Repair of a vesicouterine fistula following cesarean section

Introduction and hypothesis

Vesicouterine fistula is a rare complication of cesarean section. The aim of this video is to present a case report and to provide a tutorial on the surgical technique of delayed transvaginal repair of a high vesicouterine fistula that developed after cesarean section with manual removal of a morbidly adherent placenta.

Methods

A 43-year-old woman was referred to our unit for continuous urinary leakage 3 months after undergoing a cesarean section with manual removal of a morbidly adherent placenta. A vesicouterine fistula starting from the posterior bladder wall was identified. The surgical repair consisted of a transvaginal layered repair as shown in the video.

Results

No surgical complications were observed postoperatively. Two months after surgery the fistula had not recurred and the patient reported no urinary leakage.

Conclusions

Transvaginal layered primary repair of vesicouterine fistula was shown to be a safe and effective procedure for restoring continence. The vaginal route can be particularly attractive for urogynecological surgeons.

     

Vaginal repair of supratrigonal vesicovaginal fistulae—a 10-year review

Introduction and hypothesis

A 10-year retrospective study was done to determine the outcome of vaginal repair for supratrigonal vesicovaginal fistulae (VVF).

Methods

One hundred thirty-two urinary fistulae were managed from 2001 to 2011 which include 34 ureterovaginal and 98 lower urinary tract fistulae. Fifty-three out of 98 were supratrigonal VVF, 49 were of benign etiology and 4 were malignancy induced. Further analysis of 49 supratrigonal VVF of benign etiology revealed that 38 (77.5%) were of gynecological origin and 11 (22.5%) obstetric. Forty-three were primary and six were recurrent VVF. Thirty (61.2%) supratrigonal VVF were repaired vaginally and 19 (38.8 %) abdominally. Mean follow-up period was 51.7?months.

Results

The successful outcome for vaginal and abdominal repair was 86.7% and 100%, respectively (p value?=?0.26). Overall, 91.8% supratrigonal VVF were cured at our first attempt.

Conclusions

Majority of supratrigonal VVF can be approached vaginally with success rate comparable to abdominal approach.     

Management of ureterovaginal fistulae: an audit

Introduction and hypothesis

A retrospective study was done from January 2008 to January 2011 to analyze the outcome of ureterovaginal fistula management in relation to intervention mode.

Patients and methods

Eighteen patients who developed ureterovaginal fistulae following gynecological and obstetric procedures were studied. Ureteroscopic stenting was attempted in 17 cases, and one patient electively underwent ureteral reimplantation.

Results

Ureteroscopic stenting was successfully accomplished in 13 of 17 patients; four patients underwent ureteral reimplantation, as stenting was not feasible. The success rate was 100 % at a mean follow-up of 24.6 months, irrespective of modality.

Conclusion

The majority of iatrogenic ureterovaginal fistulae can be successfully managed by ureteroscopic stenting. Our study also suggests that ureteroscopic stenting should be considered as the primary mode of intervention in all cases. Ureteral reimplantation is required and remains practicable when stenting turns out to be impossible.     

Vaginal reconstruction with sigmoid colon in patients with congenital absence of vagina and menses retention: a report of treatment experience in 22 young women

Introduction and hypothesis

We evaluated the surgical feasibility, sexual satisfaction and complications of vaginal reconstruction with sigmoid colon in patients with congenital absence of vagina and menses retention.

Methods

Retrospective analysis of surgical techniques and long-term postoperative follow-up was performed for 22 patients who underwent vaginal reconstruction with sigmoid colon at a single hospital between 1977 and 2011 to treat congenital absence of vagina with menses retention.

Results

All patients achieved satisfactory sexual function after marriage. No patients experienced enterospastic abdominal pain during sexual intercourse. The neovaginas accommodated two or more fingers and had depths >10 cm. The mucous membranes were soft and flexible, and secretions of the sigmoid mucosa provided adequate and acceptable lubrication. No patient required vaginal stents, and none developed vaginal stenosis or reported pain with vaginal expansion. Fifteen of the 22 patients underwent hysterectomies due to cervical agenesis; seven retained their uterus and had onset of normal menses postoperatively. Two patients became pregnant 1 year after marriage; one achieved 38-week gestation, underwent cesarean section due to premature rupture of membranes, and delivered a healthy boy. The other experienced natural incomplete abortion and underwent curettage at her local hospital.

