Outcome of Lymphatic- and Artery-Sparing Surgery for Pediatric Varicocoele

Two decades of experience with laparoscopic varicocele repair in children: Standardizing the technique

BACKGROUND

Controversy still exists about the indications and the gold standard approach for varicocele treatment in pediatric population.

OBJECTIVE

The authors report their 23 years of experience in laparoscopic varicocele repair in the pediatric population.

STUDY DESIGN

We retrospectively evaluated the data of 345 consecutive patients who underwent laparoscopic left varicocelectomy from January 1993 to December 2015. Average patient age was 12.5 years (range 8-17). Seven out of 345 patients (2%) had a recurrent varicocele, and five out of 345 patients (1.4%) had a varicocele on a single testis. In 335/345 patients (97.1%) we performed a Palomo procedure, and in 10/345 patients (2.9%) an artery-sparing Palomo procedure. After 2010, in 105/345 patients (30.4%) we performed a lymphatic sparing procedure using isosulfan blue injection preoperatively.

RESULTS

All procedures were completed in laparoscopy (Figure), without conversions or intraoperative complications. The average operative time was 17 min (range 14-45) for the Palomo procedure and 26 min (range 18-50) for artery-sparing Palomo. In 45/345 patients (13%) we performed additional procedures. We recorded 4/345 (1.3%) recurrences/persistences in patients undergoing Palomo, while we recorded 1/10 (10%) recurrence/persistence after artery-sparing Palomo. On 230 Palomo procedures performed in the pre-isosulfan blue era, we recorded 25 cases of hydrocele (10.8%), 13 of these were treated with transcrotal puncture and 12 required surgical operation. The last 105 patients undergoing isosulfan blue injection had no postoperative hydrocele. We also reported 10 other complications (I grade Clavien-Dindo) such as umbilical granuloma or instrumental problems.

DISCUSSION

Analyzing the international literature of the last 25 years, most papers focused on the minimally invasive treatment of pediatric varicocele. There are several reasons to perform laparoscopic repair of pediatric varicocele. First of all, it is technically easy to perform, the average operative time is very short, and it has excellent outcome in regard to varicocele persistence/recurrence. In addition it has a very low complication rate, and in particular adopting the intradartoic/intratesticular isosulfan blue injection before surgery we recorded no postoperative hydrocele.

CONCLUSION

On the basis of our 23 years of experience with varicocele repair, we clearly believe that laparoscopic Palomo lymphatic sparing varicocelectomy should be considered the standard of care for the treatment of pediatric patients with varicocele. Laparoscopic varicocelectomy is technically easy and quick to perform, painless, and scarless, with a recurrence rate of about 1%. The use of a preoperative injection of isosulfan blue completely eliminates postoperative hydrocele formation.

Technical standardization of laparoscopic lymphatic sparing varicocelectomy in children using isosulfan blue

PURPOSE

The lymphatic preservation to prevent hydrocele formation after laparoscopic varicocelectomy is essential. Lymphatic sparing procedures using scrotal injection give a rate of mapping failures of 20%-30%. The aim of the present study is to standardize the technique of injection to perform a lymphatic sparing procedure in case of laparoscopic varicocelectomy.

METHODS

We retrospectively evaluated 50 patients who underwent laparoscopic varicocelectomy from July 2010 to July 2013. Patients were divided into two groups: G1 (25 patients) those who underwent a classical isosulfan blue scrotal intra-dartos injection and G2 (25 patients) those who underwent the new standardized isosulfan blue scrotal intra-dartos/intra-testicular injection.

RESULTS

In G1 lymphatic vessels were identified as blue coloured in 19/25 of cases (76%), in G2 in 25/25 of cases (100%). The results were analyzed using test χ(2) with Yates' correction and there was a statistically significant difference (χ(2)=0.05,1) between G2 and G1. Postoperative hydrocele was noted in 2/6 patients of G1 in whom the lymphatic vessels were not identified.

CONCLUSIONS

Laparoscopic lymphatic sparing varicocelectomy is an effective procedure to adopt in children with varicocele. The intra-dartos/intra-testicular injection of isosulfan blue is significantly better than the previously described intra-dartos injection, permitting to identify lymphatic vessels in 100% of cases in our series. No allergy to isosulfan blue was reported in both groups.

Intravenous methylene blue venography during laparoscopic paediatric varicocelectomy

INTRODUCTION

One of the challenges of varicocele surgery is to prevent hydrocele formation while still ensuring success. Methylene blue has been used to identify and preserve lymphatic vessels, and venography has been a standard component of sclerotherapy and percutaneous retrograde techniques. The authors have combined both approaches during laparoscopic varicocelectomy and report their experience.

METHODS

A prospective study was performed of adolescents with idiopathic varicocele and spontaneous venous reflux on Doppler ultrasound. A pampiniform plexus vein was cannulated via scrotal incision before creating the pneumoperitoneum. A mixture of methylene blue and Omnipaque™ was injected into the pampiniform plexus with fluoroscopic screening. Laparoscopic selective vein ligation was then performed using 5mm endoscopic clips or a bipolar vessel sealing device such as Plasmakinetic™ or Ligasure™. Venography was repeated to confirm complete ligation of the internal testicular veins. Patients were followed-up at 3, 6, and 9 months post-surgery with clinical examination and Doppler ultrasound. Data are presented as median (interquartile range).

