Laparoscopic Reconstructive Urology

Laparoscopic repair of female genitourinary fistulae: 10-year single-center experience

INTRODUCTION AND HYPOTHESIS

Laparoscopic repair of different female genitourinary fistulae has been recently reported, including both conventional and laparoendoscopic single-site surgery (LESS). We present our 10-year single-center experience of the laparoscopic repair of different types of female genitourinary fistulae.

METHODS

A retrospective analysis of our records over the last 10 years was performed. Type of fistula, etiology, laparoscopic approach, operative data, postoperative outcome, and follow-up were recorded.

RESULTS

Overall, 46 patients with laparoscopic repair of genitourinary fistulae were reported: 25 had vesicovaginal fistulae (VVF), 14 had vesicouterine fistulae (VUF), and 7 had ureterovaginal fistulae (UVF). Thirty-three patients had conventional laparoscopic repair, whereas 7 VVF and 6 VUF had LESS repair. In all patients with VVF and VUF, extravesical repair was carried out by excising the fistulous tract and closing both the bladder and the vagina or the uterus with interposing tissue in-between. In patients with UVF, extravesical ureteric re-implantation was performed. Mean operative time was 176 ± 25 min. Mean blood loss was 105 ± 25 cc. No intraoperative or postoperative complications occurred. None was converted to open surgery. Mean postoperative hospital stay was 3.2 ± 1.2 days. After a mean follow-up of 6.3 ± 3.1 years, all patients had undergone successful repair, except for one patient with complex VVF.

CONCLUSIONS

Laparoscopic repair of VVF, VUF, and UVF is a feasible procedure with a high success rate and low morbidity. LESS repair of VVF and VUF has a comparable success rate to conventional laparoscopy, but with a shorter hospital stay and fewer analgesic requirements.

Complex pelvic-ureteric junction obstruction (PUJO): successful management with robotic assistance

The management of complex pelvic-ureteric junction obstruction (PUJO) is challenging. The traditional open surgical approach used large incisions with prolonged post-operative recovery. Laparoscopic reconstruction in complex PUJO requires surgical expertise and is challenging to master. Robotic assistance has provided a viable minimally invasive alternative replicating the open surgical approach for such complex cases. In the present study, we evaluated the feasibility and success of robot-assisted reconstructive procedures in such situations.

Ureterocalicostomy for Reconstruction of Complicated Ureteropelvic Junction Obstruction in Adults: Long-Term Outcome and Factors Predicting Failure in a Contemporary Cohort

PURPOSE

Ureterocalicostomy is a well established treatment option in patients who have recurrent ureteropelvic junction obstruction with postoperative fibrosis and a relatively inaccessible renal pelvis. We evaluated the long-term outcome of ureterocalicostomy and factors predicting its failure.

MATERIALS AND METHODS

We retrospectively analyzed data on 72 patients who underwent open or laparoscopic ureterocalicostomy from 2000 to 2014. Variables that may affect the outcomes of ureterocalicostomy were assessed with regard to primary pathology findings, patient age, serum creatinine, preoperative renal size (less than and greater than 15 cm), renal cortical thickness (less than and greater than 5 mm), hydronephrosis grade and preoperative renal function (glomerular filtration rate less than and greater than 20 ml/minute/1.73 m2). The surgery outcome was calculated in terms of success or failure. Factors predicting failure were evaluated by univariate and multivariate analysis. Failure was defined as an additional procedure required postoperatively due to persistent symptoms and/or followup renal scan showing persistent significant obstruction with deterioration of renal function on at least 2 occasions 3 months apart. Patients with less than 2-year followup were excluded from study.

RESULTS

We analyzed data on 72 patients who underwent ureterocalicostomy during this period. Mean ± SD age of the study group was 28.9 ± 12.3 years and mean baseline serum creatinine was 1.1 ± 0.3 mg/dl. The mean glomerular filtration rate was 27.8 ± 11.6 ml/minute/1.73 m2 and mean cortical thickness of the operated kidney was 7 ± 3.86 mm. Common indications for ureterocalicostomy were failed previous pyeloplasty and/or endopyelotomy in 35 patients (48.6%) and secondary ureteropelvic junction obstruction after pyelolithotomy or percutaneous nephrolithotomy in 24 (33.3%). The most common complication was urinary tract infection, which was seen in 22 patients (30.6%). At a mean followup of 60.3 ± 13.6 months 50 patients (69.5%) had a successful outcome. Treatment failed in 22 patients (30.5%), including 6 who required nephrectomy, while 13 were treated with frequent changes of Double-J® stents or with balloon dilation. In 3 patients ureterocalicostomy was repeated. The rate of failed ureterocalicostomy was higher in patients with a low preoperative glomerular filtration rate (less than 20 ml/minute/1.73 m2), attenuated cortical thickness (less than 5 mm) and higher creatinine (greater than 1.7 mg/dl) on univariate analysis. However, on multivariate analysis poor cortical thickness and a low glomerular filtration rate were independent predictors of failure.

CONCLUSIONS

Ureterocalicostomy is an acceptable salvage option with a satisfactory long-term outcome. Patients with a low preoperative glomerular filtration rate (less than 20 ml/minute/1.73 m2) and a thinned out cortex (less than 5 mm) showed a poor outcome after ureterocalicostomy.

Long Term Outcomes of Laparoscopic and Open Modified Lich-Gregoir Reimplantation in Adults: A multicentric comparative study

Background & Objective:

Obstructive ureteral pathologies in adult patients are most commonly due to ureteral strictures and secondary to surgical interventions. In this study, we aimed to compare open and laparoscopic modified Lich-Gregoir ureteral reimplantation with regards to outcomes in benign ureteral pathologies in adult patients.

Methods:

Between December 2008 and December 2014, 32 open cases and 29 laparoscopic cases were performed as per the data retrieved from surgical databases. All laparoscopic procedures were performed in Bakirkoy Dr. Sadi Konuk Training and Research Hospital(BEAH) and all open ureteral reimplantation procedures in Kartal Dr Lutfi Kirdar Training and Research Hospital(KEAH) and Okmeydani Training and Research Hospital(OEAH).

