External stoma and peristomal complications following radical cystectomy and ileal conduit diversion: a systematic review.

An ileal conduit is the most common urinary diversion following radical cystectomy for invasive bladder cancer. Unlike internal complications commonly described in urological literature, reports about the incidence of external complications are sparse. A Medline database review (1996-2008) of English-language literature was conducted to: 1) describe and compare external stoma and peristomal complications and complication rates among outpatients with ileal conduit diversion following radical cystectomy, and 2) summarize commonly used prevention and management strategies. Fourteen publications (mostly retrospective, single-center studies) met inclusion criteria. The reported incidence of complications ranged from 15% to 65%. Divided according to pathogenesis, the most commonly reported complications are 1) stoma or abdominal wall-related changes--parastomal hernia, stoma prolapse, stenosis, and retraction; and 2) peristomal skin changes--chemical injury: irritant contact dermatitis, pseudoverrucous lesions, and alkaline crustations; mechanical injury: pressure ulcers, skin stripping injuries, mucocutaneous separation; infection: candidiasis, folliculitis; immunologic disorders: allergic contact dermatitis; and disease-related lesions: varices, pyoderma gangrenosum, malignancy. Peristomal complications also appear to be under-recognized and under-reported. Research to establish the validity and reliability of assessment tools and long-term follow-up studies are needed to improve the evidence-base of prevention and care.