RESUMO
An example of a large, jejunal branch aneurysm is presented along with a review of 39 other cases of superior mesenteric artery branch aneurysms. current theories of etiology, including atherosclerosis, arterial dysplasia, necrotizing arteritis, and infections, are discussed. Common modes of presentation-pain, intraabdominal hemorrhage, and gastrointestinal bleeding-are reviewed. Emphasis is placed on the role of arteriography in diagnosis and management of branch aneurysms.
Assuntos
Aneurisma/cirurgia , Jejuno/irrigação sanguínea , Artérias Mesentéricas/cirurgia , Idoso , Aneurisma/diagnóstico , Aneurisma/etiologia , Arteriosclerose/complicações , Feminino , Humanos , Artérias Mesentéricas/diagnóstico por imagem , RadiografiaRESUMO
A patient with severe bleeding due to carcinoma of the pharynx, uncontrollable by surgical intervention, was successfully treated by bilateral transcatheter embolization of the external carotid arteries using gel-foam. Although these lesions may appear hypovascular angiographically, this does not preclude embolization as a valuable therapeutic technique. Our experience with this patient indicates that transcatheter embolization is an especially appropriate approach to controlling bleeding in patients with extensive malignant disease when no other therapy is available.
Assuntos
Carcinoma/complicações , Embolização Terapêutica , Hemorragia/terapia , Neoplasias Faríngeas/complicações , Idoso , Artéria Carótida Externa , Esponja de Gelatina Absorvível , Hemorragia/etiologia , Humanos , MasculinoRESUMO
A prospective study in 47 patients was undertaken to determine which of the two major sites for injection of contrast material, superior vena cava or antecubital vein, produces digital subtraction images of higher quality. Both injection sites were used to obtain images of the carotid and aortic arch areas in each patient. The two injection sites were also compared for ease of performance of the study, patient acceptance, and incidence of complications and motion artifacts. It was determined that the degree of vessel conspicuity is not affected by injection site when equal volumes of contrast material are injected. No significant differences in overall image quality attributable to injection site were found, except for carotid images obtained in the anteroposterior projection; for these images, the antecubital vein injection site produced significantly better images. Vessel conspicuity was not the major determinant of overall image quality as judged by radiologists.