Results:

The mean operation time was significantly lower in the group of patients operated with open group (142.5 minutes versus 188.9 minutes; P< 0.0001). The mean duration of follow-up was longer in the laparoscopy group (31 versus 28 months; p< 0.0001). The mean amount of operation associated blood loss was significantly lower in patients operated laparoscopically (93.7 mL versus 214 mL; P< 0.0001). The mean VAS score obtained six hours after surgery was 6.6 ± 0.8 in open group, and 5.8 ± 0.7 in laparoscopic group (p=0.0004). The mean VAS scores measured at post-operative day 1 was 4.5 ± 0.7 in open group and 3.7 ± 0.9 in laparoscopy group. Time required to achieve the pre-operative capability of daily activities was significantly longer in open group (15 ± 1.4 days vs 11 ± 1.4 days; p< 0.0001).

Conclusion:

Despite open techniques provide shorter operation time and laparoscopic techniques require long learning curve, we think that laparoscopic techniques are superior to open ones since that they provide a better post-operative comfort and are better tolerated in terms of complications.

Pediatric Robot-Assisted Laparoscopic Pyeloplasty

The laparoscopic approach to the pyeloplasty procedure has proven to be safe and effective in the pediatric population. Multiple studies have revealed outcomes comparable to the open approach. However, a major drawback to laparoscopy is the technical challenge of precise suturing in the small working space in children. The advantages of robotic surgery when compared to conventional laparoscopy have been well established and include motion scaling, enhanced magnification, 3-dimensional stereoscopic vision, and improved instrument dexterity. As a result, surgeons with limited laparoscopic experience are able to more readily acquire robotic surgical skills. Limitations of the robotic platform include its high costs for acquisition and maintenance, as well as the need for additional robotic surgical training. In this article, we review the current status of the robot-assisted laparoscopic pyeloplasty, including a brief history, comparative outcomes, cost considerations, and training.

Two-Port Laparoscopic Reconstructive Surgery of the Urinary Tract with Reusable Umbilical System (Hybrid Less): A Proof of Concept Study

OBJECTIVES

We compared perioperative results and complications of reconstructive surgery of the urinary tract performed using a multichannel platform through the umbilicus and one additional 3.5-mm with a cohort of patients simultaneously treated with conventional 4-port laparoscopy.

MATERIALS AND METHODS

Matched-pair study comparing perioperative outcomes, postoperative visual analogue pain scale (VAPS) and morbidity of 2-port (n = 20) and 4-port (n = 10) laparoscopic reconstructive urological surgery. Preoperative and perioperative data compared included demographics, type of surgery, operative time, blood loss, decrease in serum hemoglobin, operative complications, length of stay and postoperative complications according to Clavien-Dindo classification.

RESULTS

There was no significant difference between groups regarding age, gender, body mass index, American Society of Anesthesiologists score, type of surgery, operative time, operative complications and intraoperative or postoperative transfusion. Estimated blood loss was lower using reduced-port approach. VAPS at postoperative day one was significantly lower for 2-port approach and so was the length of stay. Patient satisfaction with the wound was higher for 2-port surgery. Differences were not observed in number and severity of postoperative complications.

CONCLUSIONS

Urological reconstructive operations can be safely performed using the hybrid laparoendoscopic single-site umbilical approach, resulting in lower blood loss, higher patient satisfaction and lower postoperative pain, which also facilitate earlier hospital discharge, than the same reconstructive procedures performed through multiport conventional laparoscopy.

Transumbilical laparoendoscopic single-site ureteral reimplantation

OBJECTIVE

To analyze the outcomes of umbilical laparoendoscopic single-site (LESS) ureteral reimplantation using a reusable single-port platform.

MATERIAL AND METHOD

The casuistic of LESS ureteral reimplantation in 5 patients is presented. The surgical technique using KeyPort system (reusable umbilical single-site platform) is described. Dissection, suctioning and suturing by minilaparoscopy through 3.5mm accessory port in the iliac fossa are performed. Operative and postoperative outcomes are presented. The median follow-up at time of analysis was 11 ± 14 months.

RESULTS

The median age of patients was a 49 ± 34 year; male-female ratio was 1:1.15. Left surgery was carried out in all cases. In 4 patients, the etiology was secondary to stenosis (3 iatrogenic and 1 pelvic endometriosis). In the remaining case, the procedure was performed after excision of a symptomatic adult ureterocele. In all cases, bladder catheter and double-J ureteral catheter were inserted for 7 ± 3 and 30 ± 15 days and then removed. No conversion to convectional laparoscopic or open surgery occurred. The surgery time was 145 ± 60 min, and intraoperative bleeding was 100 ± 75 cc. Neither transfusion nor high analgesia was necessary. No postoperative complications, minor or major, have been reported. Hospital stay was 2 ± 0.5 days. In any patient, restenosis or worsening of renal function occurred.

CONCLUSIONS

In experimented centers, transumbilical laparoendoscopic single-site ureteroneocystostomy is a safe alternative with comparable results to conventional laparoscopy and an excellent cosmetic result at low cost thanks to device reuse.

Prospective randomized study to evaluate the feasibility and outcome of transmesocolic laparoscopic pyeloplasty and compare it with retrocolic laparoscopic pyeloplasty in pediatric and adolescent patients

OBJECTIVE

This prospective randomized study was designed to evaluate the feasibility and outcome of transmesocolic laparoscopic pyeloplasty (TMP) and compare it with retrocolic laparoscopic pyeloplasty (RLP) in pediatric and adolescent patients.

