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J Vasc Interv Radiol. 1994 Jul-Aug;5(4):587-91.

Elective embolization for prevention of hemorrhage from renal angiomyolipomas.

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  • 1Division of Interventional Radiology, Hospital of the University of Pennsylvania, Philadelphia 19104.

Abstract

PURPOSE:

Among angiomyolipomas 4 cm or larger, 82%-94% are symptomatic and 50%-60% bleed spontaneously. Up to one-third of patients with these lesions present in shock. The effectiveness of elective embolization was evaluated in the prevention of bleeding from large (> or = 4 cm) angiomyolipomas while sparing the normal renal parenchyma.

PATIENTS AND METHODS:

Five cases from the authors' institution and 21 cases from the literature were reviewed retrospectively.

RESULTS:

Embolization as the sole means of treatment was effective in 90% of patients over a follow-up period from 2 months to 7 years (mean, 21 months). There were no complications at the authors' institution. Serious procedure-related complications reported in the literature were limited to two cases of aneurysm rupture and two necrotic tumors requiring percutaneous drainage.

CONCLUSION:

Embolization of renal angiomyolipomas is safe and well tolerated and may be of benefit in preventing life-threatening hemorrhage.

PMID:
7949715
[PubMed - indexed for MEDLINE]
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