| Summary: | Sigmoid diverticulitis can potentially lead to the development of pelvic abscesses. Mortality rate from intra-abdominal abscesses is as high as 35%, and patients with diverticulitis complicated by an abscess are at a high risk of recurrent diverticulitis. Recently, image-guided drainage has been performed using computed tomography or ultrasonography for the treatment of pelvic abscesses. Standard radiological pelvic abscess image-guided drainage methods consist of transabdominal, transgluteal, or cranio-caudal puncture approaches. However, these standard approaches have technical limitations due to intrapelvic organ structures. Therefore, we performed image-guided drainage using a percutaneous trans-bladder approach with a simpler 1-step puncture method and a less invasive 7-Fr drainage catheter in 2 cases of a 72-year-old female and a 53-year-old female with relapsed pelvic abscesses complicated by sigmoid diverticulitis due to difficulties involving the standard approach. The abscesses in both cases disappeared on follow-up computed tomography scans, demonstrating no pelvic abscess recurrence. Our results showed that trans-bladder image-guided drainage is an effective alternative method for treating pelvic abscesses.
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