MATERIALS AND METHODS

Between September 2006 to May 2012, data of pediatric and adolescent patients undergoing laparoscopic pyeloplasty were recorded in a prospective manner. Data included age, pelvic volume, presence of stones, aberrant vessels, operative time, analgesics requirement and time to accept oral feeds and drain removal. Patients with left side pelviureteric junction obstruction with any size of pelvic volume, with or without renal stones and aberrant vessels were included in the study. Patients were assigned into two groups by simple randomization technique. A total of 38 TMP and 41 left sided RLP were performed. Median follow-up period for transmesocolic group was 12.5 months (9.5-62 months) and 14 months (8-66 months) for retro colic group. Outcome for this study was adequate drainage on renal scan, improvement in symptom and or resolution of hydronephrosis on ultrasound. Statistical analysis was performed using the Mann-Whitney test.

RESULTS

The mean patient age was 8.73 years in RLP and 7.73 years in TMP. In RLP group the mean operative time was 75.84 min (time from port insertion to pyeloplasty) and 135.4 min (total operative time) while it was 44.82 min and 104.82 min respectively in TMP group. Compared with classic RLP, TMP cases showed a significant reduction in operative time.

CONCLUSIONS

The transmesocolic approach for left sided pyeloplasty enables a shorter operative time even in the presence of large pelvis, aberrant vessel and stones without increasing morbidity in comparison to RLP approach.

Laparoscopic reconstruction of iatrogenic-induced lower ureteric strictures: Does timing of repair influence the outcome?

CONTEXT

Influence of timing of repair on outcome following laparoscopic reconstruction of lower ureteric strictures

AIMS

To assess the influence of timing of repair on outcome following laparoscopic reconstruction of lower ureteric strictures in our adult patient population.

SETTINGS AND DESIGN

Single surgeon operative experience in two institutes. Retrospective analysis.

MATERIALS AND METHODS

All patients were worked up in detail. All patients underwent cystoscopy and retrograde pyelography prior to laparoscopic approach. Patients were categorised into two groups: early repair (within seven days of inciting event) and delayed repair (after two weeks). Operative parameters and postoperative events were recorded. Postprocedure all patients were evaluated three monthly. Follow-up imaging was ordered at six months postoperatively. Improvement in renal function, resolution of hydronephrosis and unhindered drainage of contrast through the reconstructed unit on follow-up imaging was interpreted as a satisfactory outcome.

STATISTICAL ANALYSIS USED

Mean, standard deviation, equal variance t test, Mann Whitney Z test, Aspin-Welch unequal variance t test.

RESULTS

Thirty-six patients (37 units, 36 unilateral and 1 simultaneous bilateral) underwent laparoscopic ureteral reconstruction of lower ureteric stricture following iatrogenic injury - 21 early repair (Group I) and 15 delayed repair (Group II). All patients were hemodynamically stable at presentation. Early repair was more technically demanding with increased operation duration. There was no difference in blood loss, operative complications, postoperative parameters, or longterm outcome.

CONCLUSIONS

In hemodynamically stable patients, laparoscopic repair of iatrogenically induced lower ureteric strictures can be conveniently undertaken without undue delay from the inciting event. Compared to delayed repairs, the procedure is technically more demanding but morbidity incurred and outcome is at par.

Laparoscopic reconstruction for obstructive megaureter: single institution experience with short- and intermediate-term outcomes

PURPOSE

To narrate our experience with laparoscopic reconstruction of obstructive megaureter (MGU) and assess the intermediate-term outcome achieved.

PATIENTS AND METHODS

Patients were evaluated in detail including presenting complaints, biochemical profile, and imaging (ultrasonography [USG], diuretic renography [DR], magnetic resonance urography [MRU], and voiding cystourethrography [VCUG]). All patients with a diagnosis of obstructive MGU and salvageable renal unit were offered laparoscopic reconstruction. The standard laparoscopic exercise included ureteral adhesiolysis until the pathologic segment, dismemberment, straightening of the lower ureter, excisional tapering, and a nonrefluxing ureteroneocystostomy. Operative and postoperative parameters were recorded. Patients were evaluated postprocedure on a 3-month schedule. Follow-up imaging included USG and VCUG at 6 months and 1 year postprocedure and then at yearly intervals. MRU and DR were repeated at 1 year postprocedure.

RESULTS

Twelve patients (13 units-11 unilateral, and 1 bilateral) underwent laparoscopic tailoring and reimplantation for obstructive MGU. Mean age was 98.6 months. All patients were male. Mean body mass index was 17.69 kg/m(2). Presenting complaints were flank pain (n=8) and recurrent urinary infection (n=12). All procedures were completed via a laparoscopic approach. Mean operation duration was 183 minutes, and mean blood loss was 75 mL. Mean duration of hospital stay was 2.1 days. No major intraoperative or postoperative happenings were recorded. All patients were asymptomatic at follow-up with stable renal profile. Follow-up MRU revealed a decrease in ureteral and upper tract dilatation with satisfactory drainage in all. Follow-up VCUG demonstrated grade I vesicoureteral reflux in one patient. Eight patients completed 3-year follow-up with a satisfactory outcome.

CONCLUSION

Laparoscopic reconstruction of obstructive MGU offers satisfactory immediate- and intermediate-term outcome without undue prolonged morbidity.

Minimal invasive treatment of ureteropelvic junction obstruction in low volume pelvis: A comparative study of endopyelotomy and laparoscopic nondismembered pyeloplasty

OBJECTIVE

To evaluate the role of nondismembered laparoscopic pyeloplasty and percutaneous endopyelotomy for ureteropelvic junction obstruction (UPJO) with low volume renal pelvis.

MATERIAL AND METHODS

Retrospective acquired data of 34 patients of laparoscopic nondismembered pyeloplasty was compared with 26 patients of UPJO with pelvic volume less than 50 ml undergoing antegrade endopyelotomy and analyzed for clinical parameters, operative outcomes and success of procedures. All patients were followed up clinically and with diuretic renogram at regular intervals.

