostic work-up, and therapeutic management. Also, a case of ...

Surgical decisions on treatment of cerebral aneurysms are based predominantly on aneurysm size. This study has assessed the influence of parent vessel geometry on intra-aneurysmal flow patterns and mass flow rate using computational fluid dynamics and finite element modeling of straight and curved vessels feeding saccular aneurysms of varying size ...

Aneurysms arising from anterior inferior cerebellar artery-posterior inferior cerebellar artery (AICA-PICA) variant are exceedingly rare. We report two cases of distal AICA-PICA variant aneurysms and discuss their surgical management with emphasis on the higher risk for perforator artery injury. The etiopathogenesis of these rare aneurysms at non-branching sites remains elusive.

OBJECT: The authors report the management and outcomes of 55 patients with 60 intracranial aneurysms arising distal to the major branch points of the circle of Willis and vertebrobasilar system. METHODS: Between July 1997 and December 2006, the authors' neurovascular service treated 2021 intracranial aneurysms in 1850 patients. The database ...

OBJECT:The goal of this study was to establish a biomathematical model to accurately predict the probability of aneurysm rupture. Biomathematical models incorporate various physical and dynamic phenomena that provide insight into why certain aneurysms grow or rupture. Prior studies have demonstrated that regression models may determine which parameters of an ...

A 79-year-old woman who had a previous history of sudden onset of pain and coldness of her right leg was referred to our hospital. There were no palpable right popliteal and pedal pulses with the ankle-brachial pressure index being 0.63. Computed tomography showed a 2.6-cm diameter right buttock mass which ...

Rupture of the free wall of the left ventricle (LV) is a catastrophic complication occurring in 4% of patients after myocardial infarction (MI) and in 23% of those who die of MI. Rarely the rupture is contained by an adherent pericardium creating a pseudo-aneurysm. This clinical finding calls for emergency ...

OBSTRUCTIVE: hydrocephalus due to giant basilar artery (BA) aneurysm is a rare finding, and endoscopic treatment has not been reported. Here the authors present their experience with endoscopic third ventriculostomy (ETV) in obstructive hydrocephalus due to giant BA aneurysm. Between December 2000 and March 2007, 3 patients (2 men and ...

An elderly male was evaluated for subarachnoid hemorrhage and found to have a persistent primitive hypoglossal artery with its associated abnormal posterior fossa circulation and a lower basilar artery aneurysm. Angiography findings are described and are corroborated with computed tomography and magnetic resonance imaging. Its surgical and clinical relevance are ...

The authors report an extremely rare case of a ruptured saccular aneurysm of the right posterior inferior cerebellar artery (PICA) associated with hypoplasia of bilateral internal carotid arteries (ICAs) and the right vertebral artery (VA). The aneurysm was successfully treated by clipping of the aneurysm itself using a lateral suboccipital ...

Coronary aneurysm is rare in SLE and confirmation of etiology is usually made at postmortem examination. We encountered a giant aneurysm with multiple stenotic segments of the coronary arteries in a patient with SLE who had previous history of AAA/TAA. Resection of the aneurysm and coronary artery bypass graft were ...

Human studies of haemodynamic factors in the pathogenesis of cerebral aneurysms require knowledge of the pre-aneurysmal vasculature. This paper presents an objective and automated technique to digitally remove an aneurysm and reconstruct the parent artery, based on lumen geometries segmented from angiographic images. Relying on robust computational geometry concepts, notably ...

PAA is a predominantly male disease, more than 90% of affected patients are men. Risk factors for amputation are poor run-off, use of a synthetic graft, emergency treatment and high age. The frequency of amputation decreased over time in Sweden, which was associated with increased use of preoperative thrombolysis and ...

Aneurysms of lenticulostriate artery (LSA) have rarely been reported. We present an extremely rare case of bilateral aneurysm of LSA, which spontaneously disappeared. A 59-year-old man presented to us with a decreased level of consciousness. Twice repeated blood culture was negative. Computed tomography (CT) showed bilateral basal ganglia hemorrhage with ...

An aneurysm of the middle-colic artery, associated with segmental arterial mediolysis (SAM), is a rare condition. This report describes a case of a middle-colic artery aneurysm that was associated with SAM. A 57-year-old man was admitted to our hospital because of severe abdominal pain. A rupture of a middle-colic artery ...

BACKGROUND: Spontaneous rupture of an ovarian artery aneurysm is an extremely rare and usually life-threatening event, most often associated with pregnancy. CASE: A 46-year-old woman presented to the emergency room with left lower abdominal pain and cold sweating. Contrast-enhanced dynamic computed tomography (CT) showed a left retroperitoneal hematoma with extravasation ...

We report a case of a ruptured isolated true external iliac artery aneurysm (EIAA). A 78-year-old woman was admitted to our institution in a shock state after the sudden onset of severe pain in the right hypogastric region. A pulsating mass was found in her right lower abdomen. Computed tomography ...

