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Updated: May 21, 2026
Assessing Urinary Tract Junction Obstruction Defects by Methylene Blue Dye Injection
Published on: October 12, 2017
Intravesical methylene blue facilitates precise identification of the diverticular neck during robot-assisted
Charles R Moore1, Samir P Shirodkar, Michael A Avallone
1Division of Endourology, Department of Urology, University of Miami Miller School of Medicine, Miami, Florida 33136, USA.
Background:
The aim of this report is to describe our surgical technique for robot-assisted laparoscopic bladder diverticulectomy. In this technique, methylene blue is instilled into the bladder to aid in intra-abdominal identification of the diverticular neck.
Subjects And Methods:
We retrospectively reviewed the records of patients who underwent robot-assisted bladder diverticulectomy by a single surgeon.
Results:
Between September 2008 and January 2011, 5 patients successfully underwent robot-assisted laparoscopic bladder diverticulectomy using 1% intravesical methylene blue. All cases were completed without intraoperative complication or need for open conversion. Mean operative time was 216 minutes, with a mean estimated blood loss of 45 mL. Patients were discharged 1-2 days following surgery. No patient experienced a perioperative complication.
Conclusions:
The robot-assisted approach for bladder diverticulectomy is a viable alternative to both open and laparoscopic surgery. The use of intravesical methylene blue greatly aids in identification of the diverticular neck during this procedure.
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