Procedural sedation.
Ultrasound-guided 18-gauge entry needle into the right liver collection through a small amount of normal liver. Location within collection confirmed with contrast. A 12 French Dawson-Mueller locking pigtail catheter was placed over an Amplatz wire under fluoroscopy.
Approximately 300 ml of thick brown purulent fluid was aspirated and the sample was sent for pathology.
Drain secured with skin sutures.