RESULTS

Mean age, renal pelvic volume and preoperative glomerular filtration rate (GFR) was 25 years, 43.6 ml and 42.5 ml/min, respectively in endopyelotomy group and 21 years, 34.4 ml and 39.9 ml/min, respectively in laparoscopic pyeloplasty group. Mean operative time, postoperative analgesic requirement and mean hospital stay was 100min, 250 mg and 4 days, respectively in endopyelotomy group and 210 min, 300 mg and 4 days, respectively in laparoscopic pyeloplasty group. Only operative time was significantly different between two groups (P < 0.05). Mean follow-up was 36 and 39 months and success rates were 91.2% and 88.8% in laparoscopy and endopyelotomy group, respectively (P < 0.05). No significant complication was seen in endopyelotomy group while two patients had hematuria (one requiring blood transfusion) and three had increased drain output for more than 3 days in laparoscopy group.

CONCLUSION

Percutaneous endopyelotomy is associated with significantly less operative time and postoperative complication rate and provides equivalent success in comparison to nondismembered laparoscopic pyeloplasty in patients with UPJO and low volume pelvis. It can be a preferred minimally invasive treatment modality for such patients.

Laparoscopic reconstructive urology

Objective:

Laparoscopic reconstructive urology is undergoing rapid change. We review the current status of laparoscopic reconstructive urology, with particular respect to pyeloplasty and reconstructive ureteric surgery.

Methods:

An extensive Medline search of reconstructive laparoscopic procedures was undertaken. The initial reports and large series reports of a range of procedures was examined and summarised. The most commonly practised procedure within this remit is laparoscopic pyeloplasty. Several series of over 100 patients have been published. Success rates average over 90% for laparoscopic pyeloplasty with a low complication rate. Much less common laparoscopic reconstructive urological procedures include ureteric re-implantation, Boari flap, urinary diversion and transuretero-ureterostomy. The results of these are encouraging.

Conclusions:

Laparoscopic pyeloplasty may be safely performed by either the transperitoneal or retroperitoneal routes with excellent results. It should be considered the “gold standard” for the management of UPJ obstruction, especially in those patients with significant hydronephrosis, renal impairment or a crossing vessel. Laparoscopic ureteric reimplantation, Boari flap, urinary diversion and transuretero-ureterostomy have been performed by experienced laparoscopic urologists with encouraging results.

Laparoscopic kidney transplantation: an initial experience

Laparoscopic donor nephrectomy has the advantages of less pain, early ambulation and shorter hospitalization compared to open donor nephrectomy. Kidney recipient surgery is, however, traditionally performed by open surgery. Our aim was to study feasibility and safety of laparoscopic kidney transplantation (LKT). After permission from Internal Review Board, LKT was performed in four patients. All kidneys were procured from deceased donors. Left kidney was used for LKT and transplanted in left iliac fossa while right kidney was used for standard open kidney transplantation (OKT). All transplantation procedures were performed successfully. Cold ischemia time varied between 4 h and 14 h. For LKT, mean time for anastomosis was 65 (range 62-72) min, mean operative time was 3.97 (range 3.5-5) h, mean blood loss was 131.25 mL (range 45-350) mL. Mean wound length was 7 cm in LKT group and 18.4 cm in OKT group. Delayed graft function was observed in one patient in each group. One patient was lost in OKT group due to posttransplant bacterial meningitis. At 6 months, both groups have comparable value of serum creatinine. In conclusion, LKT is technically feasible and safe. Long term outcome needs to be evaluated in a larger study.

Role of laparoscopy in reconstructive surgery

PURPOSE OF REVIEW

Despite increasing laparoscopic expertise in reconstructive surgery, open procedures still represent the gold standard. Robot-assisted techniques increasingly replace laparoscopy. However, laparoscopy is also developing: by improvement of ergonomics, new instruments, and techniques further reducing access trauma. We evaluated the actual role of laparoscopy focusing on main indications of urologic reconstructive surgery.

RECENT FINDINGS

We analysed the current literature (PubMed/Medline) concerning indications, perioperative results, complications, and long-term outcome of laparoscopy for pyeloplasty, ureteral reimplantation, stone surgery, management of vesico-vaginal fistula, sacrocolpopexy (including evidence level). For all indications, laparoscopy provides the advantages of less postoperative pain, blood loss, shorter convalescence, and minimal disfigurement. However, it requires expertise with endoscopic suturing. Most experience (N > 1000) exists with laparoscopic pyeloplasty and sacrocolpopexy which can be considered as valuable options (IIB). Concerning ureteral reimplantation and repair of vesico-vaginal fistula, only a limited number of cases were reported (N < 150) (III). Laparoscopic stone surgery may gain importance particularly in developing countries. Robot-assistance will definitively increase the application of laparoscopic techniques providing optimal ergonomics, whereas the role of single-port surgery will be limited.

SUMMARY

Laparoscopy will increasingly be used for reconstructive urologic surgery. This trend will be supported by the widespread use of the DaVinci device.

Outcome analysis of robotic pyeloplasty: a large single-centre experience

OBJECTIVE

To present our experience and outcomes of robot-assisted laparoscopic pyeloplasty (RALP) for pelvi-ureteric junction obstruction (PUJO).

PATIENTS AND METHODS

This was a prospective study of 85 consecutive patients who had RALP for PUJO at our institute from July 2006 to December 2008. The preoperative evaluation included intravenous urography (IVU) and diuretic renography. The type of pyeloplasty was decided based on the size of the pelves, presence of crossing vessel, level of ureteric insertion and the length of obstruction. All surgery was done through a transperitoneal approach using four or five ports. The follow-up comprised IVU and renal dynamic scintigraphy. Relevant data were collected and analysed for perioperative morbidity, complications and long-term functional outcomes.

RESULTS

In all, 86 RALPs were performed, including one bilateral, 41 right-sided and 43 left-sided cases. The mean operative time was 121 min, including an anastomosis time of 47 min. The mean estimated blood loss was 45 mL. The drain was removed within 48 h. The mean hospital stay was 2.5 days. Three patients had stents that migrated upwards, and prolonged drainage. The success rate was 97% (82/85) with a mean follow-up of 13.6 months.

