[Nerve-sparing cystectomy and ileal bladder substitution]. / Cistectomia nerve-sparing e neovescica ileale di sostituzione.

Nerve-sparing techniques and bladder substitution following radical cystectomy allow today to obviate functional sequelae once registered in this type of surgery. Intraoperative identification of the pelvic plexus, which provides autonomic innervation to the corpora cavernosa, is necessary to preserve sexual function. Ileal orthotopic bladder substitution with preservation of the distal urethral sphincter assures a micturition per urethram and the urinary continence. The Authors report their experience with the Studer and Zingg procedure (ileal orthotopic bladder reservoir) performed in 26 cases. Results, technique, complications, and long-term evaluation are stressed.

Primary cancer of the urinary bladder: CT evaluation of the T parameter with different techniques.

The evaluation of mural invasion (T) in primary urinary bladder carcinoma is important in the planning of an appropriate surgical or radiochemotherapeutic strategy. Previous investigators using computed tomography (CT) have evaluated the bladder filled with urine, urine opacified with iodinated contrast material, or air insufflation. The purpose of this trial was to establish which of these three techniques was the most accurate by comparing data obtained in postoperative staging (pT). Sixty-five patients with primary bladder cancer were enrolled, all of whom were studied by spiral CT with these three techniques. Patients were assigned to four stage groups: Ta-T1, T2-T3a, T3b, and T4. The results demonstrated total accuracies of 95% for the air-insufflated bladder, 90.5% for opacified urine, and 87% for noncontrast studies. In conclusion, the air-insufflated bladder is the more accurate technique in the evaluation of the T parameter in primary bladder cancer, especially in the first and third stage groups.

Serum osteocalcin in monitoring bone metastases in advanced prostatic cancer.

Osteocalcin, a K-dependent vitamin protein, was studied in a group of advanced prostatic carcinoma patients to test the usefulness of this marker for diagnosing bone metastases. Osteocalcin levels were above the norm in 22 out of 27 patients with bone metastases, although high levels were not observed in patients without bone metastases. High sensitivity and specificity levels of serum osteocalcin appear to be strongly correlated to metastatic bone involvement and disease relapse after hormone treatment. Although these results must be confirmed on a larger series of patients, this protein appears to be a useful biological marker in prostatic cancer.

Ureteral anastomosis in the orthotopic ileal neobladder: comparison of 2 techniques.

PURPOSE: The functional results and complications of 2 different ureteroileal anastomoses were evaluated in patients with bladder cancer undergoing radical cystectomy and orthotopic ileal bladder substitution. MATERIALS AND METHODS: Between 1989 and 1995, 102 patients underwent creation of a low pressure neobladder. In the first 50 cases the ureteroileal anastomosis was created with a split-cuff nipple technique as an additional antireflux mechanism. In the next 52 cases the ureteroileal anastomoses were constructed via the direct end-to-side technique counting on the antireflux protection of the afferent tubular limb. RESULTS: Stenosis occurred in 7 of the 100 ureters (6 patients) treated with the split-cuff nipple technique and 7 of 104 treated with a direct end-to-side anastomosis. This complication occurred more commonly in the left ureter (11 of 14 patients). Reflux was noted at cystography in 10 cases with the split-cuff nipple method and 12 with end-to-side anastomoses, and was symptomatic in only 3 patients. Four ureteral strictures were treated successfully with primary open repair. Percutaneous dilation and stenting were performed for 8 ureteral strictures: 2 cases were successful, 3 failed and 3 are unresolved. CONCLUSIONS: We observed no differences between the antireflux split-cuff and end-to-side anastomoses with regard to stricture formation or ureteral reflux. Therefore, we do not believe that there is a need to create antireflux ureteral anastomoses due to the tubular afferent ileal segment and given that the reflux is asymptomatic in most patients. Strictures may be treated with percutaneous balloon dilation and stenting but open repair appeared to be more effective.

Lower urinary tract reconstruction following cystectomy: experience and results in 96 patients using the orthotopic ileal bladder substitution of Studer et al.

Between 1989 and 1993 96 patients (89 males and 7 females) affected with invasive neoplasms of the bladder underwent surgery consisting of the creation of an orthotopic ileal neobladder according to Studer et al., after radical cystectomy. Patient selection and details of the surgical procedure are described. An accurate follow-up of 3-60 months (mean: 28 months) is presented. There have been 6 perioperative deaths (6.2%) and 11 early complications, all directly related to the neobladder and requiring reoperation in 6 cases (6.2%). Late complications required rehospitalization in 23 cases (23.9%) and a second reoperation was necessary in 10 (10.4%). The urodynamic tests show that the neobladder assumes an average capacity at about 330 cm3 after 1 year. Pressure at maximum capacity decreases in time and ranges from 10 to 20 cm H2O at 2 years. After 1 year, the complete urinary continence rate by day is 97% and the stress incontinence rate is 22%. Night-time continence, instead, increases to 74% after 1 year and to 83% after 2 years. In female patients, the functional results were satisfactory thanks to careful patient selection and to the surgical procedure adopted. Twenty-four patients had disease progression; 17 of these patients with locally advanced neoplasms died. The authors believe that the orthotopic ileal continent reservoir can be a satisfactory solution after cystectomy for bladder cancer, offering the patients a better quality of life compared to other urinary diversions both in male and female patients.