ABSTRACT: Traditionally, surgery of the anterior circulation aneurysms of the cerebral vasculature is dictated by the site of the lesion, excluding such midline lesions as anterior communication artery aneurysms. Few reports address the issue of using a single craniotomy to obliterate multiple aneurysms located in both hemispheres. A 51 year-old ...

Celiac artery aneurysms are rare and usually asymptomatic. The management of these aneurysms is challenging, especially when they are large and involve the confluence of the trifurcation. We present here a case of a large celiac artery aneurysm involving its branches in a young woman. Preoperative investigations, intraoperative findings, and ...

With improved angiographic techniques and magnetic resonance angiography available today, an increasing number of incidental aneurysms are being detected. Occurrence of an intracranial aneurysm together with a pituitary adenoma presents tremendous risk to the patient, particularly when the aneurysm lies near the operative field.A 61-year-old woman presented with a progressive ...

BACKGROUND: Abdominal aortic aneurysms (AAA) are local dilatations of the infrarenal aorta. If left untreated they may rupture and lead to death. One form of treatment is the minimally invasive insertion of a stent-graft into the aneurysm. Despite this effective treatment aneurysms may occasionally continue to expand and this may ...

BACKGROUND: Arterial tortuosity syndrome (ATS) (OMIM #208050) is a rare autosomal recessive connective tissue disorder characterized by tortuosity and elongation of the large and medium-sized arteries, propensity to aneurysms formation, vascular dissection, and pulmonary arteries stenosis. ATS is caused by mutations in SLC2A10 gene, encoding for the facilitative glucose transporter ...

Cerebral aneurysms are abnormal widening or ballooning of a localized segment of an intracranial blood vessel. Surgical clipping is an important treatment for aneurysms which attempts to exclude blood from flowing into the aneurysmal segment of the vessel while preserving blood flow in a normal fashion. Improper clip placement may ...

Summary: We describe a patient with a small ruptured azygos anterior cerebral artery aneurysm located at a non-bifurcation distal site on the artery treated successfully with simple coiling.

Summary: Cases of aneurysm associated with the occlusion of both common carotid arteries are very rare.We present a case of ruptured aneurysms of the basilar bifurcation and posterior cerebral artery coexisting with bilateral common carotid artery occlusion, successfully treated by endovascular coil embolization with a double-balloon remodeling technique. Finally, we ...

A case of double origin of the posterior inferior cerebellar artery (PICA) is presented, with appearances on both cross-sectional imaging and conventional angiography. An associated aneurysm was found, strengthening the belief that this variation is associated with intracranial aneurysms. Furthermore, this is the first report of a right-sided double-origin PICA ...

We herein report the first case of progressive perianeurysmal edema preceding the rupture of a small saccular aneurysm, without any intervention or intraluminal thrombosis. A 71-year-old woman was incidentally noted to have a cerebral aneurysm (5mm in diameter) at the lower basilar artery. Twelve months later, magnetic resonance (MR) imaging ...

The angiographic appearance of an intracranial arterial occlusion is typically distinct from that of a saccular aneurysm, with only a few reported cases of occlusion simulating aneurysm. At the same time, a small percentage of symptomatic intracranial aneurysms present with a stroke. Accurate diagnosis of these conditions is crucial, as ...

BACKGROUND AND PURPOSE: Size of an unruptured intracranial aneurysm (UIA) may be an important risk factor for rupture. Accordingly, serial noninvasive imaging is commonly used to assess untreated UIA for enlargement. Few data exist regarding the frequency and predictors of enlargement. We obtained this information from a group of patients ...

This report describes a patient with a rare distal anterior choroidal artery (AChoA) aneurysm that developed a right intracerebral haematoma and intraventricular haemorrhage and was treated by surgical exploration and clipping via a transtemporal/ventricular approach. The patient was discharged neurologically intact. We review the literature related to these rare aneurysms ...

Summary: Typical treatment of intracranial aneurysm includes: surgical clipping, intrasacular packing, and parent artery occlusion. The treatment of a fusiform aneurysm is often parent artery occlusion, and keeping patency of the parent artery is difficult.We report our experience in the treatment of 3 cases of intracranial fusiform aneurysm with stent ...

Elastase-induced aneurysms in rabbits have been proposed as a useful preclinical tool for device development. The object of this study was to report rates of morbidity and mortality associated with the creation and embolization of elastase-induced rabbit aneurysms and to assess the impact of operator experience on these rates. Elastase-induced ...

A rare case of giant coronary artery aneurysm related to an episode of blackout is presented. The aneurysm projected as a para-cardiac mass on the chest X-ray. The echocardiographic, MDCT and coronary angiography appearances of this rare condition are demonstrated, and we discuss the differential diagnoses of right para-cardiac masses.

INTRODUCTION: Aneurysms of the proximal segment of the anterior cerebral artery (A1A) are rare and challenging to treat. No information is available regarding their management by endovascular approach. The aim of this study was to report our experience with endovascular treatment (EVT) of A1As. PATIENTS AND METHODS: A retrospective review ...

