Current management strategies of renal angiomyolipomas (AMLs) include observation, embolization and partial or total nephrectomy. Selective arterial embolization is an effective and safe treatment of large angiomyolipomas with low complication rates. Percutaneous drainage was the recommended treatment for renal abscess formation following the embolization. Herein we describe two cases which we performed percutaneous drainage of the liquefaction of entire tumors after embolization. Open surgery was needed for one of the patients who showed recurrence after percutaneous drainage and alcohol irrigation of the cavity, whereas percutaneous drainage was the sufficient treatment for the other patient as recommended.
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