CONCLUSIONS

RALP is highly effective for managing PUJO, with low morbidity, quick recovery and a durable success rate.

Laparoscopic kidney transplantation

We present the details of the first laparoscopic transplantation of a kidney from a living, related donor, performed April 16, 2009. Surgical and functional results were acceptable. Surgical time was 240 min (53 min for vascular suture), with blood loss of 300 cm(3) and a hospital stay of 14 d. Serum creatinine at discharge was 73 mmol/l. Laparoscopic kidney transplantation is a complex technique that requires previous experience in vascular and laparoscopic surgery. As with all novel procedures, technical modifications will be required to formalize its use and detailed comparisons will need to be made with standard procedures.

Postchemotherapy laparoscopic retroperitoneal lymph node dissection in nonseminomatous germ-cell tumor

BACKGROUND AND PURPOSE

Postchemotherapy retroperitoneal lymph node dissection (RPLND) remains essential in the management of metastatic testicular carcinoma and represents a surgical challenge. We determined to assess the feasibility and complications of laparoscopic RPLND in patients who were treated with induction chemotherapy for testis cancer.

PATIENTS AND METHODS

We performed a retrospective analysis of data that was prospectively recorded from 26 patients who underwent laparoscopic RPLND postplatinum-based chemotherapy between 2000 and 2006. The surgical technique consisted of excision of the residual mass plus unilateral template dissection. A transperitoneal technique was used in 24 patients, and an extraperitoneal approach was used in 2 patients. Operative details, perioperative morbidity data, and histologic findings were assessed for the study.

RESULTS

Primary pathologic evaluation of the testis tumor revealed pure embryonal carcinoma in 4 patients, teratocarcinoma in 1 patient, and mixed nonseminomatous germ-cell tumors in 21 patients. All patients had residual disease in the retroperitoneum on a preoperative CT scan, with a median size of 3.4 cm (range 2-6 cm). Procedures in three (11.5%) patients were converted to open surgery. Median operative time was 183 minutes (range 120-260 min). Median estimated blood loss was 400 mL (range 100-600 mL), and blood transfusion was necessary in one patient. Median hospital stay was 5 days (range 2-6 d). Median number of lymph nodes obtained on final histologic examination was 7 (range 4-13). Perioperative complications included eight lymphovascular and one intestinal. At a mean follow-up of 27 months (range 14-36 mos), no recurrences have been observed and no patient was lost to follow-up.

CONCLUSIONS

Postchemotherapy laparoscopic RPLND is technically feasible. The most frequent complications and causes of conversion are lymphovascular.

Embryonic natural orifice transumbilical endoscopic surgery (E-NOTES) for advanced reconstruction: initial experience

OBJECTIVES

Natural orifice transluminal endoscopic surgery comprises intraabdominal surgery performed by way of natural orifices (ie, vagina, mouth). In a similar manner, the umbilicus provides an embryonic natural orifice that permits intraabdominal access. We report on the feasibility of performing single-port advanced laparoscopic reconstructive surgery by way of the umbilicus in 6 patients. We propose the terminology embryonic-natural orifice transluminal endoscopic surgery (E-NOTES) for this novel surgical approach.

METHODS

Through a single 1.5- to 3-cm intraumbilical incision and a novel, single-access port, we performed laparoscopic bilateral single-session Anderson-Hynes pyeloplasty (2 patients, 4 procedures), ileal ureter (n = 1), and ureteroneocystostomy with a psoas hitch (n = 1). No extraumbilical skin incisions were used. A 2-mm Veress needle port, inserted through a skin needle puncture, was used to create the pneumoperitoneum and to selectively insert a needlescopic grasper to assist in suturing.

RESULTS

All procedures were successful without the need for any additional laparoscopic ports. For the 2 patients undergoing bilateral pyeloplasty (including patient repositioning) and the 1 patient each undergoing ileal ureter and psoas-hitch ureteroneocystostomy, the operating time was 4.5, 6, 5, and 3 hours, blood loss was 100, 50, 75, and 50 mL, and the hospital stay was 1, 2, 3, and 2 days, respectively. No intraoperative or postoperative complications developed.

CONCLUSIONS

To our knowledge, we present the initial experience with advanced laparoscopic reconstruction through a single intraumbilical port. Additional refinement of this technology could lead to wider incorporation of single-port laparoscopy in clinical practice. Embryonic-natural orifice transluminal endoscopic surgery appears to be a promising new approach for select indications.

Laparoscopic assisted dismembered pyeloplasty in children: intermediate results

To study the results of an innovative minimally invasive technique of performing dismembered pyeloplasty in children. Using 5 mm camera and 3 mm working ports, the ureteropelvic junction (UPJ) is mobilized by a transperitoneal laparoscopic technique. The UPJ is brought out through a tiny flank incision and a standard dismembered pyeloplasty is performed over a double J stent. Between October 2003 and January 2005, 13 children underwent laparoscopic assisted dismembered pyeloplasty. Indications, operative duration, hospital stay, preoperative and postoperative isotope renogram parameters were analyzed. The children were in the age range of 3 months to 6 years-three were right sided and ten were left sided. Only three were symptomatic while the remaining ten were detected to have UPJ obstruction during evaluation for antenatally detected hydronephrosis. Mean operative duration was 104.2 min (range 80-150 min) with no significant difference in the two patients with crossing vessels. Incision was smaller than 2 cms in all and the average postoperative hospital stay was 3.2 days (range 2-5 days). Follow-up ranging from 28 to 44 months showed reduction in hydronephrosis and improvement in renal function of all the operated units. Isotope renogram in only one patient showed equivocal slopes and prolonged half clearance times though no further surgical intervention was required. This technique has results comparable to that of open pyeloplasty and hence, maybe considered a good option for surgeons making the transition to laparoscopic pyeloplasty.

Transmesocolic Pyeloplasty: Experience of a Single Center

PURPOSE

We present our experience with dismembered left-sided pyeloplasty using a transmesocolic technique as a way to reduce operative time and facilitate repair by avoiding colon displacement.