OBJECTIVE: Pediatric cerebral aneurysms are rare. There are very few recent studies that focus on the multidisciplinary treatment of ruptured aneurysms. We reviewed our pediatric endovascular and surgical experience with ruptured cerebral aneurysms. METHODS: Pediatric patients aged 16 years and younger who were admitted with a diagnosis of aneurysmal subarachnoid ...

OBJECTIVE: This study examined the growth potential and response to multimodality treatment of partially thrombosed large or giant aneurysms in the posterior circulation. METHODS: The 17 aneurysms arose from nonbranching sites of the vertebral artery (VA) in 6 patients and from branching sites in 11 patients (the VA-posteroinferior cerebellar artery ...

Infected aneurysms are uncommon. The aorta, peripheral arteries, cerebral arteries, and visceral arteries are involved in descending order of frequency. Staphylococcus and Streptococcus species are the most common causative pathogens. Early clinical diagnosis of infected aneurysms is challenging owing to their protean manifestations. Clinically apparent infected aneurysms are often at ...

A 94-year-old monocular woman with a posterior communicating artery aneurysm developed a compressive third nerve palsy with complete blepharoptosis and abduction of her seeing eye. It was believed that she was not a good neurosurgical candidate for aneurysm repair. Her ptosis was managed successfully with an in-office Whitnall sling procedure ...

We describe a case involving a ruptured intradural aneurysm of the meningeal branch of the occipital artery arising from the external carotid artery and connecting with the caudal loop of the posteroinferior cerebellar artery (PICA) by the dural fistula. Angiography of the left external carotid artery showed a saccular aneurysm ...

A rare case of ruptured aneurysm associated with multiple A(1) fenestrations resembling plexiform network was demonstrated by 3D angiography. A 56-year-old female presented with a ruptured aneurysm in the A(2) segment of the left distal anterior cerebral artery associated with the right A(1) fenestration. The ruptured aneurysm was occluded with ...

True venous aneurysms are rare. We report the case of a 70-year-old male with the extremely uncommon finding of an aneurysm of the internal jugular vein. Due to their rarity, no general guidelines for the treatment of these aneurysms have been established. Upon surgical exclusion of the aneurysm, a progressive ...

Intimomedial degeneration is a rare and poorly understood vascular disorder involving the circumferential deposition of large amounts of mucoid material within the intima and media of the arterial wall, causing weakening that results in aneurysm formation of the involved segment. The cause of the disease is unknown at this time. ...

Celiac artery aneurysms are rare but potentially fatal because of the risk of rupture. Atherosclerosis and fibrous dysplasia are the two most common etiologies. Median arcuate ligament compression of the celiac artery is common but usually asymptomatic. We report three cases of post-stenotic celiac artery aneurysm with median arcuate ligament ...

Upper extremity peripheral artery aneurysms are a rarely encountered arterial disorder. Brachial artery aneurysms seen in the pediatric age group are generally trauma resultant. A nine-month-old male infant patient presented with complaints of an asymptomatic mass in the arm. Following Doppler ultrasonography and magnetic resonance imaging (MRI) examinations, saccular aneurysm, ...

The purpose of this study is to examine and compare the hemodynamic characteristics of small aneurysms at the same anatomical location. Six internal carotid artery-ophthalmic artery aneurysms smaller than 10 mm were selected. Image-based computational fluid dynamics (CFD) techniques were used to simulate aneurysm hemodynamics. Flow velocity and wall shear ...

Backgrounds and Purpose- The authors evaluated the incidence of rupture of unruptured intracranial saccular aneurysm during observation. METHODS: Between January 2003 and December 2006, a total of 419 patients with 529 unruptured intracranial saccular aneurysms were observed without treatment. The mean follow-up duration was 905.3 days. Aneurysm size was measured ...

There have been numerous follow-up studies of patients who had ruptured or unruptured intracranial aneurysms treated by wrapping technique using various materials have been reported. Our objective was to ascertain whether our particular wrapping technique using the temporalis muscle provides protection from rebleeding and any aneurysm configuration changes in follow-up ...

INTRODUCTION: The distal segment of the PICA (posterior inferior cerebellar artery) is a very rare localization for the occurrence of intracranial aneurysms. They are almost always presented with SAH (subarachnoid hemorrhage). Hydrocephalus often develops following intraventricular hemorrhage (IVH). The distal PICA segment is a quite difficult localization for neurosurgical procedures. ...

OBJECTIVE: To describe a novel double-balloon trapping technique for endovascular embolization of a broad-based saccular aneurysm of the superior cerebellar artery. CLINICAL PRESENTATION: A 62-year-old man with a history of diabetes, coronary artery disease, and smoking presented with a syncopal episode. Catheter angiography revealed a large (11.7 x 9.4 x ...

OBJECTIVE: Blister-like aneurysms are small hemispherical bulges that usually originate from the anteromedial wall of the distal internal carotid artery and cause significant subarachnoid hemorrhage. It is very important to recognize this novel lesion as a different type of aneurysm than ordinary berry aneurysms. CASE DESCRIPTION: We report the case ...