Fungal internal carotid artery aneurysms: successful embolization of an Aspergillus-associated case and review.

Background: Fungal aneurysms of the carotid artery are rare. We report here a case of Aspergillus fumigatus invasive sphenoidal sinusitis complicated by carotid artery aneurysms in a severely neutropenic patient who was successfully treated with a combination of antifungal therapy and embolization of all aneurysms.

Methods And Results: Carotid aneurysms were suspected when severe epistaxis occurred during follow-up for sinusitis.

Cardiovascular effects of selected water-miscible solvents for pharmaceutical injections and embolization materials: a comparative hemodynamic study using a sheep model.

Generally, organic water-miscible solvents are used intravascularly (both intravenously and intra-arterially) for preparing two types of formulations, namely, pharmaceutical injections of poorly soluble drugs and precipitating liquid embolic polymeric materials for the minimally invasive treatment of aneurysms, arteriovenous malformations, or tumors, by arterial route. Although several of such solvents have been used in both drug delivery and interventional radiology, their safety profile is a concern. In particular, there is a lack of comparative investigations of their cardiovascular effects when injected intra-arterially.

Arterial distribution of calibrated tris-acryl gelatin and polyvinyl alcohol microspheres in a sheep kidney model.

Objective: The objective of this study was to compare the repartition in the renal arterial vasculature of tris-acryl gelatin microspheres (TGMS) and polyvinyl alcohol microspheres (PVAMS) of 3 calibers (500-700, 700-900, and 900-1200 microm).

Materials And Methods: Twelve kidneys from 6 adult sheep were embolized and histologically analyzed. The number and size of microspheres and vessels were measured, as well as the deformation of TGMS and PVAMS, and the histologic location according to a classification in 5 zones of the kidney.

Partition of calibrated tris-acryl gelatin microspheres in the arterial vasculature of embolized nasopharyngeal angiofibromas and paragangliomas.

Purpose: To determine the location of calibrated tris-acryl gelatin microspheres (TGMs) in the arterial vasculature of nasopharyngeal angiofibromas (NAFs) and paragangliomas (PGs).

Materials And Methods: Forty-nine specimens (25 PGs and 24 NAFs) treated operatively after embolization with TGMs of various sizes (100-300 microm to 900-1200 microm) were stained with hematoxylin and eosin saffron and analyzed at an objective magnification of 10 or 20 with a micrometric eyepiece (magnification, x12.5).

[Treatment by embolization of small uterine myomata].

We examined the effectiveness of uterine artery embolization (UAE) as a primary treatment for small symptomatic myomatas (<50 mm diameter). One hundred patients aged from 29 to 68 years underwent UAE between 01/01/99 and 12/31/2002. Efficacy was judged by physical examination and imaging studies at 6 to 12 months.

Vascular anomalies and the growth of limbs: a review.

Growth of the limb in a child can be impaired, with the coexistence of a vascular malformation. In these vascular bone syndromes, altered growth is manifest as overgrowth or hypotrophy. The vascular malformation is usually complex and gets progressively worse with time.

Location of vessel occlusion of calibrated tris-acryl gelatin microspheres for tumor and arteriovenous malformation embolization.

Purpose: To evaluate (i). the presence and number of calibrated tris-acryl gelatin microspheres (TGMS) in targeted organs after embolization of tumors or arteriovenous malformations (AVMs) and (ii). the possible correlations among the size of TGMS used for embolization, the size of TGMS found in specimens, and the size of the occluded vessels.

Endovascular treatment of basilar tip aneurysms with Guglielmi detachable coils: predictors of immediate and long-term results with multivariate analysis 6-year experience.

Purpose: To analyze anatomic and clinical results and factors predictive of outcome in treatment of basilar tip aneurysms with Guglielmi detachable coils (GDCs).

Materials And Methods: During 6 years, 55 unselected consecutive saccular aneurysms in 53 patients (mean age, 47 years) were treated with GDC occlusion. Forty-one (75%) aneurysms were ruptured (Hunt-Hess and Fisher grades were assigned in patients); 14 (25%), unruptured.

Coil embolization of an aortic arch false aneurysm.

Purpose: To report the endovascular occlusion of an anastomotic false aneurysm of the ascending aorta.

Case Report: A 51-year-old patient developed an anastomotic false aneurysm at the level of the aortic arch after surgical replacement of the aortic root and arch for aortic dissection. The aneurysm expanded after 6 months and because of its saccular shape was treated by selective occlusion with detachable microcoils.

Transcranial approach for venous embolization of dural arteriovenous fistulas.

Object: Transvenous embolization is effective in the treatment of an intracranial dural arteriovenous fistula (DAVF). Access to the fistula via the internal jugular vein (IJV) may be limited by associated dural sinus thrombosis; a transcranial approach has been developed for venous embolization in such a situation. The authors report their experiences with the use of a transcranial approach for venous embolization of DAVFs.

Uterine artery embolization in sheep: comparison of acute effects with polyvinyl alcohol particles and calibrated microspheres.

Purpose: To compare the effects on the myometrium of polyvinyl alcohol (PVA) particles and calibrated microspheres (MS) in embolization of the uterine arteries in sheep.

Materials And Methods: Superselective and bilateral embolization of the uterine arteries was performed with PVA particles and calibrated MS within 24 hours after artificial ovulation in 26 adult nonpregnant sheep. PVA particles of four diameters, 150-250, 250-400, 400-600, and 600-1,000 microm, were compared with calibrated MS of similar diameters, 100-300, 300-500, 500-700, and 700-900 microm, in eight groups of sheep.

Combined central retinal arterial and venous obstruction: emergency ophthalmic arterial fibrinolysis.

Purpose: To investigate the role of urokinase selectively perfused into the ophthalmic artery as an emergency treatment for combined central retinal arterial obstruction (CRAO) and central retinal venous obstruction (CRVO).

Materials And Methods: Over a 6-year period, 11 consecutive patients presented with recent combined CRAO and CRVO (< or =72 hours). Urokinase (300,000 IU) was selectively perfused via the femoral artery into the ophthalmic artery for 40 minutes.

Thromboaspiration in the basilar artery: report of two cases.

Recanalization of the basilar artery is not always achieved with intraarterial fibrinolysis. We report two cases of thromboaspiration in the basilar artery in which recanalization with fibrinolysis was successful. Thromboaspiration requires favorable anatomy and a fresh nonadhesive clot.

Endovascular treatment of cerebral mycotic aneurysms.

Purpose: To evaluate the endovascular treatment (EVT) of mycotic aneurysms (MAs).

Materials And Methods: Clinical and radiologic data of 18 MAs treated with EVT were retrospectively reviewed. There were 14 patients (11 men, three women), ranging in age from 28 to 64 (mean age, 44 years).