Drainage Kinetics of Amebic Liver Abscess Following Percutaneous Catheter Drainage and Its Implications for Catheter Duration

Background: Optimal duration of percutaneous catheter drainage (PCD) in uncomplicated amebic liver abscess (ALA) is unclear. Methods: We retrospectively studied 75 adults with uncomplicated ALA undergoing PCD (2024–2025), analyzing daily drain output, catheter duration, complications, and imaging. Results: Drain output peaked early and plateaued after 72 h despite residual cavities. Median catheter duration was 8 days. Complications were more frequent with drainage >7 days. Residual cavities persisted in most patients without the need for reintervention. Conclusion: Most pus evacuation in ALA occurs within 72 h; residual cavities alone should not mandate prolonged catheter retention. Prospective multicenter trials are needed to define evidence-based removal criteria.