A systematic review and meta-analysis of the role of radiology in the diagnosis of occult inguinal hernia

Management of groin hernias detected by ultrasound: a comprehensive study

INTRODUCTION

It remains unclear whether ultrasound-detected hernias (UDH) are the sole cause of pain in patients with groin pain, and clinical examination plays a complementary role. The aim of our study is to describe the evolution of patients with ultrasound detected hernias in terms of development of groin hernia detected by physical examination, pain resolution, and alternative diagnosis.

METHODS

An observational, descriptive, longitudinal study of a prospective case series including patients with UDH with groin pain. Follow-up evaluation included the following: follow-up time, side of pain, its evolution, time to resolution, clinical hernia (CH) development, need for surgical resolution, and the presence of postoperative pain and alternative diagnosis.

RESULTS

A total of 98 patients with complete follow-up for groin pain and UDH were included. Seven patients (7.1%) developed CH, with a median time to conversion of 8 months. Four of them (4.1% of the total and 57.1% of the ones who developed CH) ended up having surgery. Fifty-three patients (54.1%) resolved their pain in a median time to resolution of 2 months, and 75.5% of them did so spontaneously. The majority of patients with persistent pain (73.3%) were able to lead a normal life and only reported pain with movement. More than half of the patients (53.3%) reached a specific diagnosis. Among those patients who did not develop CH, 39.6% reached an alternative diagnosis, the majority being musculoskeletal pathologies.

CONCLUSION

Watchful waiting and a thorough search for other alternative causes of groin pain in UDH and clinically occult hernia would be a reasonable option.

Peristalsis in an unusual place-The diagnostic utility of point-of-care ultrasound: A case report

Complications related to inguinal hernias are commonly encountered in medicine. Clinical presentation can vary, and although diagnosis can often be made during physical examination, point-of-care ultrasound (POCUS) can be useful in cases where the diagnosis is unclear. Our case underscores to clinicians the utility of POCUS in diagnosing inguinal hernias.

ACR Appropriateness Criteria® Hernia

Abdominopelvic hernias are common clinical entities composed of a wide variety of congenital, traumatic, and iatrogenic etiologies. Any weakness in the body wall may result in hernia of cavity contents with concomitant risks of morbidity and mortality. Presentations may be specific, palpable body wall mass/bulge, or vague, nonspecific pain through bowel obstruction. This document focuses on initial imaging of the adult population with signs of symptoms prompting suspicion of abdominopelvic hernia. Imaging of the abdomen and pelvis to evaluate defects is essential for prompt diagnosis and treatment. Often CT and ultrasound are the first-line modalities to quickly evaluate the abdomen and pelvis, providing for accurate diagnoses and management of patients. MRI protocols may be useful as first-line imaging studies, especially in patients with orthopedic instrumentation. Although often performed, abdominal radiographs and fluorographic procedures may provide indirect evidence of hernias but are usually not indicated for initial diagnosis of hernia. The ACR Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision process support the systematic analysis of the medical literature from peer-reviewed journals. Established methodology principles such as Grading of Recommendations Assessment, Development, and Evaluation or GRADE are adapted to evaluate the evidence. The RAND/UCLA Appropriateness Method User Manual provides the methodology to determine the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances in which peer-reviewed literature is lacking or equivocal, experts may be the primary evidentiary source available to formulate a recommendation.

How Often Occult Inguinal or Spigelian Hernias Detected During Laparoscopy of Other Reasons Are Later Operated?

BACKGROUND

The incidence of occult inguinal or Spigelian hernias found in other laparoscopies is seldom studied and their development to symptomatic hernias is unknown.

MATERIALS AND METHODS

The orifices of all inguinal and Spigelian hernias at linea semilunaris were carefully recorded prospectively in the laparoscopic surgery during the years 2003-2004 (104 cholecystectomies, 55 fundoplications, 36 diagnostic, and 6 miscellaneous). The patients were followed up over 15 years to find out how often the detected occult hernias at index laparoscopy become later symptomatic and were repaired.

