Endoscopic ultrasound-guided transrectal drainage of a pelvic abscess after Hinchey II sigmoid colon diverticulitis: A case report

Figure 1 Abdominal computed tomography scan in axial and coronal view. The well-encapsulated pelvic abscess measuring 8 cm × 8 cm × 5 cm is seen as a dense air-fluid collection in the proximity of the sigmoid colon. A: Axial view; B: Coronal view.

Figure 2 Endoscopic ultrasound scan during lumen-apposing metal stent insertion. A: An Endoscopic ultrasound image of the inserted lumen-apposing metal stent (LAMS), connecting the bowel lumen and the abscess collection; B: An endoscopic view of in-situ LAMS, draining the pus from the abscess collection.

Figure 3 Follow-up abdominal computed tomography scan in axial and coronal views. The lumen-apposing metal stent position is appropriate and lies transluminal in the sigmoid wall. Regression of the collection is seen with only some gas remaining at the site. A: Axial view; B: Coronal view.

Figure 4 The findings during the removal of the lumen-apposing metal stent. A: The lumen-apposing metal stent (LAMS) is seen in situ with regression of the abscess cavity; B: The remaining fistular canal is covered with granulation tissue after the removal of LAMS.