PATIENTS AND METHODS

Between January 2004 and January 2006, a total of 11 transmesocolic laparoscopic pyeloplasties were performed by the same surgeon at our institution. The mean patient age was 41.6 years (range 14-65 years). Operative records and follow-up were reviewed.

RESULTS

A dismembered Anderson-Hynes pyeloplasty was carried out in nine patients (82%), while a Y-V plasty (9%) and a Fengerplasty (9%) were done in one patient each. Crossing vessels were observed in 8 patients (73%). A ureteral stent was left in all patients. The mean operative time was 88.6 minutes (range 60-125 minutes), and blood loss was minimal. Compared with classic transperitoneal laparoscopic left pyeloplasties, transmesocolic cases showed a significant reduction in operative time (88.6 minutes v 117 minutes; P < 0.05). There were no intraoperative complications or open conversions. The mean hospital stay was 2.1 days (range 2-3 days). Only 1 patient (9%) demonstrated narrowing of the anastomosis, which occurred 12 months after a Fengerplasty.

CONCLUSIONS

The transmesocolic approach to a dilated left pelvis enables a shorter operative time without increasing morbidity. More patients and longer follow-up are necessary to determine its effect on convalescence.

Robotic surgery for ureteropelvic junction obstruction

PURPOSE OF REVIEW

Robotic surgery for ureteropelvic junction obstruction is an evolving technique. We review the current literature related to this technique and discuss the current technique and outcomes of robotic pyeloplasty.

RECENT FINDINGS

Recent advances in robotic-assisted surgery have allowed the successful completion of complex reconstructive procedures in the pediatric population, including the robotic-assisted laparoscopic pyeloplasty. Robotic-assisted laparoscopic pyeloplasty can be performed by either a transperitoneal or a retroperitoneal approach. Overall, the procedure is safe, efficacious, and may have particular benefits over open surgery.

SUMMARY

The evolution of laparoscopic surgery in pediatric urology has been limited by the challenge of laparoscopic suturing. Robotic systems may offer the means to overcome this major impediment of laparoscopic surgery. The results of this review demonstrate that robotic-assisted laparoscopic pyeloplasty is safe, technically feasible, and efficacious in the pediatric population, and may be comparable to a contemporary series of open pyeloplasty. As the technology continues to evolve, the efficiency of the robotic system is likely to improve; however, the ultimate role of robotic-assisted or computer-assisted surgical systems remains unclear. To further determine the role of robotic systems in the management of ureteropelvic junction obstruction, rigorous prospective research is needed that combines surgical and technical outcomes with overall subjective or cosmetic outcome and economic analysis.

Retroperitoneoscopic pyeloplasty: Using reconstructive methods based on intraoperative findings

AIM

Reconstructive laparoscopic procedures have been recognized as a less invasive treatment than conventional open procedures. However, although the laparoscopic pyeloplasty has also been accepted as useful, few findings have been reported relevant to the retroperitoneal approach. To elucidate its effectiveness and safety, laparoscopic surgery via the retroperitoneal approach was examined in our institution. Furthermore, the importance of laparoscopic observation for ureteropelvic junction and urine passage ureteropelvic junction without indwelling ureteral stent.

METHODS

Between July 1998 and December 2004, 13 men and 15 women underwent laparoscopic retroperitoneal surgery for ureteropelvic junction obstruction. The mean patient age was 33.6 years (range: 13-70 years). Methods of repair were determined by intraoperative findings for the relationship between the ureteropelvic junction and surrounding vessels. An indwelling ureteral stent was removed before initiating laparoscopic operation to observe the relationship between ureteropelvic junction and aberrant vessels more precisely.

RESULTS

An aberrant renal vessel was found in 13 patients (46%). Dismembered pyeloplasty was carried out in 21 patients, Y-V plasty in five patients and Hellstrom technique in two patients. Ureteral transposition was not required in dismembered pyeloplasty cases. All patients achieved retroperitoneoscopic pyeloplasty without open conversion. The mean operative time was 272 min (range: 155-490 min). The mean estimated blood loss was 44 mL (range: 10-200 mL). No major complications were observed during the intraoperative period, but urinary tract infection occurred in two patients in the postoperative period. In all patients except one, obstruction was improved or resolved.

CONCLUSIONS

Laparoscopic retroperitoneal surgery is not only able to repair ureteropelvic junction obstruction, but can also be done safety and less invasively. We believe that laparoscopic observation without indwelling stent will contribute to a more appropriate choice of pyeloplasty.

Ureteral reimplantation for management of ureteral strictures: a retrospective comparison of laparoscopic and open techniques

OBJECTIVES

To compare the results of laparoscopic ureteral reimplantation with a previous series of open surgery.

MATERIALS AND METHODS

We compared ten patients who underwent laparoscopic vesicopsoas-hitch with (n=4) or without Boari-flap (n=6) technique for ureteral obstructions with ten patients treated by open ureteroneocystostomy for similar pathologies. Patient demographics, preoperative symptoms, radiologic imaging, and postoperative outcomes were analyzed. Postoperative observation time averaged 17 mo (range: 9-23) in the laparoscopic and 65 mo (range: 18-108) in the open group. Success was defined as relief of obstruction in postoperative imaging studies and relief of pain.

RESULTS

Mean length of stricture (28.5 vs. 25 mm) was comparable in both groups. In laparoscopy versus open surgery, mean operative time (228 vs. 187 min) was longer, blood loss (370 vs. 610 ml) and analgesic requirement (4.9 vs. 21.5mg) were significantly lower, and mean time to oral intake (1.5 vs. 2.9 d), hospital stay (9.2 vs. 19.1 d), and convalescence time (2.3 vs. 4.2 wk) were significantly shorter. Success rates yielded 10 of 10 after laparoscopy and 8 of 10 after open surgery. No intra- or postoperative major complications occurred in the laparoscopic series. After open surgery, two patients had major postoperative complications, including urinary extravasation with abdominal haematoma and anastomostic stricture, respectively.