RESULTS

The index laparoscopic operation was performed to 201 patients with a mean age of 53±14 years. The overall frequency of unexpected hernias was 21% including 36 (18%) inguinal hernias, 5 (2.5%) Spigelian hernias, and 2 (1.0%) ventral hernias. At the index laparoscopy, only 5/201 inguinal and 2 Spigelian hernioplasties were concomitantly undertaken. After 15 years, data of 169 patients were available and new hernia repairs were performed only in 8 (4.7%) patients (2 inguinal, 4 umbilical, and 2 ventral hernias).

CONCLUSIONS

Asymptomatic occult hernias detected during laparoscopic surgery of other reason evolve very seldom (<5%) to symptomatic and need to be repaired.

The sensitivity of ultrasound in the clinical diagnosis of inguinal hernias in adults: a comparative study

OBJECTIVE

Ultrasonography (US) is a non-invasive, non-ionizing radiation modality highly successful at diagnosing inguinal hernia. The aim of this study is to demonstrate the accuracy of ultrasound in evaluating defects of fascia in inguinal hernias and compare with surgical findings.

MATERIAL AND METHODS

A total of 33 patients with a sonographic diagnosis of an inguinal hernia are included to study. After US, all patients underwent a blinded surgery and the surgical findings are compared with the US results.

RESULTS

The sensitivity of US was found to be 100% and 80% for indirect and direct types, respectively. The mean size of the defect was found to be 22 mm (max: 70 mm, min: 6 mm) with US; and 27 mm (max: 50 mm, min: 4 mm) at surgery. The size of defects at US and in surgery were correlated with each other (p = 0.001).

Point-of Care Ultrasound in Stratifying Clinically Evolving Inguinal and Femoral Hernias

BACKGROUND

Point-of-care ultrasound (POCUS) is an optimal imaging modality for the risk stratification of patients presenting to the emergency department (ED) with inguinal and femoral hernias, allowing for better evaluation of clinical presentations and guiding appropriate treatment. The lack of ultrasound classification for inguinal and femoral hernias has led to inconsistent use and often underuse of POCUS in this patient population. Several groin hernia classifications are available, but most are complex and often targeted toward surgical management.

OBJECTIVES

The objective of this study is to review the use of POCUS in the diagnosis of inguinal and femoral hernias, providing a synopsis of critical ultrasound findings in determining signs of incarceration, strangulation, and small bowel obstruction, and suggesting a simple and educative sonographic classification for inguinal or femoral hernias.

DISCUSSION

POCUS can reliably confirm the presence of groin hernias and can uniquely identify specific ultrasound findings predictive of complications, such as aperistaltic nonreducible bowel loops, free fluid in the hernia sac, and lack of color doppler in the entrapped mesentery and bowel walls. POCUS can also aid in determining the presence of small bowel obstruction by detecting dilated loops of bowel >25 mm adjacent and proximal to the hernia site.

CONCLUSIONS

In the ED, POCUS can confirm the presence of a hernia sac and identify and predict surgical emergencies, such as bowel incarceration or strangulation, which are the most important elements in the management of patients presenting with possible inguinal or femoral hernias.

Inguinal Hernia in Nonhuman Primates: From Asymptomatic to Life-Threatening Events

In this study, a review of available data and literature on the epidemiology and anamnesis of inguinal hernias in nonhuman primates, as well as on their clinical evaluation and surgical management, was conducted. Inguinal hernias are assumed to be relatively common in male nonhuman primates. Clinical signs are usually limited to a visible or palpable mass in the groin region without pain or systemic illness. Most hernias contain omentum. Careful monitoring is an acceptable treatment option for those animals. Size, the danger of incarceration, and the presence of strangulation are important factors when considering surgical repair. A strangulated inguinal hernia is an emergency, requiring prompt surgery to avoid tissue necrosis and death. Imaging techniques, as well as computed tomography (CT), ultrasonography, and magnetic resonance imaging (MRI), provide information about the anatomical characteristics of the suspected region, allowing for a diagnosis and treatment. An inguinal hernia repair can be performed with either open surgery or laparoscopic surgery. The hernia repair can be achieved by mesh or suture. Decisions regarding which repair technique to use depend on the surgeon′s skill level and preference. Complication and recurrence rates are generally low. The most common postsurgical complication is a recurrence of the hernia. Contraceptive measures are not indicated in breeders, as there is no known hereditary component, and the presence of hernia does not appear to affect fertility, nor does it predispose to occurrence, recurrence, or incarceration.

