Related Experiment Video
Updated: Jan 28, 2026

Urethral Stricture Induction Followed by Buccal Mucosa Graft Urethroplasty in a Rat Model
Published on: April 28, 2023
Rectal Mucosa Graft Take in Staged Urethroplasty
Elizabeth J Pagura1, Jaime A Cavallo2, Leonard N Zinman2
1Tufts University, Medford, MA.
Abstract:
When an oral mucosa graft is not a viable option for urethroplasty, colonic mucosa grafts have served as a promising alternative since described by Igor A. Thyrmos in 1902.1 In previous studies, colonic mucosa graft retrieval required sigmoid resection2-3 which limited adoption of this technique. We previously described the success of a minimally-invasive transanal endoscopic microsurgical technique of rectal mucosa graft harvest for urethroplasty.4 Here, we pictorially demonstrate the take of a transanal endoscopically harvested rectal musosa graft used in a 2-stage anterior urethroplasty (to our knowledge, the first such 2-stage procedure) with 6 months of follow-up.
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