CONCLUSIONS

Laparoscopic ureteroneocystostomy is feasible, providing functional outcomes comparable to open surgery while offering the advantages of a minimal invasive technique (e.g., less postoperative analgesics, and shorter hospitalization and convalescence). Nevertheless, it requires a high level of laparoscopic expertise and should be carried out only in specialist centers.

Laparoscopic transvesical urethrorectal fistula repair: A new technique

INTRODUCTION

Urethrorectal fistulas are rare, and several open operative approaches and techniques have been used in treatment. We report our preliminary experience with laparoscopic transvesical urethrorectal fistula repair after iatrogenic urethrorectal fistula. A 65-year-old man with insulin-dependent diabetes mellitus and peripheral vascular disease was hospitalized 6 months after transurethral resection of the prostate for benign prostatic hyperplasia with a recurrent urinary tract infection, fecaluria, and urine leakage from the rectum during voiding. Urethrocystoscopy revealed a urethrorectal fistula in the prostatic fossa. Primary conservative treatment failed.

TECHNICAL CONSIDERATIONS

The patient was placed in the lithotomy position, and the suprapubic tract was dilated to allow a 10-mm telescope. Carbon dioxide gas was used to distend the bladder (15 mm Hg, flow rate 3 L/min). Next, two 3-mm pediatric trocars were inserted under direct vision. The fistula was identified and the edge of the fistula excised. A running suture (3-0 PDS, RB needle) was used to close the fistula. Finally, a 16F Foley urethral catheter was passed under direct vision, followed by a suprapubic catheter. On postoperative day 12, retrograde cystography revealed no contrast leakage from the rectum. Follow-up after 3 months showed no recurrence of the fistula.

CONCLUSIONS

A transvesical laparoscopic technique might be useful for selective cases of urethrorectal fistula. Other methods of laparoscopic urethrorectal fistula repair have included bivalving of the bladder and omental interposition. The laparoscopic transvesical approach provides many advantages, including easy access and identification of the fistula tract, good surgical exposure, and minimal tissue manipulation.

Methods of training using pelvic trainers

During the past decade, the clinical applications of laparoscopic surgery in urology have been growing steadily. The laparoscopic version of various procedures, such as nephrectomy, is becoming the standard of care. This has led to an increased need for laparoscopic training in urology and focused the attention on the various modalities for laparoscopic skill acquisition. The common training modalities for laparoscopy are box trainers, animal and cadaveric laparoscopy, and virtual reality simulators. Each modality carries its own benefits to the practicing surgeon. The box trainers are the first practiced and are basic training simulators. They were first designed to help with training in basic laparoscopic skills and to assist surgeons in getting acquainted with instruments. However, these simple boxes are being upgraded constantly by tissue- and organ-specific models, allowing the surgeon to train in a convenient and cost-effective environment. This article describes the ways to work with box trainers, from basic skills to advanced laparoscopic tasks, and discusses the contribution of these trainers to real surgery as well as their role in defining criterion levels of surgical performance.

Steps to reduce operative time in laparoscopic dismembered pyeloplasty for moderate to large renal pelvis

OBJECTIVES

To describe the steps to reduce the operative time for laparoscopic dismembered pyeloplasty in ureteropelvic junction obstruction with moderate to large hydronephrosis.

METHODS

Using a transperitoneal approach and three ports, pyelotomy was done proximal to the ureteropelvic junction, and the ureter was spatulated laterally before dismembering it. Using the three suture line technique, the first suture was taken at the distal end of the spatulated ureter outside-in to the most dependent part of the pelvis inside-out and left as such. The second suture was taken at the proximal end of the ureter outside-in to the corresponding site at the posterior wall of the pelvis and then continued distally to complete the posterior suture line. A double-J stent was placed in an antegrade way. The anterior wall was completed with the first suture, taking continuous bites. The third suture line was used to close the pelvis. The operative time was recorded from placing the patient in the lateral position to the closure of the last port.

RESULTS

From January 2002 to January 2004, 24 patients underwent pyeloplasty performed by a single surgeon. The mean pelvic volume was 80.4 cm3 (range 70 to 110). The mean patient age was 24.5 years (range 5 to 57). The body mass index was 22.28 kg/m2 (range 20 to 25). The mean operative time was 120.4 minutes (range 80 to 160). Minor complications were noted in 3 patients. All patients showed improvement in symptoms and drainage after a mean follow-up of 17 months (range 10 to 28).

CONCLUSIONS

These steps helped to reduce the operative time to close to that of open surgery, making laparoscopic pyeloplasty a more desirable alternative.

Safety Profile and Complications of Transperitoneal Laparoscopic Pyeloplasty: A Critical Analysis

PURPOSE

To critically assess the safety profile and complications of the transperitoneal approach to laparoscopic pyeloplasty at our center.

PATIENTS AND METHODS

From January 2002 to January 2004, 92 patients with a mean age of 22.78 +/- 15.15 years (range 14 months-65 years) with primary (N = 90) or secondary (N = 2) ureteropelvic junction obstruction were treated by transperitoneal laparoscopic pyeloplasty and were evaluated for this study. Renal stones were present in eight patients. A double-J stent was placed antegrade in 50 patients and in the rest through cystoscopy. All patients were followed up clinically and by renal scan.

RESULTS

Of the 92 cases (93 renal units), 6 were converted to open pyeloplasty. Dismembered pyeloplasty was performed in 59, Fengerplasty in 8, and Foley Y-V-plasty in 20 units. A crossing vessel was present in 15 units (16.12%). The mean estimated blood loss was 63.6 mL (range, 30-200 mL). The mean operative time was 179.4 minutes (range 80-350 minutes). Overall, 17 patients (18.4%) had complications. Six patients had paralytic ileus and another six had increased drain output, which delayed the hospital stay to 7 days. Pyelonephritis and port-site hernia occurred in one patient each. Four patients required ancillary procedures: ureteroscopy for a migrating stent (1), percutaneous antegrade stenting (1), and SWL for residual stone (2). The mean hospital stay was 4 days (range 2-7 days). Of the 87 units (86 patients), 81 (93.3%) have shown improvement in symptoms and drainage pattern on renal scan at a mean followup of 12 (3-27) months.