Large intestine as content of congenital inguinal hernia: A case report of intestinal obstruction

Introduction and importance

Hernias containing appendix, caecum and transverse colon are uncommon in contrast with usual inguinal hernias containing small intestine. The patient usually presents with inguinoscrotal swelling.

Case presentation

We present a case of a 2 months old male child presented with inguinoscrotal swelling, vomiting with abdominal distention. On Ultrasonography (USG) of the scrotum, protrusion of the abdominal cavity contents through the right inguinal canal into the scrotum of approximately 3.4 cm × 0.7 cm was found which indicates right inguinal hernia. On the opening of the hernia sac during surgical management, the appendix, caecum and transverse colon were lying inside the hernia sac. Open Herniotomy was performed and the abdomen was closed in layers. Postoperative period of the patient was uneventful.

Discussion

Congenital inguinal hernia in the child occurs mostly due to persistent processus vaginalis. History and clinical examination reveals the appearance of lump in the inguinal region or scrotum. Preoperative Ultrasonography can be used to supplement the physical examination and increase the accuracy of its diagnosis. Although the laparoscopic approach is increasingly used nowadays, open hernia repair is preferred in young children.

Conclusion

Appendix, caecum and transverse colon are unusual contents of an inguinal hernia. Open herniotomy combined with relieving of the intestinal obstruction is the treatment of choice in young children.

Inguinal Hernia Mesh Repair: The Factors to Consider When Deciding Between Open Versus Laparoscopic Repair

Inguinal hernia repair is one of the most commonly performed surgical procedures worldwide. An inguinal hernia occurs due to a defect in the abdominal wall, which allows the abdominal contents to pass through it. Although the placement of mesh over the defect is the gold standard to close the defect, there are various approaches to achieving it, out of which two of the most widely accepted techniques are laparoscopic inguinal hernia repair (LIHR) and open inguinal hernia repair (OIHR). However, the approach of choice widely fluctuates with regards to various factors such as patient history, type of hernias, and surgeons' preference. It is imperative to understand the variations in outcomes of different approaches and how best they fit an individual patient in deciding the technique to be undertaken. This article has reviewed many studies and compared the two techniques in terms of chronic pain, the time required to return to activity, rate of recurrence, and cost-effectiveness.

Modified Halsted's operation for inguinal hernia repair: A new technique

Background

Inguinal hernia is a frequent problem presented to surgical clinic in Iraq. Surgical treatment options for inguinal hernia are numerous, selecting the appropriate method or technique depends on different factors.

Aim of study

To find a new technique for open inguinal hernia repair with no recurrence even in recurrent cases, without major complications during or after surgery, and can be used even by new surgeons with little experience.

Patients & methods

A retrospective cross sectional study conducted in the Medical City teaching hospital and Private Hospitals in Baghdad, during the period from January 1, 2000, to December 30, 2016 on convenient sample of 408 Iraqi patients with inguinal hernia. The patients were treated by modified Halsted's technique by open surgery applying polypropylene mesh. The patients were followed up through frequent visits and phone calls to assess the recurrence and complications.

Results

No recurrence of inguinal hernia was reported after 5-10 years follow up, while 94.9% of patients reported postoperative complications commonly oedema of spermatic cord. There was a highly significant association between male gender hernia patients and post Modified Halsted operation complications (p < 0.001). A highly significant association was observed between direct hernia and post Modified Halsted operation complications (p < 0.001). The significant risk factors related to complications were anemia and collagen disease.

Conclusions

The modified Halsted's operation for inguinal hernia repair is effective in treatment of inguinal hernia with low recurrence and complications rate.

