OBJETIVO: Relacionar a influência dos dois tipos de anastomoses arteriais empregadas (término-terminal e término-lateral), da idade do receptor, do rim de doador vivo ou cadáver e do uso de remendo aórtico ("patch") quanto à presença ou não de estenose da artéria renal e, avaliar o tratamento destas estenoses. MÉTODO: Estudo retrospectivo de 278 pacientes submetidos a transplante renal no Hospital Universitário Clementino Fraga Filho (HUCFF), de maio de 1989 a maio de 2001. RESULTADOS: Não se mostrou relação entre as variáveis estudadas com a presença ou não de estenose da artéria renal. A estenose da artéria renal foi detectada em oito casos, que foram tratados, com sucesso, mediante angioplastia transluminal percutânea (ATP), com implante primário de "stent" (n = 7) ou sem implante de "stent" (n = 1). CONCLUSÕES: As variáveis estudadas não influenciaram no aparecimento da estenose da artéria renal e o tratamento endovascular foi efetivo na correção destas lesões estenóticas.

BACKGROUND: Our goal is to relate the type of anastomosis (end-to-end or end-to-side), the age of recipient patient, the type of renal graft used (live or cadaver donor) and the aortic patch usage to the development of renal artery stenosis, evaluating its treatment. Data were statistically analyzed using Fischer's Test. METHODS: This is a retrospective study of 278 patients, submitted to renal implant surgery at the Clementino Fraga Filho University Hospital, from May, 1989 to May, 2001. RESULTS: There was no demonstrable relation between the studied variables and the presence of stenosis. Renal artery stenosis was detected in eight cases, which were successfully treated through percutaneous transluminal angioplasty, with primary stent implant (n = 7) or without stent implant (n = 1). CONCLUSION: The analyzed variables didn't influence the development of renal artery stenosis. Endovascular treatment was effective for this pathology.

OBJETIVO: Avaliar as características e os efeitos de um agente embólico, disponível comercialmente, consistindo de Polivinil Álcool (PVA) de morfologia flocular, e comparar com um agente esférico, de tecnologia nacional, consistindo de Polivinil Álcool e Polivinil Acetato (PVA + PVAc). MÉTODO: Foram utilizadas fêmeas de coelho albino "New Zealand", submetidas à embolização arterial renal. PVA-flocular foi usado em 24 animais, assim como PVA+PVAc-esférico. Seis animais foram utilizados como controle. Todos foram mantidos em cativeiro até a morte, por períodos pós-operatórios de 48 horas, cinco dias, 10 dias e 30 dias. RESULTADOS: Ambos os agentes promoveram oclusão do vaso e infarto do órgão. O estudo microscópico inicial das artérias embolizadas com PVA-flocular, mostra oclusão com trombo e PVA. Os vasos embolizados com PVA+PVAc-esférico, mostram os agentes ocupando praticamente todo o lúmen. No estudo de 30 dias, observa-se absorção do trombo e retração dos agentes de PVAflocular, criando espaços. E com PVA+PVAc-esférico, pode-se observar os agentes circundados por intensa fibrose. CONCLUSÕES: Ambas as partículas foram efetivas para causar isquemia tecidual. A reação inflamatória foi mais intensa com PVA+PVAc-esférico que também apresentou grau de penetração maior no sistema vascular.

BACKGROUND: To evaluate the characteristics and the effects of an embolic agent, available commercially, consisting of irregular - Polyvinyl Alcohol (PVA), and to compare with a spherical agent, of brazilian technology, consisting of Polyvinyl Alcohol and Polyvinyl Acetate (PVA + PVAc). METHODS: Renal arterial embolization was performed in females of New Zealand White rabbits. Irregular - PVA was used in 24 animals. Spherical - PVA+PVAc was used in 24 animals. Six animals were used as control. All animals were maintained in captivity until the euthanasia, after 48 hours, 5 days, 10 days and 30 days. RESULTS: Both agents resulted in vessel occlusion and organ infarction. The initial macroscopic study of the arteries embolized with irregular-PVA, the occluding plug consisted of thrombus and PVA. In vessels embolized with spherical-PVA+PVAc, the occluding plug consisted mostly of the embolic agent. After 30 days, there is absorption of the thrombus and retraction of the agents of PVA-irregular, creating spaces. With spherical-PVA+PVAc, it can be observed the agents surrounded by intense fibrosis. CONCLUSION: Both particles were effective to cause tissue ischemia. The inflammatory reaction was more intense with spherical-PVA+PVAc, besides presenting larger degree of penetration in the vascular system.

Abdominal aortic aneurysm reconstruction is usually performed in vascular surgical practice. However, the repair of an abdominal aortic aneurysm associated with a pelvic kidney is rare. Our goal is to present a case report of an abdominal aortic aneurysm associated with two congenital pelvic kidneys wich was treated successfully by aneurysmectomy and inclusion of an aortoaortic graft.

Endovascular techniques have been used to treat arterial stenosis throughout the vascular system. The goal of this work is to report one case of percutaneous transluminal angioplasty with primary stenting of the ostial segment of the superior mesenteric artery for treatment of chronic mesenteric ischemia.

Videolaparoscopy has been widely used in the treatment of pathologies as cholelithiasis, appendicitis and adrenal tumor. Nowadays, has also been used to treat type II endoleaks after endovascular repair of abdominal aortic aneurysms. The goal of this work is to report one case of inferior mesenteric artery endoleak treated by videolaparoscopy.