An experimental and clinical study of colic mucosa graft for urethral reconstruction
- VernacularTitle:结肠粘膜重建尿道的动物实验与临床应用
- Author:
Yuemin XU
;
Xinru ZHANG
;
Yong QIAO
- Publication Type:Journal Article
- Keywords:
Urethral stricture;
Surgical procedures,operative;
Intestinal mucosa
- From:
Chinese Journal of Urology
2001;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the possibility of urethroplasty with a free graft of colic mucosa for the treatment of complex anterior urethral stricture of long length. Methods Six dogs underwent a procedure in which the urethral mucosa was totally removed and replaced with a free graft of colic mucosa. All the dogs were sacrificed 12 weeks after the procedure for histological examination of urethra.Besides, a patient with complex anterior urethral stricture was treated by urethroplasty with the use of a colic mucosal graft.Retrograde urethrography,urethroscopy and uroflowmetry were carried out 3 months after operation. Results Histological examination revealed that all the grafted colic mucosa have survived in the urethra of the experimental dogs and some of the glandular epithe lium has been transformed into urethelium. Clinically,the patient voided well after removal of the urethral stent.Neither necrosis of the neourethral mucosa nor stenosis at the anastomosis sites has been observed on urethroscopy. Retrograde urethrogram demonstrated a wide urethral caliber with no significant graft sacculation. Uroflowmetry examination showed the maximum flow rate was 30 ml/s. Conclusions Colic mucosa graft urethroplasty is an effective one stage procedure for the treatment of complex anterior urethral stricture. The technique is useful for urethral reconstruction when local or preputial skin and buccal or bladder mucosa are not available.
