Image-Guided Transrectal Drainage of Pelvic Abscesses in Children.

Objective:  To describe our technique and share our experience with image-guided transrectal drainage (TRD) of pelvic abscesses in children.

Materials and methods:  Retrospective review and analysis of indications for image-guided TRD and examination of procedural outcomes in pediatric patients with pelvic abscesses over 8 years.

Results:  A total of 69 patients (33 males and 36 females) with symptomatic pelvic abscesses underwent image-guided TRD. The median age and weight of the patients were 11.5 years (range, 3-18) and 46.8 kg (range, 15.1-118.0), respectively. The etiologies of the pelvic abscesses were perforated appendicitis (72.5%) and post-operative collections (27.5%). All patients presented with abdominal pain. Fever, emesis, and diarrhea were also common symptoms. The size of the pelvic abscesses ranged from 24.0 to 937.1 mL (median, 132.7). Technical success was achieved in 68 of 69 TRD procedures (98.6%). Clinical improvement was observed in all patients with technically successful TRD. The TRD catheter dwell time ranged from 0 to 10 days (median, 4.0). Most patients who underwent TRD for perforated appendicitis subsequently underwent elective appendectomy after the resolution of the pelvic abscess (84.0%). The median time from TRD to elective appendectomy was 2.8 months (range, 0.3-6.1). There were no procedure-related complications.

Conclusion:  Image-guided TRD is a safe and effective procedure with high technical and clinical success rates for the treatment of pelvic abscesses in children.