Short ileal segment for orthotopic neobladder: a feasibility study

Area of Science:

• Urology
• Surgical Oncology
• Reconstructive Surgery

Background:

• Urinary diversion is a critical component of radical cystectomy for bladder cancer.
• Neobladder reconstruction aims to restore bladder function and improve quality of life.
• The length of the ileal segment used for pouch construction can impact functional outcomes.

Purpose of the Study:

• To evaluate the functional outcomes of a modified neobladder technique using a shorter ileal segment (25-35 cm).
• To compare the performance of a short pouch (SP) neobladder with a longer pouch (50-70 cm).

Main Methods:

• Prospective evaluation of 38 patients with short pouch (SP) neoblagers (25-35 cm ileum).
• Comparison with 41 patients with long pouch neoblagers (50-70 cm ileum).
• Assessment of pouch volume, post-void residual (PVR) volume, catheterization need, continence, and voiding frequency at 3 and 12 months post-surgery.

Main Results:

• The SP group exhibited significantly smaller pouch capacity (440 vs 840 mL) and PVR volumes at 12 months.
• SP group patients had a better 24-hour voiding frequency pattern at 3 and 12 months.
• Urinary continence was significantly improved in the SP group (63.2% vs 34.1%) at 12 months, with full continence improving from 26.3% to 63.2% over the first year.

Conclusions:

• A neobladder constructed from a 25-35 cm ileal segment provides adequate capacity and satisfactory urinary continence.
• The shorter pouch technique leads to smaller post-void residual volumes and an improved voiding frequency pattern.
• This modified neobladder approach demonstrates favorable functional outcomes during the first postoperative year.