Superselective segmental renal arterial embolization for angiomyolipoma with rupture

Objective: To study the clinical value of superselective segmental arterial embolization (SSAE)for renal angiomyolipoma (RAML) with rupture bleeding. Methods: From Jan. 2001 to Jan. 2008, 16 cases of RAML with rupture and bleeding underwent SSAE were analyzed retrospectively. Among them, the embolus contained a mixture of absolute alcohol and lipidol in 8 cases, and an emulsion of pingyangmycin and lipidol in 8 cases. Two cases with complication of aneurysms were embolized by microcoil. Results: Twent three SSAEs were performed in 16 cases, including 8 cases of emergency. After the procedure, renal function was normal and no complications occurred. During follow-up from 4 months to 60 months, hematomas were completely absorbed. Two massive tumors occurred with secondary hematomas due to rupture 3 years after the first embolization, and cared by partial nephrectomy after second SSAE. The average tumor sizes decreased from 596.5 cm3 to 48.4 cm3. Conclusion: SSAE is a safe and effective method for RAML with rupture and bleeding. (authors)