Vascular complications after kidney transplantation have been described and pseudoaneurysms represent a well-recognized vascular complication. Although the incidence of pseudoaneurysm is low, it may potentially cause graft loss or may even be fatal for the patients if it is not diagnosed and treated quickly. The authors report a case of renal artery pseudoaneurysm diagnosed two months posttransplantation with cadaveric graft, the treatment and literature data.

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.

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.

Diversos fatores têm sido associados ao desenvolvimento de edema peritumoral nos meningiomas. Foram estudados os aspectos radiológicos e anátomo-patológicos de 51 meningiomas intracranianos operados no Hospital Universitário Clementino Fraga Filho (HUCFF). Dois terços dos meningiomas apresentavam edema perilesional. O tamanho dos meningiomas correlacionou-se com a presença de edema, sendo mais frequente nos meningiomas grandes (>4cm). A localização parece, também, influenciar no desenvolvimento do edema peritumoral, sendo mais acentuado nos meningiomas da asa do esfenóide e incomum nos meningiomas do tubérculo selar. Os subtipos histológicos de meningioma não se correlacionaram com a intensidade do edema peritumoral. Dos diversos mediadores químicos descritos na literatura recente relacionados ao desenvolvimento de edema peritumoral em tumores intracranianos, destaca-se o fator de crescimento do endotélio vascular (VEGF). A expressão nos meningiomas do VEGF e de seu receptor flk-1 foi estudada com técnica imuno-histoquímica, demonstrando a sua expressão nas células tumorais.

Many factors have been associated to the development of peritumoral edema in meningiomas. We studied the radiological and pathological features of 51 intracranial meningiomas surgically treated in the University Hospital of the Federal University of Rio de Janeiro. Two thirds of the meningiomas in our series had peritumoral edema. The size of the meningioma was probably related to the development of edema. Peritumoral edema was found frequently in the large meningiomas. The location of the meningioma was also associated with the frequency of peritumoral edema. Sphenoid wing meningiomas had significantly more peritumoral edema. In contrast, tuberculum sellae meningiomas were almost never associated with cerebral edema. There is growing evidence in the literature that vascular endothelial growth factor (VEGF) is a key factor in the pathogenesis of peritumoral edema. We studied by immunohistochemical techniques the expression of VEGF and its receptor flk-1 in meningiomas.