COMPARATIVE STUDY OF OUTCOMES OF PERCUTANEOUS NEEDLE ASPIRATION VERSUS PIGTAIL CATHETER DRAINAGE FOR SOLITARY LIVER ABSCESS.

Abstract

Objective: The aim of this study was to compare the outcomes of ultrasound guided percutaneous needle aspiration and percutaneous pigtail catheter drainage in the treatment of solitary liver abscess with respect to successful drainage, clinical improvement, reduction in size of abscess cavity, duration of hospital stay and procedure related complications. Methods: Prospective randomized study on 108 patients treated over a period of 30 months. Using standard randomization they were divided equally into two groups A and B. Group A patients underwent usg guided percutaneous needle aspiration for a maximum of three attempts, and Group B patients were treated by pigtail catheter drainage. All the patients received a uniform protocol based supportive care and antimicrobial treatment. Outcomes were compared with respect to successful drainage, resolution of symptom, fty percent reduction in size of abscess cavity, hospital stay duration and procedure related complications. Results: A successful drainage was noted in 52(96%) patients in group B treated with PCD and 46 (84%) patients in group A treated with PNA. 8(11%) patients in group A did not respond to three attempts due to very thick pus and they were offered pigtail catheter drainage. The duration required for initial clinical improvement and fty percent reduction of size of abscess cavity was signicantly lesser in group B. Though the duration of hospital stay was lesser in group B the difference was not statistically signicant. Complication was noted only in group B where one patient developed perihepatic and subdiaphragmatic collection and the other had peritonitis. Both were cured after surgical intervention. Conclusion: Both percutaneous needle aspiration and pigtail catheter drainage are almost equally effective in the treatment of solitary liver abscess. Though pigtail catheter drainage helped in earlier clinical improvement and reduction in cavity size but the difference in duration required for full recovery and complete resolution of abscess cavity was not statistically signicant. Hence the selection of the procedure needs to be individualized and should take into account various factors like patient's general condition, laboratory parameters, and nature of abscess cavity.