[Bladder and urethral reconstruction for bladder exstrophy].
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PURPOSE: In exstrophic anomalies the ultimate urological outcome largely depends on successful initial closure of the lower urinary tract and soft tissues. We believe that secure anterior pubic fixation is crucial for ensuring successful closure. After being dissatisfied with other methods of anterior pubic fixation we introduced the 3-loop method. The 3-loop technique and our experience with it are described. MATERIALS AND METHODS: In 2 years 7 consecutive cases of bladder exstrophy were closed using the 3-loop technique. Patient age at closure ranged from newborn to 9 years. RESULTS: In all 7 patients closure was successful and there was no cutting through of the wires, bony erosion, or erosion into the reconstructed bladder neck or urethra. The duration of postoperative traction was only 2 weeks. CONCLUSIONS: The 3-loop method is useful and reliable for secure anterior pubic fixation of the pubes in bladder exstrophy patients and it contributes positively to the ultimate urological outcome.
PURPOSE: Despite widespread use of modern staged reconstruction for classic bladder exstrophy, there remains a role for combined bladder closure and epispadias repair when primary closure is delayed or initial reconstruction has failed. The principle of combining bladder and urethral closure in 1 operation was first proposed more than 40 years ago, and represents a demanding technical procedure. We recount our experience to date with this approach. MATERIALS AND METHODS: A total of 38 boys underwent combined bladder and epispadias repair using pelvic osteotomies. Five cases were delayed primary closures owing to a bladder template unsuitable for newborn closure. A total of 30 cases were previous failed bladder closures, with concurrent epispadias repair in 6. The 3 remaining cases were staged closures where the epispadias repair failed, leading to bladder prolapse via the posterior urethra. Overall, there was a major bladder prolapse in 25 cases, and separation of the pubic symphysis with dehiscence of anterior abdominal wall structures and bladder in 8. RESULTS: Mean age at surgery was 26.5 months for the 33 reclosures. A total of 10 boys had development of a urethrocutaneous fistula and 4 had development of strictures. A total of 19 patients required additional procedures of the bladder neck (endoscopic), urethra or penis. A later bladder neck reconstruction was undertaken in 19 boys, of whom 12 are continent. Seven boys underwent continent diversion and 5 are considering the procedure. A total of 14 boys are awaiting adequate capacity for bladder neck reconstruction. Ureteral reimplantation was performed in 22 patients, and no patient was rendered hypospadiac. CONCLUSIONS: When combined closure is applied to failed previous exstrophy repair one can expect at best a 50% continence rate without continent diversion. Furthermore, based on the experience at this institution the majority of patients require ureteral reimplantation, and many require additional surgery to the penis or urethra. However, with the application of modern reconstructive techniques continence and a cosmetically pleasing phallus can be expected in most cases, although at the expense of multiple surgical procedures.
A study has been made of 16 girls (14 with bladder exstrophy and 2 with epispadias) treated in the United Birmingham Hospitals since 1946 and surviving to puberty. Eight of these are married, of whom 5 have been delivered of 8 children. Ten have required some form of gynaecological surgery, with uterine prolapse as the most troublesome lesion.
A total of 16 boys (8 with primary epispadias and 8 with bladder exstrophy) underwent epispadias reconstruction as a 1-stage procedure. Reverse meatal advancement of MAGPI, ventral transposition of the neourethra and chordee correction by corporeal rotation or "cavernocavernostomy" were performed as primary (13 boys) or secondary/salvage (3 boys) procedures. At a mean followup of 27 months all children had a horizontal or downward angled penis while standing. Catheterization in 10 children revealed an easily negotiable neourethral channel. Minor revision surgery was necessary in the area of previous paraexstrophy flaps in 2 cases, and 1 child required neourethral tapering and proximal anastomotic revision. The Cantwell-Ransley epispadias repair produces a good functional and cosmetic result.
A new surgical technique for primary reconstruction of bladder exstrophy is described. Human cranial dura mater is used as an alloplastic free graft to replace the missing anterior bladder wall. The technique has been successfully applied to 8 patients and the early achievement of good bladder capacity seems to improve urinary continence.
Since the 1970's, the staged reconstruction of bladder exstrophy has yielded consistent surgical success. The Johns Hopkins Hospital approach begins with early pelvic ring approximation with abdominal wall, bladder, and posterior urethral closure. Within the first 72 hours of life, the malleable pelvis can sometimes be approximated without osteotomies. Beyond this age, the author's prefer a combined vertical iliac and horizontal innominate osteotomy. Second, we typically perform the epispadias closure at 1 year of age. A modified Cantwell-Ransley technique is performed, usually yielding an increase in bladder capacity and very satisfactory results. In the last phase, the modified Young-Dees-Leadbetter continence procedure along with transtrigonal/cephalotrigonal ureteroneocystostomies are performed when the urethra is catheterizable, the bladder capacity is 60 cc or greater, and the child will participate in a postoperative voiding program (typically 4-5 years of age). This applied approach usually results in a continent, voiding patient with pleasing external genitalia and preserved renal function.
A report is given on three women with ureterointestinal anastomosis after having a bladder exstrophy operation. Two of them carried out their pregnancies and had spontaneous deliveries. The problems of management during pregnancy are discussed and the literature is reviewed.
The results of neonatal surgery for bladder exstrophy are not very satisfactory. A significant percentage of patients present in later childhood or adolescence for correction of their residual deformities. We have reconstructed 26 patients, correcting their entire urogenital and cosmetic deformity in a one-stage procedure. The results show that one-stage total reconstruction is possible and is preferable to serial correction of the various individual abnormalities. The principles of surgical reoperation in adolescence are the same as those now established for the primary correction in neonatal life.
Ten patients with different types of internal urinary diversion for bladder exstrophy were studied prospectively in order to assess metabolic abnormalities and morphological, histochemical and lectin binding changes in the colorectal mucosa. The histochemical and/or lectin binding changes which were found in the majority of patients were identical to those observed in premalignant and malignant conditions of the colon. In some cases they were detectable 3 years after the initial examination but were completely absent from the colorectal mucosa of normal subjects. Metabolic disturbances (metabolic acidosis, increased anion gap, hyperchloraemia) were observed in a substantial number of asymptomatic patients. These findings stress the need for regular endoscopic, histological and metabolic follow-up in these patients and for life-long treatment with bicarbonate or citrate.
Preservation of renal function is one of the major goals of staged reconstruction of bladder exstrophy. In 68 exstrophy patients who have completed staged reconstruction, 10 (14.7%) have developed renal scarring. A multiple factorial analysis of these patients showed the following factors to be statistically related to the development of renal scarring: (1) one or more febrile urinary tract infections prior to bladder neck reconstruction (P less than .001); (2) failure to utilize antibiotic prophylaxis following initial bladder closure (P less than .005); (3) elevated urinary residuals greater than 50 mL (P less than .02); (4) a diagnosis of elevated urinary residuals greater than 6 months following the onset of continence (P less than .001); and (5) one or more febrile urinary tract infections following bladder neck reconstruction (P less than .005).
The authors report a case of pyeloureteric adenocarcinoma in a urinary diversion inserted for bladder exstrophy and in a context of chronic pyelonephritis secondary to renal stones. The various aetiopathogenic hypotheses are discussed. Renal stones and chronic inflammation very probably played an important role in the development of this type of adenocarcinoma in the urothelium.
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Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.