Renal angiomyolipoma: Selective arterial embolization-effectiveness and changes in angiomyogenic components in long-term follow-up

Young Min Han, Jae Kyu Kim, Byung Suk Roh, Ho Young Song, Jeong Min Lee, Young Hwan Lee, Sang Yong Lee, Gyung Ho Chung, Chong Soo Kim, Myung Hee Sohn, Ki Chul Choi

Research output: Contribution to journalArticle

103 Scopus citations

Abstract

PURPOSE: To evaluate the efficacy of selective arterial embolization in symptomatic renal angiomyolipoma (AML) and the change in angiomyogenic components during long-term follow-up after embolization. MATERIALS AND METHODS: Fourteen adult patients with symptomatic AMLs underwent 16 selective arterial embolizations. The embolic materials used were absolute alcohol with (n = 5) or without (n = 3) iodized oil, Gianturco coils (n = 4), and polyvinyl alcohol foam powder with gelatin sponge (n = 2). Follow-up ultrasonography and computed tomography (CT) were performed in six and 14 patients, respectively. The effectiveness of selective arterial embolization was evaluated on the basis of the area of the angiomyogenic components in the AML on initial and follow-up images and clinical improvement. RESULTS: All patients showed devascularization of the tumor on the postembolization angiograms. In 13 patients, clinical symptoms disappeared. The follow-up period was 7-72 months (mean, 33 months). One patient underwent nephrectomy at 7 months after embolization because of a large cystic lesion found at 1 month. In long-term CT follow-up (≤12 months) in 12 patients, nearly all angiomyogenic components disappeared, but fatty components partially shrank with liquefactive necrosis in tumors. CONCLUSION: Selective arterial embolization is an effective and safe treatment of AML. The angiomyomatous components crucial for the prevention of bleeding were very sensitive to the embolization.

Original languageEnglish (US)
Pages (from-to)65-70
Number of pages6
JournalRadiology
Volume204
Issue number1
DOIs
StatePublished - Jul 1997
Externally publishedYes

Keywords

  • Arteries, therapeutic blockade
  • Kidney, CT
  • Kidney, US
  • Kidney, interventional procedure
  • Kidney, neoplasms
  • Lipoma and lipomatosis

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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    Han, Y. M., Kim, J. K., Roh, B. S., Song, H. Y., Lee, J. M., Lee, Y. H., Lee, S. Y., Chung, G. H., Kim, C. S., Sohn, M. H., & Choi, K. C. (1997). Renal angiomyolipoma: Selective arterial embolization-effectiveness and changes in angiomyogenic components in long-term follow-up. Radiology, 204(1), 65-70. https://doi.org/10.1148/radiology.204.1.9205224