Conclusion

This study confirms that sigmoid colon vaginal reconstruction is a good choice for treating congenital absence of vagina and menses retention and results in the closest approximation to the physical function of a normal female vagina. Reproductive ability can be retained in many cases for patients with a well-developed uterus and cervix.     

Surgeon Elective Abdominal Aortic Aneurysm Repair Volume and Outcomes of Ruptured Abdominal Aortic Aneurysm Repair: A 12-year Nationwide Study

Background

The purpose of the present study was to examine the effects of surgeon elective abdominal aortic aneurysm repair volume on outcomes after ruptured abdominal aortic aneurysm (rAAA) repair.

Methods

A nationwide claims database was used to identify patients who underwent rAAA repair from 1998 to 2009. Surgeon elective open abdominal aortic aneurysm repair (EAR) volume was classified as low, medium, or high. Associations between surgeon EAR volume and in-hospital mortality, overall survival, and complications after open rAAA repair (RAR) were compared with multivariate analysis. Associations between surgeon elective endovascular abdominal aortic aneurysm repair (EER) volume and outcomes after endovascular rAAA repair (RER) were also analyzed.

Results

A total of 537 patients who underwent rAAA repair were identified, including 498 who underwent RAR and 39 who underwent RER. In-hospital mortality rates after RAR were 49, 38, and 24 % in the low, medium, and high EAR volume groups, respectively (p < 0.001). Patients in the low surgeon EAR volume group had higher in-hospital mortality than those in the high surgeon EAR volume group [odds ratio 3.39, 95 % confidence interval (CI) 1.52, 7.59; p = 0.003]. Patients in the low surgeon EAR volume group also had higher long-term mortality (hazard ratio 1.86, 95 % CI 1.21, 2.85; p = 0.005). There were no significant differences in complication rates among the surgeon EAR volume groups or in-hospital mortality after RER among the surgeon EER volume groups.

Conclusions

Surgeon EAR volume is associated with in-hospital mortality and long-term survival after RAR.     

Visualization of synthetic mesh utilizing optical coherence tomography

Introduction and hypothesis

Owing to the recent upsurge in adverse events reported after mesh-augmented pelvic organ prolapse (POP) repairs, our aim was to determine whether the location and depth of synthetic mesh can be measured postoperatively within the vaginal tissue microstructure using optical coherence tomography (OCT).

Methods

Seventeen patients with prior mesh-augmented repairs were recruited for participation. Patients were included if they had undergone an abdominal sacral colpopexy (ASC) or vaginal repair with mesh. Exclusion criteria were a postoperative period of <6 months, or the finding of mesh exposure on examination. OCT was used to image the vaginal wall at various POP-Q sites. If mesh was visualized, its location and depth was calculated and recorded.

Results

Ten patients underwent ASC and 7 patients had 8 transvaginal mesh repairs. Mesh was visualized in 16 of the 17 patients using OCT. In all ASC patients, mesh was imaged centrally at the posterior apex. In patients with transvaginal mesh in the anterior and/or posterior compartments, the mesh was visualized directly anterior and/or posterior to the apex respectively. Mean depth of the mesh in the ASC, anterior, and posterior groups was 60.9, 146.7, and 125.7 μm respectively. Mesh was visualized within the vaginal epithelial layer in all 16 patients despite the route of placement.

Conclusion

In this pilot study we found that OCT can be used to visualize polypropylene mesh within the vaginal wall following mesh-augmented prolapse repair. Regardless of abdominal versus vaginal placement, the mesh was identified within the vaginal epithelial layer.     

Mesh retraction correlates with vaginal pain and overactive bladder symptoms after anterior vaginal mesh repair

Introduction and hypothesis

The aim of the present study was to determine possible correlations between mesh retraction after anterior vaginal mesh repair and de novo stress urinary incontinence (SUI), overactive bladder (OAB), and vaginal pain symptoms.

Methods

One hundred and three women with symptomatic prolapse of the anterior vaginal wall, stages 3 and 4 based on the Pelvic Organ Prolapse Quantification (POP-Q) system, underwent Prolift anterior? implantation. At a 6-month follow-up, the patients were interviewed for de novo SUI, OAB, and vaginal pain, and underwent an introital/transvaginal ultrasound examination to measure the mesh length in the midsagittal plane.

