Purpose: A serous lined extramural ileal flap valve technique called the T limb was developed to prevent reflux of urine in an orthotopic bladder substitute called the T pouch. We evaluate our intermediate clinical and functional experience with the orthotopic T pouch ileal neobladder.
Materials and methods: From November 1996 through May 2000, 209 patients (169 men [80%], 40 women), with a mean age of 69 years (range 33 to 93) underwent construction of an orthotopic T pouch ileal neobladder after cystectomy. The indication for cystectomy included bladder cancer in 198 patients (95%). Median followup for the entire cohort was 33 months (range 0 to 69). Data were analyzed according to perioperative mortality, early (within 3 months) and late diversion related and diversion unrelated complications, radiographic evaluation of the upper urinary tract and urinary reservoir, and determination of renal function.
Results: Three patients (1.4%) died perioperatively. A total of 63 (30%) early complications occurred, 53 (25%) diversion unrelated and 10 (5%) diversion related. The most common early diversion unrelated complication was dehydration (10 patients). The most common early diversion related complication was urine leak in 6 patients. There were no early complications directly related to the antirefluxing T limb. Late complications occurred in 68 (32%) patients including 30 (14%) diversion unrelated and 38 (18%) diversion related. The most common late diversion unrelated complication was incisional hernia in 16 patients. Of the 38 late diversion related complications the most common were pouch calculi in 17 and ureteroileal obstruction in 9 patients. The only late complication directly related to the T limb was stenosis in 4 patients, 3 of whom received adjuvant pelvic radiation. A total of 181 patients had radiographic evaluation of the upper urinary tract including 162 (90%) with a normal radiographic study or evidence of postoperative decompression. An abnormal upper tract study was seen in 18 patients (10%) including 9 with ureteroileal obstruction and 4 with afferent T limb stenosis. Gravity cystography of the neobladder was normal in 143 of 158 (90%) evaluable patients. Reflux was seen in 15 patients (10%). Renal function as determined by serum creatinine was stable or improved in 96% of patients. Good daytime and nighttime continence was reported in 87% and 72% of evaluable patients, respectively. Overall 75% of patients complete void while 25% required some form of intermittent catheterization to empty the neobladder completely including 20% of men and 43% of women.
Conclusions: With intermediate followup the functional results of the T pouch ileal neobladder are acceptable. The antirefluxing T limb provides unobstructed urinary flow in 95% and reflux prevention in 90% of patients. Although these results are encouraging, further followup is required to assess the long-term results of the T pouch ileal neobladder.