We implanted stents in three patients who had traumatic abdominal aortic dissections, complicated by right limb ischemia in one case. The circulating false channel extended to the left iliac artery in one case and to both iliac arteries in the last case. Diagnosis and radiological follow-up included ultrasound, computed tomography, and arteriography. Two patients were treated with Wallstents, one with a Palmaz stent. The occlusion of the false channel was obtained in all patients without any significant residual stenosis. No early or late complication was noted in any of the patients. The longest follow-up was 2 years. We conclude that stent placement is an efficient method for the treatment of noniatrogenic inframesenteric aortic dissections.

Adult↗

PubMedDate not supplied

Use of a balloon-expandable intravascular graft in the management of type B aortic dissection in an animal model.

PURPOSE: To evaluate obliteration of an experimental aortic dissection with a balloon-expandable intravascular stent. MATERIALS AND METHODS: Fourteen adult dogs were divided into two groups. In group 1 (n = 6), a thoracoabdominal aortic dissection was surgically created to observe the natural course of this lesion. In group 2 (n = 8), a balloon-expandable intraluminal vascular graft was introduced via the femoral artery in a dissected aorta to try to obliterate the dissection. Angiography was performed postoperatively and again 6 weeks later before the aortae were explanted for pathologic evaluation. RESULTS: In group 1, postoperative aortography depicted evidence of aortic dissection in all animals. Autopsy revealed persisting dissection with reentry tear near the celiac axis in five animals. In group 2, placement of a stent at only entry and reentry sites resulted in partial obliteration of the dissection (n = 3). When the entire length of dissected aorta was treated, the dissection was completely obliterated (n = 4). CONCLUSION: An aortic dissection can be obliterated with a balloon-expandable stent if the entire dissected aorta is treated.

Aortic Dissection↗

PubMedDate not supplied

[Pulmonary hemangiopericytoma. Apropos of a case and review of the literature].

Hemangiopericytoma is a rare vascular tumor of pericyte origin and of variable but always preoccupying potential since falling within the category of sarcomas. A thoracic localization is rare and primary pulmonary parenchyma lesions even more so, only 87 cases being reported in the literature. Radiological diagnostic criteria are of weak specificity, diagnosis being provided by thin section CT scan imaging with contrast. The differential diagnosis of these vascular tumors includes arteriovenous fistula, pulmonary varices, other vascular tumors or even organized bronchomucoceles. The value of CT scan puncture is obviously limited. The course is unpredictable since even histopathology findings fail to provide definitive data.

Adult↗

PubMedDate not supplied

[An unusual compartment syndrome].

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Adult↗

PubMedDate not supplied

Results following surgical correction of renovascular hypertension.

During a 12 year period, 110 patients were submitted to surgery for correction of renovascular hypertension. The pathologic process was atherosclerosis in 65, fibrodysplasia in 28, aneurysms in 6 abdominal coarctation in 5, aortoarteritis in 2 and 3 miscellaneous lesions. Operative procedures used on 148 renal arteries have been: nephrectomy (12), reconstructive surgery (133). Among them: endarterectomy (89), aorto-renal grafts (20) venous, dacron or arterial autografts, resection and anastomosis (10), direct reimplantation (8), angioplasty (5), arterial spleno-renal anastomosis (1). Postoperative arteriograms have been obtained in 98% of the patients, 4 occlusions occurred in aorto renal grafts, no thrombosis in endarterectomy. Progression of dysplasia and atherosclerosis was observed in 5 patients. The overall clinical results show: cure 55%, improvement 34% and no change 11%. With a difference between atherosclerosis (45% cured, 40% improved, 15% no change) and fibrodysplasia (63% cured, 29% improved and 8% no change). Several parameters are studied correlated with the surgical result. This series support interest to treat operatively renovascular hypertension: 89% of patients benefited from surgery.

Adolescent↗