Results

Mesh retraction was significantly larger in a subgroup of patients (n?=?20; 19.4 %) presenting de novo OAB symptoms on the follow-up assessment compared with those without this complication (5.0 cm vs. 4.3 cm; p?<?0.05). Mesh retraction was also significantly larger in a subgroup of patients (n?=?23; 22.3 %) reporting postoperative vaginal pain compared with the women who did not report any postoperative vaginal pain (5.3 cm vs. 4.2 cm; p?<?0.01). A significant correlation was found between mesh retraction and the severity of vaginal pain (R?=?0.4, p?<?0.01). Mesh retraction did not differ between patients with de novo SUI symptoms and those without this complication.

Conclusions

Mesh retraction assessed on ultrasound examination after anterior vaginal mesh repair may correlate with de novo OAB symptoms and vaginal pain.     

Laparoscopic transabdominal transvesical repair of supratrigonal vesicovaginal fistula

Introduction and hypothesis

We investigated the clinical efficacy of early laparoscopic repair of supratrigonal vesicovaginal fistula.

Methods

Laparoscopic repair of vesicovaginal fistula was performed and retrospectively studied in 18 consecutive patients who had clear indications for iatrogenic supratrigonal vesicovaginal fistula following hysterectomy or obstetric trauma during delivery. All patients underwent laparoscopic surgery via the transabdominal transvesical route. Wide mobilization of the bladder and vaginal wall, complete excision of devitalized tissue, tension-free closure, omental interposition, and efficient postoperative bladder drainage provides dependable support for definitive closure of the path. Success was defined as the disappearance of the fistula.

Results

Average patient age was 36.7 years; none required open conversion. Mean operative time was 135  (range 75–175) min. Mean duration of bladder catheterization was 15 (range 14–16) days. All patients were cured at the first attempt, with no surgical reintervention or recurrence at a mean follow-up of 22.7 (range 3–45) months.

Conclusions

We believe that laparoscopic repair of supratrigonal vesicovaginal fistula is an excellent alternative to the traditional abdominal approach and provides excellent results.     

Negative pressure wound therapy for children with an open abdomen

Purpose

The utility of negative pressure wound therapy (NPWT) in the management of adults with an open abdomen has been well documented. We reviewed our experience with NPWT in the management of infants and children with this condition.

Methods

The records of all children who were treated with NPWT for an open abdomen between March 2005 and September 2009 at a single children’s hospital were reviewed.

Results

Twenty-five subjects were identified. They included children who developed abdominal compartment syndrome after a laparotomy (n?=?12) or in whom the abdomen could not be safely closed at the time of laparotomy (n?=?13). NWPT was accomplished with the vacuum-assisted closure (VAC®) system in all patients. The median duration for NPWT was 4.5 days. In 16 subjects, the abdomen was closed successfully after NPWT. In 14 children, the abdominal wall fascia was successfully approximated, and two children underwent a patch abdominal closure. But nine subjects died before an abdominal closure could be attempted. Only two (12.5%) children developed enterocutaneous fistulae.

Conclusions

NPWT is a reliable tool for infants and children with an open abdomen. Wound management was facilitated and abdominal wall closure was ultimately achieved in all survivors. Enterocutaneous fistulae developed in two children, however, these were likely due to underlying bowel injury and would have occurred despite variations in management of the open abdomen.     

A prior cesarean section and incidence of obstetric anal sphincter injury

Introduction and hypothesis

Obstetric anal sphincter injury (OASIS) following birth may have serious, long-term effects on affected women, including fecal incontinence, despite primary repair.

Methods

This was a retrospective population-based register study. Women with OASIS grouped by order of vaginal delivery and prior cesarean section (CS) were compared separately with women without OASIS using logistic regression analysis. The aim was to assess an association between prior CS and incidence of OASIS across groups of women categorized according to singleton first, second, and third vaginal deliveries between 1997 and 2007 in Finland.

Results

The incidence of OASIS was 1.8 % at a first vaginal delivery after a prior CS compared with 1.0 % at a first vaginal delivery without prior CS. After adjustment prior CS was associated with a 1.42-fold risk of OASIS only at the first vaginal delivery, with no further significant risk after one or two previous vaginal deliveries. One centimeter increase in maternal height was associated with a 2 % decrease in OASIS incidence at the first vaginal delivery.

