Rare cause of acute ischemia of the right upper extremity: thrombosis of a retroesophageal subclavian artery.

Thrombosis of a subclavian artery is an uncommon cause of acute upper extremity ischemia in the elderly. Malformations of the aortic arch system are also rare. The purpose of this report is to describe an unusual case involving acute ischemia of the right upper extremity due to extensive thrombosis of a retroesophageal right subclavian artery (RSA) in a 79-year-old woman.

Covered stents in the treatment of peripheral arterial aneurysms: procedural results and midterm follow-up.

Purpose: To evaluate initial and midterm results of percutaneous treatment of peripheral aneurysms using covered stents.

Methods: Between June 1994 and December 1997 we used covered stents (EndoPro System or Passager) on 19 patients with peripheral aneurysms (7 iliac, 5 subclavian, 3 femoral, 3 popliteal, 1 carotid).

Results: Successful aneurysm exclusion was achieved in 18 of 19 patients (95%).

Fibromuscular dysplasia of the renal arteries: comparison of helical CT angiography and arteriography.

Objective: We evaluated the role of helical CT angiography rendering techniques in the assessment of renal artery fibromuscular dysplasia.

Materials And Methods: Twenty hypertensive patients (mean age, 56 years) with angiographically proven renal artery fibromuscular dysplasia were studied by CT angiography. The acquisition protocol was collimation, 3 mm; table speed, 3 mm/sec; and incremental algorithm, one.

[Helical x-ray computed tomography of renal arteries. Apropos of 300 patients].

Purpose: To evaluate the role of helical CT angiography (CTA) in the detection of renal artery stenosis in hypertensive patients.

Materials And Methods: We studied 300 hypertensive patients (50 prospectively and 250 consecutively) with CTA and arteriography (n = 118). Helical acquisition (collimation 3 mm; pitch = 1, 20 seconds acquisition time) was performed 20-45 seconds after contrast injection (300 mgl/ml; 120 ml, 4 ml/sec).

Percutaneous angioplasty of arteriovenous (Brescia-Cimino) fistulae in children.

The development of a stenosis in a Brescia-Cimino fistula is a major clinical problem that threatens vascular access for dialysis. We reviewed the case notes of 46 children undergoing hemodialysis via Brescia-Cimino fistulae. Ten children (mean age 12.