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Symptomatic Simple Renal Cyst: Comparison of Continuous Negative-Pressure Catheter Drainage and Single-Session Alcohol Sclerotherapy

Enver Zerem1, Goran Imamovíc2 and Safet Omerovíc3

1 Department of Interventional Sonography, University Medical Center, Trnovac bb, Tuzla, TK 75000, Bosnia and Herzegovina.
2 Department of Dialysis, University Medical Center, Tuzla, Bosnia and Herzegovina.
3 Department of Urology, General Hospital, Mostar, Bosnia and Herzegovina.


Figure 1
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Fig. 1 Graph shows volumes of cysts before and after 24-month treatment in continuous percutaneous catheter drainage (squares) and single-session sclerotherapy (circles) groups. In percutaneous catheter drainage group, median was 266 mL (interquartile range, 129–521 mL) before treatment and 0 mL (interquartile range, 0–25) after treatment. In single-session sclerotherapy group, median was 214 mL (interquartile range, 99–513 mL) before treatment and 18 mL (interquartile range, 0–47 mL) after treatment (p < 0.0001, Wilcoxon's test).

 

Figure 2
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Fig. 2A Probability of disappearance of cysts. Graph shows disappearance probability of all cysts in continuous percutaneous catheter drainage (dashed line) and single-session sclerotherapy (solid line) groups. There were 24 and 13 disappearance events, respectively (p = 0.026, log-rank test).

 

Figure 3
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Fig. 2B Probability of disappearance of cysts. Graph shows disappearance probability of giant cysts in continuous percutaneous catheter drainage group. There were no events over entire follow-up period in single-session sclerotherapy group. In percutaneous catheter drainage group, there were no disappearance events up to 12 months after treatment and six events 12–24 months after treatment (p = 0.009, log-rank test).

 

Figure 4
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Fig. 2C Probability of disappearance of cysts. Graph shows disappearance probability of moderately large cysts in continuous percutaneous catheter drainage (dashed line) and single-session sclerotherapy (solid line) groups. There were 18 and 13 disappearance events, respectively (not significant, log-rank test).

 

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