Conclusions

Prior CS is a significant risk factor for OASIS at the first vaginal delivery. This suggests that relative fetopelvic disproportion leading to CS for a first delivery also predisposes to OASIS at a first vaginal delivery since 40 % of the increased incidence of OASIS risk was explained by birthweight and 4 % by maternal height.     

Lower urinary tract injuries during hysterectomy in women with a history of two or more cesarean deliveries: a secondary analysis

Introduction and hypothesis

To evaluate lower urinary tract injuries in women with ≥2 prior cesarean deliveries (CD) undergoing benign hysterectomies.

Methods

This is a planned secondary analysis of all hysterectomies performed from 2000 to 2009 at Grady Memorial Hospital. Demographic, operative and postoperative data were reviewed. Women undergoing benign hysterectomies with ≥2 CD were compared with women with no prior CD. Categorical variables were analyzed using Chi-squared or Fisher’s exact test, while Student’s t test was used for continuous variables. Logistic regression was used for multivariate analysis.

Results

2,214 women met the inclusion criteria (284 with ≥2 CD, 1,930 with no CD). The proportion of women having vaginal hysterectomy, abdominal hysterectomy, and laparoscopically assisted vaginal hysterectomy were 38 %, 53 %, and 9 % respectively. Women with multiple CD had greater blood loss and longer operative times. They also required more transfusions (23 % vs 15 %, P?=?0.001) and developed more abdominal wounds (6 % vs 3 %, P?=?0.002) or urinary infections (6 % vs 3 %, P?=?0.03). Women with ≥2 CD were at greater risk of incidental cystotomies (OR: 8.55, 95 % CI: 3.98–18.36).

Conclusions

Multiple prior cesarean deliveries increase a woman’s risk of cystotomy during hysterectomy. They also require more transfusions and develop more urinary or abdominal wound infections.     

Does concomitant vaginal prolapse repair affect the outcomes of the transobturator tape procedure in the long term?

Introduction and hypothesis

Little information is available on the effects of concomitant vaginal prolapse repair on the outcomes of the transobturator tape (TOT) procedure. The purpose of this study is to assess the results and complications of TOT when combined with vaginal prolapse repair with a long-term follow-up.

Methods

We conducted a retrospective cohort study of 232 female patients who underwent the TOT procedure at two institutions. There were two groups: group 1 consisted of patients who had undergone TOT alone and group 2 consisted of patients who had undergone concomitant vaginal prolapse repair. The outcomes were analyzed considering four postoperative parameters: objective cure, subjective cure, resolution of urgency urinary incontinence (UUI), and patient satisfaction. The mean follow-up was 66.3 months (range 60–85).

Results

A total of 117 patients in group 1 and 104 patients in group 2 were documented in this study. The subjective and objective cure rates were 87.17 %, 64.95 % in group 1 and 89.42 %, 68.26 % in group 2. Patient satisfaction rates (visual analog scale [VAS] score ≥80) were 71.79 and 83.65 % in groups 1 and 2 respectively (p?=?0.035). Complications were reported according to the Clavien–Dindo classification with grade I 7.7 %, grade II 69.2 %, grade IIIa 7.7 %, and grade IIIb 15.4 %, and grade I 9.5 %, grade II 47.6 %, grade IIIa 42.8 %, and grade IIIb 0 % in groups 1 and 2 respectively.

Conclusions

Concomitant vaginal prolapse repair with TOT does not have any negative effects on continence outcomes; on the contrary, it increases patient satisfaction.     

Risk factors for lower urinary tract injury at the time of hysterectomy for benign reasons

Objectives

To identify risk factors associated with lower urinary tract injury at the time of performing hysterectomy for benign indications.

Methods

We conducted a multi-center case–control study of women undergoing hysterectomy for benign disease. Cases were identified via ICD-9 codes for lower urinary tract injury at the time of hysterectomy from 2007 to 2011: controls were two subsequent hysterectomies following the index case in the same institution that did not have lower urinary tract injury. Logistic regression was used to perform univariate and multivariate comparisons between groups.

