Introduction
Ileocystoplasty is used quite commonly for reconstruction of the end stage bladder dysfunction when other more conservative management fails. Almost all parts of the gastrointestinal system have been successfully incorporated into the urinary bladder for purposed urinary diversion, increase capacity, improve compliance, or abate uncontrollable detrusor contractility, intractable interstitial cystitis.
Materials and methods
Ileocystoplasty was performed on 6 dogs ranging from 1 to 2 years old and weighing between 15 to 24 kg. Ileal segments were detubulized to U-form and were grafted to bladder after performing the supratrigonal cystectomy. Radiography and ultrasonography of augmented bladder were performed at 14 and 35 days after ileocystoplasty. Animals were euthanized on day 35. Neobladders were resected and histopathologic sections were taken. Sections were stained with hematoxylin-eosin and masson-trichrome.
Results
Ultrasonography did not reveal changes in echogenicity of abdominal organs. Neobladder walls thickened at the anastomotic site. Neobladder content were anechoic with some fine particles of hyperechogenicity. No radiographic changes were detected in plain and contrast radiography indicative of any leakage from anastomotic and suture lines. Vesicoureteral reflux, Hydroureter and hydronephrosis were not present. There were not marked morphologic changes in ileal mucosa, uroepithelial migrated from remaining portion of the bladder to cover the ileal segments. Inflammatory cells infiltrations were not significant in neobladders.
Conclusions
The results stated that all animals tolerated the ileocystoplasty well. Goblet cells increasing may be associated with postoperative complications; however, ileal segments are suitable for augmentation cystoplasty with acceptable outcome. Therefore ileocystoplasty is recommended for bladder augmentation in dogs.
References
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2. Hendren, W.H. and Hendren, R.B. (1990): Bladder augmentation: Experience with 129 children and young adults. J. Urol. 144: 445, 1990.
3. Kojima, Y., et al (1998): Mucosal morphological changes in the ileal neobladder. Br. J. Urol. 82, 1: 114-117, 1998.