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Case Reports
. 2018 Apr 27;8(1):82-89.
doi: 10.1159/000489088. eCollection 2018 Jan-Apr.

Transcatheter Arterial Embolization Therapy for Huge Renal Cysts: Two Case Reports

Naoya Toriu  1 , Junichi Hoshino  1 , Saeko Kobori  1 , Sun Watanabe  1 , Masahiko Oguro  1 , Yoichi Oshima  1 , Rikako Hiramatsu  1 , Hiroki Mizuno  1 , Daisuke Ikuma  1 , Akinari Sekine  1 , Noriko Hayami  1 , Keiichi Sumida  1 , Masayuki Yamanouchi  1 , Eiko Hasegawa  1 , Naoki Sawa  1 , Kenmei Takaichi  1   2 , Motoko Yanagita  3 , Takuya Fujimaru  4 , Eisei Sohara  4 , Shinichi Uchida  4 , Yoshifumi Ubara  1   2
Affiliations
Case Reports

Transcatheter Arterial Embolization Therapy for Huge Renal Cysts: Two Case Reports

Naoya Toriu et al. Case Rep Nephrol Dial. .

Abstract

We encountered 2 patients with symptomatic huge simple renal cysts. In case 1, 4,000 mL of cyst fluid was drained via a catheter, but intracystic bleeding occurred immediately afterwards. Transcatheter arterial embolization (TAE) was performed, after which the bleeding stopped, and cyst drainage was repeated successfully. After 2 years, the total cyst volume was reduced from 11,775 mL to 75.4 mL. In case 2, TAE was performed prophylactically before drainage. Subsequently, 9,400 mL of fluid was removed from multiple cysts. After 1 year, the total cyst volume was reduced from 9,215 mL to 633 mL without bleeding. Based on these 2 cases, prophylactic TAE before drainage may be useful in patients with huge renal cysts.

Keywords: Cyst drainage; Simple renal cyst; Transcatheter arterial embolization.

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Figures

Fig. 1.
Fig. 1.
Case 1. a Contrast-enhanced CT reveals a huge renal cyst (*) before drainage. b Contrast-enhanced CT shows intracystic bleeding (arrow) after initial drainage of the cyst. c Renal artery angiography displays well-developed feeding arteries supplying the renal cyst (arrows). d Radiograph shows microcoils (arrows) after TAE. e CT reveals involution of the cyst (*) after treatment. CT, computed tomography; TAE, transcatheter arterial embolization.
Fig. 2.
Fig. 2.
Case 2. a Axial contrast-enhanced CT shows 4 huge renal cysts in the left kidney. (*) indicates the largest cyst. b On coronal CT, huge cysts occupy the abdominal cavity. (*) indicates the largest cyst. c Renal artery angiography reveals well-developed feeding arteries supplying the renal cysts (arrows). d Radiograph shows microcoils (arrows) after TAE. e CT displays involution of the largest cyst (*) after treatment. CT, computed tomography; TAE, transcatheter arterial embolization.
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