Ureteroscopic holmium laser to transect the greater omentum to remove an abdominal drain: Four case reports

Figure 1 Abdominal computed tomography scan show. A: The scan shows the drain passing through the abdominal cavity, and the surrounding tissue possibly wrapped around the drain (white arrow); B: The tissue around the drainage tube is dense, the density inside the drain is non-uniform, and the tissue may be incarcerated (orange arrow).

Figure 2 Schematic diagram of the greater omentum incarcerated in the drainage tube. The incarcerated greater omentum was edematous and blocked the drainage tube.

Figure 3 The greater omentum is incarcerated in the peritoneal drain and was cut using a holmium laser under ureteroscopy. A: The greater omentum protrudes into the drain through the side hole and is incarcerated; B: The greater omentum is transected by the holmium laser fiber; C and D: Show the conditions of the sinus tract and abdominal cavity examined by ureteroscopy after drain removal through the drainage sinus tract, and no bleeding is observed (arrow indicates the greater omentum in the abdominal cavity).