BACKGROUND Midaortic syndrome (MAS) is a rare vascular anomaly characterized by segmental narrowing of the distal descending thoracic or abdominal aorta. Renal or visceral arteries may also be affected to varying degrees. MAS is often associated with renovascular hypertension, and requires early intervention. When medical therapy and percutaneous interventions fail to control hypertension, surg...

The role of nitric oxide (NO) and prostaglandins (PG) in modifying renal hemodynamics was examined in clipped and nonclipped kidneys of unilateral renal artery stenosis. Chronic unilateral renal ischemia was established by 4-wk-clipping the left renal artery of canine kidneys, and renal interstitial nitrate+nitrite and PGE(2) contents were evaluated by the microdialysis technique. Unilateral re...

BACKGROUND Renal artery revascularisation procedures are usually carried out on children with renal artery stenosis from varied causes, including Takayasu's arteritis. Reports on the outcome of such procedures in children usually refer to the improvement in blood pressure, with only minimal mention of effects on renal function. OBJECTIVE Salvageability of renal function in children who underw...

OBJECTIVE To present a case of a rare variation of the renal artery and multiple (7) renal arteries by multidetector computed tomography (MDCT) angiography. CLINICAL PRESENTATION AND INTERVENTION A 36-year-old male patient was admitted to our hospital as a potential living donor for renal transplantation. An MDCT angiography was performed using a 16-detector row CT scanner to obtain a detaile...

Atherosclerotic renal artery stenosis (RAS) usually involves the ostium and the proximal one-third of the renal artery main branch. Percutaneous renal artery angioplasty with stent placement is a well recognized treatment for atherosclerotic RAS. Occasionally, atherosclerotic RAS involves renal artery bifurcations. However, stent implantation in atherosclerotic RAS involving bifurcation is not ...

Introduction Multiple renal arteries are unilateral in approximately 30% of patients and bilateral in approximately 10% [1, 2]. Aberrant arteries usually arise from the aorta or iliac arteries anywhere from the level of T11 to the level of L4. In rare cases, they can arise from the lower thoracic aorta or from lumbar or mesenteric arteries [1]. Aberrant renal artery originating from aortic bifu...

Traditionally, anatomy textbooks describe each kidney to receive irrigation from a single renal artery. However, current literature reports great variability in renal blood supply, the number of renal arteries and the arrangement of hilar structures on the left side. Here a case is described where, on the right side, the renal artery had its origin from the abdominal aorta, as normally occurs, ...

OBJECTIVE To investigate the prevalence and distribution of renal arteries and their branches in vivo, correlating the particularities found in them with sex and laterality. METHODS Two hundred renal pedicles were studied by CT angiography and its arteries analyzed according to number, position of origin, size, length and trajectory in relation to renal segments. Its frequency and laterality ...

OBJECTIVE To familiarize practitioners with different sonographic manifestations of renal artery compromise and the sonographic techniques for renal artery imaging. METHODS Approximately 1500 examinations evaluating for renal artery disease are performed in our vascular laboratory every year. Most of the patients have the symptoms of hypertension (possibly related to renovascular etiology) an...

A 43-year-old champion New Zealand athlete presented acutely with the onset of right flank pain. He gave a previous history of ‘exercise-induced’ arrhythmia and vertebral degeneration, which were attributed to a lifetime of sporting activity. Only the day before, he had competed in a gruelling triathlon race consisting of a 11.5 km swim, a 25 km cycle and a 10 km run in summer temperatures reac...