The purpose of this study is to report a case of infra-renal aorta agenesis with emphasis on the MR angiography (MRA) findings. A 66-year-old woman presented with urinary complaints. Pelvic and abdominal ultrasound showed hydronephrosis secondary to ureteral lithiasis; the distal portion of the abdominal aorta was not identified. Abdominal CT showed that the infra-renal portion of the abdominal aorta was apparently absent. MRI and MRA demonstrated that, after the origin of the renal arteries, the abdominal aorta spontaneously terminated in two lumbar hypertrophic arteries. In addition, MRA showed a dilated superior mesenteric artery that formed a vascular loop, which continued posterior and inferiorly towards the posterior pelvic region. In this region, it bifurcated and formed internal iliac branches, which were responsible for the arterial supply of the pelvis. In conclusion, MRA allows for precise evaluation of patients with infra-renal abdominal aorta agenesis. Although it is a rare entity, radiologists should be able to recognize it in ultrasound, CT and MRI studies.
RESUMOIntrodução: a estenose de artéria renal transplantada (EART) é a complicação vascular mais frequente do transplante renal. O Objetivo: avaliar o sucesso clínico, a patência primária e secundária da ATP, bem como a sobrevida dos pacientes após o tratamento endovascular. Métodos: análise retrospectiva dos pacientes com EART tratados por ATP no período de janeiro de 2008 a dezembro de 2016 no Hospital Universitário Walter Cantídio. Resultados: 28 pacientes foram tratados por EART através do método endovascular. A pressão diastólica reduziu de 91,62 mmHg para 76 mmHg, em média, após 6 meses do tratamento (p<0,05). Observou-se uma redução nos níveis de creatinina após 3, 6 e 24 meses da angioplastia (p=0,005). As taxas de patência primária em 1, 3, 6, 12 e 24 meses foram de 89,3% +/-5,8%, 85,6% +/-6,7%, 81,8% +/-7,4%, 78,1% +/-7,9% e 68,9% +/-9,3%, respectivamente. A taxa de patência secundária foi de 100%. A taxa de sobrevida em 1, 3, 6, 12 e 24 meses foi de 96,4% +/-3,5%, 96,4% +/-3,5%, 92,6% +/-5,1%, 92,6% +/-5,1% e 83,8% +/-7,5%, respectivamente. Conclusão: o tratamento endovascular de EART apresenta boas taxas de patências primária e secundária e é efetivo em restaurar e manter a função renal em dois anos.Palavras-chave: Transplante de rim. Obstrução da artéria renal. Angioplastia. Sobrevida. ABSTRACTIntroduction: Transplant renal artery stenosis (TRAS) is the most frequent vascular complication of renal transplantation. The diagnosis is made through arteriography and the treatment consists of percutaneous transluminal angioplasty (PTA). Objective: to evaluate the clinical success, the primary and secondary patency of PTA, as well as the survival of patients after endovascular treatment. Methods: Retrospective analysis of patients with TRAS treated by PTA from January 2008 to December 2016 at Hospital Universitário Walter Cantídio. Results: 28 patients were treated by TRAS using the endovascular method. Diastolic pressure decreased from 91.62 mmHg to 76 mmHg, on average, after 6 months of treatment (p <0.05). There was a decrease in creatinine levels after 3, 6 and 24 months of angioplasty (p = 0.005). The primary patency rates at 1, 3, 6, 12 and 24 months were 89.3% +/-5.8%, 85.6% +/-6.7%, 81.8% +/-7 , 4%, 78.1% +/-7.9% and 68.9% +/-9.3%, respectively. The secondary patency rate was 100%. The survival rate at 1, 3, 6, 12 and 24 months was 96.4% +/-3.5%, 96.4% +/-3.5%, 92.6% +/-5, 1%, 92.6% +/-5.1% and 83.8% +/-7.5%, respectively. Conclusion: Endovascular treatment of TRAS presents good rates of primary and secondary patency and is effective in restoring and maintaining renal function in two years.
O crescente número de procedimentos endovasculares realizados mundialmente fez com que seja mais notável a incidência de complicações iatrogênicas decorrentes de punções arteriais, com taxas desses eventos variando de 0,5 a 11%. Abordagens convencionais com compressão local, uso de dispositivos de fechamento de punção, são utilizadas com frequência, mas alguns casos mais complexos requerem abordagem cirúrgica. Técnicas endovasculares mostram-se como alternativas cada vez mais descritas para reparo cirúrgico destas complicações por sua eficácia, segurança e menor morbidade. Nesse relato ilustramos casos de dois pacientes portadores de hematomas expansivos pós-punção arterial nos quais foi empregada, com sucesso, técnica de insuflação de cateter-balão para hemostasia endovascular dos pontos de hemorragia arterial. Esta abordagem foi satisfatória, com resolução da complicação vascular e evitando maior morbidade.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.