Cyst drainage

The percutaneous treatment of renal and hepatic cysts by simple aspiration may afford only temporary relief as they frequently recur, but a more permanent result may be achieved by injecting a sclerosant, for example absolute alcohol or tetracycline into the cyst. In addition, percutaneous treatment of hydatid liver disease (traditionally avoided because of the risk of spreading parasites along the needle track and causing further infection) has been successfully performed by injecting of a scolicidal agent,11 avoiding the need for surgical removal.
Other applications include draining of pancreatic pseudocysts and inserting a cystogastrostomy tube with combined fluoroscopy and ultrasound guidance; the cyst is allowed to drain through this tube into the stomach. This is now better done endoscopically.
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