RESULTS

Twenty-four patients underwent laparoscopic selective vein ligation with venography and methylene blue injection. The median age was 14.7 (14.6-15.7) years. The recurrence rate was 12%. No patients developed a hydrocele. The length of surgery was 120 (100-126) minutes.

CONCLUSION

Intra-operative intra-venous methylene blue injection and venography helps to identify venous duplications of the internal testicular veins and enhances the success rate of laparoscopic selective vein ligation. This approach prevents hydrocele formation but has a 12% recurrence rate, which appears to be higher than some techniques described in the literature.

Blue patent lymphography prevents hydrocele after laparoscopic varicocelectomy: 10 years of experience

PURPOSE

Laparoscopic varicocelectomy according to the Palomo technique is the most common procedure adopted in children with testicular varicocele. This procedure involves the ligation of the internal spermatic cord and is associated with a 3%-5% incidence of recurrence and up to 30% incidence of hydroceles. We sought to determine the impact of lymphatic preservation on hydrocele formation and the success of varicocelectomy.

PATIENTS AND METHODS

We retrospectively evaluated 396 patients with a mean age of 13.2 years who underwent laparoscopic varicocelectomy. Patients were divided into two groups: those who underwent a lymphatic-sparing (LS) procedure using isosulfan blue scrotal intra-dartoic injection and those who underwent a non-LS (NLS) technique. The incidences of recurrence/persistence and postoperative hydrocele formation requiring surgery or aspiration were analyzed statistically using the chi-squared test.

RESULTS

Of 396 patients, 244 received a laparoscopic LS procedure, and 152 received an NLS operation. The LS patients in whom the lymphatic vessels were not identified (26/244 [10.6%]) were considered NLS repairs. The follow-up was at least 12 months. LS surgery (218 patients) was associated with a decreased incidence of postoperative hydrocele (0/218 [0%] versus 18/178 [10.1%]; chi-squared test=25.84, difference statistically significant). There was no significant difference in incidence of persistent or recurrent varicocele requiring reoperation following the initial procedure (5/218 [2.2%] versus 5/178 [2.8%]; chi-squared test=0.41, difference statistically not significant).

CONCLUSIONS

Laparoscopic LS varicocelectomy using isosulfan blue is preferable to laparoscopic Palomo repair that does not preserve the lymphatics. It has a significantly lower incidence of postoperative hydroceles and still maintains a low incidence of persistence/recurrence.

Lymphatic preservation in varicocele in the adolescent: does prior embolization limit spermatic dissection?

OBJECTIVE

One of the complications after complete section of the spermatic pedicle in the treatment of adolescent idiopathic varicocele is the formation of a scrotal lymphocele. This can be avoided by preserving lymphatic vessels using dye, but there is a risk that dissection may be complicated in patients who have previously undergone embolization. The aim of this study was to determine whether prior embolization limits spermatic dissection.

MATERIAL AND METHOD

We used lymphography with dye (Patent Blue) prior to surgery in order to mark and preserve the lymph vessels during spermatic section. This was done by laparoscopy with a single umbilical port.

RESULTS

We treated six patients aged 12.5-15 years (mean 13.12 years), two of whom had grade 2 varicoceles and four grade 3. Prior percutaneous embolization with metallic coils had been undertaken in all cases but had not been curative. Post-surgery controls were undertaken for a mean duration of 5 months without any lymphoceles appearing. No testicles were lost, nor did any other complication arise.

CONCLUSION

The presence of embolization material in the spermatic veins and perivascular fibrosis does not complicate surgery, enabling the single port laparoscopic technique to be undertaken.

Varicocele surgery: 10 years of experience in two pediatric surgical centers

AIM

The study was designed to compare recurrence rates and complications after laparoscopic versus open varicocele surgery in children.

SUBJECTS AND METHODS

A retrospective case-note review of all varicocele surgery over a 10-year period (April 1999-March 2009) in two pediatric surgical centers was performed. Multivariate analysis using logistic regression was performed using SPSS Statistics version 18 (SPSS Inc., Chicago, IL).

RESULTS

Thirty-seven patients had varicocele surgery during the study period. The median age at surgery was 14 years (range, 11-16 years). Most children had left-sided Grade 2 varicocele. Twenty-five (68%) primary procedures were laparoscopic (17 artery-sparing), and 12 (32%) procedures were open (9 artery-sparing). Six (16%) children had recurrence, and 6 (16%) had postoperative hydrocele. Recurrence rates after laparoscopic (16%) and open (17%) surgery were similar. Increasing age significantly decreased recurrence (odds ratio, 0.373; 95% confidence interval 0.161-0.862; P = .021). Although laparoscopy was associated with higher rates of postoperative hydrocele (odds ratio, 2.817; 95% confidence interval, 0.035-3.595; P = .380) and artery-sparing ligation was associated with higher rates of recurrence (odds ratio, 2.667; 95% confidence interval, 0.022-4.235; P = .787), these associations were not statistically significant.

CONCLUSIONS

The best results of varicocele surgery in terms of recurrence and postoperative hydrocele were achieved by open mass ligation; however, larger prospective studies are warranted.