Percutaneous alcohol sclerotherapy for symptomatic congenital cysts

Abstract

Twenty patients with symtomatic congenital cysts in the liver. kidney. thyroid. and lower n eck underwe nt. ultrasound guided percutaneous aspiration through a dra inage catheter with te mporary instillation of 95% ethanol into the cyst . Our procedure was based on the method as described by Bean and Rodan(16l in 1985. Additionaly. two othe steps were odded to prevent the dilutional effect of residual cyst fluid . One was the preliminary washing of th e cyst with alcohol. The other was to treat with 30% replace m e nt of alcohol every 10 minutes during the treatm ent secession. Minor complications of transie nt temperature e levation and haziness occurred . butj no major complications were encountered.After the alcohol treatmen t follow up examinations were performed with computed tomography or ultrasonography a t 6 wee ks. 6 months. 9 months a nd 15 months. Although there was diminished size. recurrence was noted in 6 of twenty patients(30%l at 6 weeks and one of twenty patients(5%l at 6 months. There was no recurrence at 9 months a nd 15 months.The results indicated that perc utaneous aspiration a nd alcohol sclerotherapy are safe and effective the rapy for symptomatic congenital cysts.

Recurrence after percutaneous ethanol ablation of simple hepatic, renal, and splenic cysts: is it true recurrence requiring an additional treatment?

“…The optimal amount of ethanol injected for ablation therapy is not well established, and varies from 5Á10 ml to one-third of the cyst volume (3,6,7,9,11,13,14). According to our experience, the cyst cavity collapses with an irregular contour immediately after complete drainage of the cystic fluid.…”

Sclerotherapy of renal cysts using acetic acid: a comparison with ethanol sclerotherapy

“…by using the sclerosing agent in excess of the standard volume (up to 40% or 50% of the aspirated volume) or adding multiple sessions of the procedure, were needed to increase the efficacy. As a result, catheters had to be placed in the renal cyst for three or more days for complete drainage of the transudate by sclerotherapy, and thus treatment-related patient discomfort and the duration of hospital stay were increased [8,9].…”

“…Several sclerosants have been used for sclerotherapy, including ethanol, which is a safe effective sclerosant for simple renal cysts. However, ethanol can cause complications such as fever and drunkenness, and its effectiveness is decreased through dilution by the fluid remaining in the renal cyst [8,9].…”