[Ultrasound-guided percutaneous tube drainage combined with directly-viewed debridement with cholangioscopy: a mini-invasive strategy for peripancreatic necrotizing infection].

Objective: To establish "an integrative therapy" of drainage and debridement on peripancreatic necrotizing infection (PPNI) with minimally invasive technique, and to detect its clinical effects.

Methods: There were 17 patients who accepted ultrasound-guided percutaneous tube drainage combined with directly-viewed debridement with cholangioscopy from March 2006 to January 2008. Percutaneous puncture and catheter (6 - 8 F) drainage were adopted on the patients suffering from PPNI with B-us guidance, then the drainage sinus was expanded progressively from 8 F to 24 F in diameter with Cook fascia dilator by degrees, and the 22 F or 24 F tube was easily placed into the interior of PPNI instead of the prior catheter.