title: Embolization of symptomatic renal angiomyolipoma with a mixture of lipiodol and PVA, a mid-term result.
abstract: OBJECTIVE
  To evaluate the clinical effect of renal artery embolization with a mixture of lipiodol and polyvinyl alcohol (PVA) particles on symptomatic renal angiomyolipoma and to present the mid-term results from our single-center site.
  
  
  METHODS
  We performed a retrospective review of the seven patients who underwent embolization with a mixture of lipiodol and PVA particles to treat symptomatic renal angiomyolipoma in our center between February 2011 and December 2013. Medical records and follow-up results were reviewed and analyzed.
  
  
  RESULTS
  Seven patients underwent eight episodes of embolization using a mixture of lipiodol and PVA particles to treat symptomatic renal angiomyolipoma. One patient required a subsequent embolization of the right kidney 9 months after the initial embolization of the left kidney. No nephrectomy was required in any of these cases during follow-up. None had recurrence of tumor bleeding or rupture during follow-up. Decreased tumor size was achieved in six patients (85.7%) during the mid-term follow-up.
  
  
  CONCLUSIONS
  Embolization with a mixture of lipiodol and PVA particles is an effective and safe treatment for symptomatic renal angiomyolipoma. Based on the durable mid-term results of the present study, a mixture of lipiodol and PVA particles is recommended for embolization.
authors.affiliation: Department of Interventional Radiology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Huang
authors.affiliation: Department of Interventional Radiology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China.
authors.forename: Ren-You
authors.initials: RY
authors.lastname: Zhai
keywords: Renal angiomyolipoma; embolization; lipiodol; polyvinyl alcohol (PVA)