CONCLUSION

The transperitoneal approach to pyeloplasty is safe and effective, although patients with large stone bulk and multiple stones should be considered for an alternative approach. The double-J stent should be checked carefully for proper placement. Hemostasis of the cut margin of the renal pelvis, watertight anastomosis, and adequate drainage should also be ensured.

Minimizing Minimally Invasive Surgery: The 5-mm Trocar Laparoscopic Pyeloplasty

BACKGROUND AND PURPOSE

Laparoscopic pyeloplasty has evolved into the procedure of choice when definitive repair of the obstructed ureteropelvic junction is contemplated. Its main advantage over the gold standard of open pyeloplasty is decreased morbidity. We have utilized only three 5-mm ports in our last 15 pyeloplasties in an effort to further reduce morbidity and improve acceptance by an often-younger patient population.

PATIENTS AND METHODS

Fifteen consecutive patients underwent laparoscopic transperitoneal pyeloplasty by the 5-mm port technique. Three trocars were utilized, two for the working instruments and one for a 5-mm telescope mounted on a voice-activated robotic arm (AESOP; Intuitive Surgical, Sunnyvale, CA). Three patients required an additional trocar for liver retraction. All patients underwent dismembered pyeloplasty and had indwelling double-pigtail stents placed for 4 to 6 weeks.

RESULTS

The mean operative time was 195 minutes (range 120-240 minutes). The average blood loss was 30 mL. None of our patients required open conversion. With a median follow-up of 10 months (range 3-15 months), all 15 patients have shown both subjective (freedom from symptoms) and objective (renal scan) improvement.

CONCLUSION

We believe our technique has further minimized the morbidity of laparoscopic pyeloplasty without compromising the outcome. The 5-mm trocars obviate fascial closure, decrease patient discomfort, and improve cosmesis. Furthermore, the use of the robotic arm eliminates the need for a surgical assistant and makes this an essentially "one-person" procedure.

Skill Assessment of Urological Laparoscopic Surgeons: Can Criterion Levels of Surgical Performance Be Determined Using the Pelvic Box Trainer?

OBJECTIVES

To correlate between surgeons' experience in urological laparoscopy and their performance of a set of laparoscopic tasks performed on a box trainer in the laparoscopic laboratory.

METHODS

44 urologists participated in this study. A self-administrated questionnaire enquired about their experience in laparoscopy and they were divided to 4 categories: no experience, minimal experience, basic and advanced laparoscopists. Tests consisted of 4 tasks: passage of a ligature, intracorporeal knotting, intracorporeal suturing, and cutting a carton circle out of a square. All tests were supervised and time was recorded for each of the tasks. Histograms were plotted showing the mean time for performance of each task in each experience group. The Kruskal-Wallis analysis of variance was used to assess statistical significance.

RESULTS

Seven participants had no previous experience in laparoscopy and 14 had minimal experience. 15 had basic experience and 8 were advanced laparoscopists. No difference in performance was found between the no experience and minimal experience group and they were united and defined as beginners. A significant difference in performance was noted between the beginners, basic and advanced groups, especially when comparing beginners to advanced. Criterion level values of surgical performance drawn from this data were highly discriminative with sensitivity of 71-85% and specificity of 74.2%-88%.

CONCLUSIONS

We were able to differentiate between various levels of laparoscopic skills among the participating urologists. Values drawn from such studies could be the basis of criterion level values for technical laparoscopic performance during training programs and before granting laparoscopic privileges to urologists.

Retroperitoneoscopic subcapsular nephrectomy for infective nonfunctioning kidney with dense perinephric adhesions

OBJECTIVE

To evaluate the feasibility and clinical efficacy of retroperitoneoscopic subcapsular nephrectomy for infective nonfunctioning kidneys with dense perinephric adhesions.

PATIENTS AND METHODS

Twelve patients underwent retroperitoneoscopic subcapsular nephrectomy; the operative duration, blood loss, intestinal functional recovery time, complications during surgery and efficacy were recorded. Dissociation and ligation of the renal pedicle was the most important step, at which the renal capsule was cut near the renal hilum using a harmonic scalpel, and the fatty tissue around the renal hilum dissected carefully. The renal pedicle was then ligated and divided using an endoscopic linear stapler-cutter after the renal pedicle tissues had been separated to an adequate thickness.

RESULTS

All 12 operations were successful and none required conversion to open surgery. The mean (SD, range) operative duration was 82.9 (22.3, 45-120) min, the blood loss 51.4 (12.2, 30-75) mL and the intestinal functional recovery time 12-48 h. There were no complications during or after the surgery, and in the follow-up of 1-15 months the short-term results were satisfactory.

CONCLUSION

Retroperitoneoscopic subcapsular nephrectomy can be used safely to remove an infected and heavily adhesive nonfunctioning kidney, with minimal trauma and blood loss, and with faster recovery than after an open subcapsular nephrectomy.

Laparoscopic-assisted upper pole ureterocalicostomy using renal inversion and autotransplantation

Despite various described methods of reconstruction after upper ureteral injury, many cases are complex and remain a surgical challenge. Careful preoperative evaluation and planning are crucial in the selection of the appropriate procedure, particularly in patients in whom preservation of the renal mass is imperative. We report a case of severe upper ureteral injury and subsequent fibrosis, with no usable renal pelvis and focal upper pole dilation, that was managed with renal inversion and upper pole ureterocalicostomy. The option of autotransplantation was provided by laparoscopic nephrectomy and ex vivo reconstruction, minimizing patient morbidity and maximizing a successful outcome. This case illustrates the expansion of laparoscopy from the mere extirpative to a role in complex reconstruction. To our knowledge, this reconstructive strategy has never been previously reported and may be applicable in a limited number of situations.