A simple modification using the appendix as efferent limb in ileocolonic reservoir (Mainz pouch)

Area of Science:

• Urology
• Surgical Oncology
• Gastrointestinal Surgery

Background:

• Radical cystectomy for invasive bladder cancer necessitates urinary diversion.
• Ileocolonic pouches are established methods for urinary reconstruction.
• Optimizing pouch function and surgical simplicity remains a focus in reconstructive urology.

Observation:

• The appendix was utilized as the efferent limb in the Mainz ileocolonic pouch construction.
• Two patients undergoing radical cystectomy for invasive bladder cancer received this modification.
• The functional outcomes and procedural aspects were evaluated.

Findings:

• The appendix-based efferent limb resulted in a low-pressure pouch system.
• The constructed pouch demonstrated sufficient capacity for urine storage.
• Complete urinary continence was achieved in both patients.

Implications:

• This technique represents a potentially useful modification of the standard ileocolonic pouch.
• The simplicity of using the appendix may streamline the surgical procedure.
• Further studies could explore the long-term efficacy and broader applicability of this approach in urinary diversion.