Results

At 7 centers, 135 cases and 270 controls were identified. Cases comprised 118 bladder injuries and 25 ureteral injuries; 8 women had both bladder and ureteral injury. Bladder injury was associated with a history of prior cesarean section OR 2.9 (95 % CI 1.7–5), surgery by a general obstetrician and gynecologist OR 2.4 (95 % CI 1.2–5.2), and total abdominal hysterectomy OR1.9 (95%CI 1.06–3.4). Ureteral injury was more likely among women who underwent laparoscopic-assisted vaginal hysterectomy (LAVH) OR 10.4 (95%CI 2.3–46.6) and total abdominal hysterectomy (TAH) OR 4.7 (95 % CI 1.4–15.6).

Conclusion

Bladder injury at the time of benign hysterectomy is associated with a prior history of Cesarean section and TAH as well as surgery by generalist OB-GYN; ureteral injury is associated with LAVH and TAH.     

Abdominal wall fibromatosis associated with previous laparoscopic hernia repair

Cases

Two cases of desmoid-type fibromatosis developing after laparoscopic hernia repair are described: one in a young male 3 years after laparoscopic umbilical hernia repair and the other in a young female 1 year after laparoscopic incisional hernia repair.

Findings

The male patient presented with a slowly enlarging non-tender firm abdominal wall mass; the female patient had similar findings. Excision biopsy in the male and core biopsy in the female were consistent with fibromatosis.

Treatment

The young male patient underwent resection of the fibromatosis, and the female patient has been managed conservatively.

Relevance to current knowledge

These are the first documented cases of fibromatosis developing after laparoscopic hernia surgery. Whilst the safety of hernia meshes has been assessed in animal studies, it may be that more detailed study of intraperitoneal placement of these meshes is required.     

Ureterovaginal fistula: a case series

Introduction and hypothesis

We describe the presentation, diagnosis, and management of ureterovaginal fistula over a 7-year period at a tertiary care center.

Methods

A retrospective review of ureterovaginal fistula cases between 2003 and 2011 was performed. Demographic information, antecedent event, symptoms, diagnostic modalities, and management strategies were reviewed.

Results

Nineteen ureterovaginal fistulas were identified during the 7-year study period. One fistula followed a repeat cesarean section and 18 fistulas followed a hysterectomy (9 total abdominal, 6 total laparoscopic, 3 vaginal hysterectomies). Ureteral injuries were not recognized in any of the patients at the time of index surgery. Computed tomography (CT) urography was the most commonly utilized diagnostic modality (58 %). Primary non-surgical management with ureteral stents was attempted and successful in 5 out of 7 cases (71 %). There were 14 total surgical repairs, including 2 cases in which stents were successfully placed, but the fistula persisted, and 6 additional cases where attempted stent placement failed. Surgical repair consisted of 10 ureteroneocystostomies performed via laparotomy and 4 performed laparoscopically, 3 of which were robotically assisted.

Conclusions

Despite being uncommon, ureterovaginal fistula should remain in the differential diagnosis of new post-operative urinary incontinence after gynecological surgery. Conservative management with ureteral stent appears to be the best initial approach in selected patients, with a success rate of 71 %. Minimally invasive approaches to performing ureteroneocystostomy have high success rates, comparable to those of open surgical repair.     

Umbilical hernia management during liver transplantation

Purpose

Patients with liver cirrhosis scheduled for liver transplantation often present with a concurrent umbilical hernia. Optimal management of these patients is not clear. The objective of this study was to compare the outcomes of patients who underwent umbilical hernia correction during liver transplantation through a separate infra-umbilical incision with those who underwent correction through the same incision used to perform the liver transplantation.

Methods

In the period between 1990 and 2011, all 27 patients with umbilical hernia and liver cirrhosis who underwent hernia correction during liver transplantation were identified in our hospital database. In 17 cases, umbilical hernia repair was performed through a separate infra-umbilical incision (separate incision group) and 10 were corrected from within the abdominal cavity without a separate incision (same incision group). Six patients died during follow-up; no deaths were attributable to intraoperative umbilical hernia repair. All 21 patients who were alive visited the outpatient clinic to detect recurrent umbilical hernia.

Results

One recurrent umbilical hernia was diagnosed in the separate incision group (6 %) and four (40 %) in the same incision group (p = 0.047). Two patients in the same incision group required repair of the recurrent umbilical hernia; one of whom underwent emergency surgery for bowel incarceration. The one recurrent hernia in the separate incision group was corrected electively.

