Combined buccal and lingual mucosa grafts for urethroplasty: an experimental study in dogs

The Journal of Surgical Research
Xiao-Yong HuHuizhen Zhang

Abstract

To evaluate combined buccal mucosa and lingual mucosa grafts for urethroplasty in a dog model. Seven female mongrel dogs were randomly selected. After a segment of proximal urethra mucosa (4 cm × 1cm) was excised and onlayed urethroplasty was performed using the combined free buccal mucosa (2 cm × 1cm) graft harvested from the inferior cheek and free lingual mucosa graft (2 cm × 1cm) harvested from the inferior lateral surface of the tongue. A 12F urethral catheter was kept inside the urethra for a mean of 7 d. Retrograde urethrography was done and urethra diameter was calibrated with a 10Fr catheter before animals were sacrificed at wk 12. After sacrifice of all dogs, the grafted areas excised and evaluated by gross and histopathological examination. All dogs survived the procedure and there were no tongue and oral complications. One of the seven dogs developed a severe urethral stricture near the proximal anastomosis. The remaining six dogs voided spontaneously with no difficulty. Retrograde urethrography showed that no strictures or fistulas had formed. The combined buccal mucosa graft and lingual mucosa graft shortened by 10.2% after surgery, from a mean (SD) of 4 (0.15) to 3.59 (0.23) cm (statistical significance, P < 0.05...Continue Reading

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Citations

Nov 28, 2014·World Journal of Urology·Clemens M RosenbaumSascha A Ahyai
Jan 15, 2014·The Journal of Surgical Research·Minkai XieYaopeng Zhang
Jul 1, 2014·Urology·Matthias D HoferArun K Sharma
Apr 23, 2013·International Journal of Urology : Official Journal of the Japanese Urological Association·Adittya K SharmaG K Venkatesh
Dec 28, 2018·The Journal of Veterinary Medical Science·Da-Eun LeeHun-Young Yoon
Aug 31, 2020·International Urology and Nephrology·Yujie XuBing Li

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