Conclusion

In the event of liver transplantation, umbilical hernia repair through a separate infra-umbilical incision is preferred over correction through the same incision used to perform the transplantation.     

Four-defect repair in women with symptomatic anterior compartment prolapse: a large cohort study

Introduction and hypothesis

We aimed to collect long-term follow-up data and report on both objective and subjective outcome, including morbidity, reinterventions, and sexual function following four-defect repair (FDR) as surgical correction of symptomatic anterior vaginal wall prolapse with or without stress urinary incontinence (SUI).

Methods

Consecutive patients who underwent FDR between 1999 and 2005 were included in this study. We performed a retrospective analysis to evaluate anatomical and functional outcome by reviewing medical charts and sending validated questionnaires (Urogenital Distress Inventory and Defecatory Distress Inventory) to all patients. We also sent a self-developed, nonvalidated questionnaire to assess sexual function and inform the patient about reinterventions for pelvic floor dysfunction.

Results

Two hundred and twenty-nine (60 %) of the 381 patients who underwent FDR participated. At a median follow-up of 40 months (range 5–88), 21 % of patients reported bothersome prolapse symptoms, and 11 % reported bothersome SUI. Temporary postoperative urinary retention occurred in 23 %. During follow-up, posterior vaginal wall prolapse was observed in 14 % of patients. Overall surgical reintervention rates were 15 % and 4 % for (all types of) pelvic organ prolapse and SUI, respectively; dyspareunia was reported by 30 %.

Conclusions

Functional cure rates of FDR as surgical treatment for anterior vaginal wall prolapse with or without SUI are satisfying. Nevertheless, given the negative side effects of FDR (urinary retention, high reintervention rate for posterior vaginal wall prolapse, high risk of sexual dysfunction), we question the superiority of FDR over standard anterior colporrhaphy in patients with anterior vaginal wall prolapse only.     

Total transvaginal mesh (TVM) technique for treatment of pelvic organ prolapse: a 3-year prospective follow-up study

Introduction and hypothesis

To evaluate clinical outcomes at 3 years following total transvaginal mesh (TVM) technique to treat vaginal prolapse.

Methods

Prospective, observational study in patients with prolapse ≥stage II. Success was defined as POP-Q-stage 0-I and absence of surgical re-intervention for prolapse. Secondary outcome measures were: quality of life (QOL), prolapse-specific inventory (PSI), impact on sexual activity and complications.

Results

Ninety women underwent TVM repair, 72 a hysterectomy. Anatomical failure rate was 20.0% at 3 years. Three patients required re-intervention for prolapse. Improvements in QOL- and PSI-scores were observed at 1 and 3 years. Vaginal mesh extrusion occurred in 14.4% patients. After 3 years, 4.7% asymptomatic extrusions remained present. Of 61 sexually active women at baseline, a significant number of patients (41%) ceased sexual activity by 3 years; de novo dyspareunia was reported by 8.8%. One vesico-vaginal fistula resolved after surgery.

Conclusion

Medium-term results demonstrate that the TVM technique provides a durable prolapse repair.     

Direct and Recurrent Inguinal Hernias Are Associated with Ventral Hernia Repair: A Database Study

Background

A systemically altered connective tissue metabolism has been demonstrated in patients with abdominal wall hernias. The most pronounced connective tissue changes are found in patients with direct or recurrent inguinal hernias as opposed to patients with indirect inguinal hernias. The aim of the present study was to assess whether direct or recurrent inguinal hernias are associated with an elevated rate of ventral hernia surgery.

Methods

In the nationwide Danish Hernia Database, a cohort of 92,457 patients operated on for inguinal hernias was recorded from January 1998 until June 2010. Eight-hundred forty-three (0.91 %) of these patients underwent a ventral hernia operation between January 2007 and June 2010. A multivariate logistic regression analysis was applied to assess an association between inguinal and ventral hernia repair.

Results

Direct (Odds Ratio [OR] = 1.28 [95 % CI, 1.08–1.51]) and recurrent (OR = 1.76, [95 % CI, 1.39–2.23]) inguinal hernias were significantly associated with ventral hernia repair after adjustment for age, gender, and surgical approach (open or laparoscopic).

Conclusions

Patients with direct and recurrent inguinal herniation are more prone to ventral hernia repair than patients with indirect inguinal herniation. This is the first study to show that herniogenesis is associated with type of inguinal hernia.