The Value of Preoperative Ultrasound in the Detection of Contralateral Occult Inguinal Hernia in the Treatment of Symptomatic Inguinal Hernia

BACKGROUND

The true incidence of contralateral occult inguinal hernia (OIH) is a debate. The repair of contralateral OIH in the treatment context of clinical symptomatic unilateral inguinal hernia (IH) is controversial. This study aimed to assess the effect and clinical benefit of preoperative ultrasound (US) in the diagnosis of contralateral OIH performed before surgery.

METHODS

The retrospective data of 155 consecutive male patients who underwent IH repair between January 2014 and January 2020 were analyzed. The surgical procedures for IH and the clinical outcomes of the US were evaluated.

RESULTS

Of 155 patients, 29 (18.7%) presented with bilateral IH. Preoperative US was performed in 73 cases of clinical unilateral IH (n=126), and 30 (23.8%) patients were found to have a contralateral OIH. The totally extrapreperitoneal (TEP) or Lichtenstein repair was conducted. Bilateral IH repair was proposed for all, but only 28 agreed and underwent bilateral repair. Patients with clinically bilateral hernia had more complications compared with patients diagnosed to have occult contralateral IH after the US (n=3 vs. n=0). In the overall group, the TEP procedure resulted in shorter hospital stay (P=0.001) and less pain (P=0.021).

CONCLUSIONS

The preoperative US may be recommended to assess the presence of a contralateral OIH as it is a noninvasive, radiation-free, widely available, relatively cheap diagnostic method. The preoperative US may change the surgical approach in up to 1/4 patients with a clinical unilateral IH. Either Lichtenstein repair or TEP repair can be performed with an acceptable complication rate in the case of OIH.

Unnecessary use of radiology studies in the diagnosis of inguinal hernias: a retrospective cohort study

BACKGROUND

The diagnosis of inguinal hernias is predominantly based on physical exam, although imaging may be used in select cases. The objective of this study was to determine the frequency of unnecessary imaging used in the diagnosis of inguinal hernias.

METHODS

Patients who underwent elective inguinal hernia repair at a large academic health system in the U.S. from 2010 to 2017 were included. Within this cohort, we identified patients who received imaging 6 months prior to surgery. Through chart review of physical exam findings and imaging indications, we categorized patients into four imaging categories: unrelated, necessary, unnecessary, and borderline. Multivariable logistic regression analysis was used to identify factors associated with receipt of unnecessary imaging.

RESULTS

Of 2162 patients who underwent inguinal hernia surgery, 249 patients had related imaging studies 6 months prior to surgery. 47.0% of patients received unnecessary imaging. 66.9% and 33.1% of unnecessary studies were ultrasounds and CT scans, respectively. 24.5% of patients had necessary studies, while 28.5% had studies with borderline indications. On multivariable analysis, having a BMI between 25.0 and 29.9 kg/m2 was associated with receipt of unnecessary studies. Primary care providers and ED physicians were more likely to order unnecessary imaging.

CONCLUSIONS

Nearly 50% of all patients who receive any related imaging prior to surgery had potentially unnecessary diagnostic radiology studies. This not only exposes patients to avoidable risks, but also places a significant economic burden on patients and our already-strained health system.

Reduction en masse of inguinal hernia after self-reduction: a case report

BACKGROUND

Reduction en mass (REM) is one of the rare complications of inguinal hernia reduction. Although REM can be detected on the basis of specific computed tomography (CT) scan findings, many radiologists are not familiar with its radiological appearance because of the scarcity of this complication, which may cause a delay in diagnosis.

CASE PRESENTATION

The patient reported in this article was a 50-year-old Persian man with a history of inguinal hernia, who had been referred with the periumbilical pain that radiated to the right lower quadrant and developed following hernia replacement by the patient himself. REM diagnosis was based on clinical examination and CT scan findings, and surgical treatment was performed by the Lichtenstein repair and mesh implantation.

CONCLUSIONS

Although REM usually occurs after reduction with compression in the inguinal hernia, this unique case report highlighted the possibility of REM after self-reduction. Surgeons and radiologists should consider REM in patients with a history of inguinal hernia presenting with intestinal obstruction symptoms, even without any apparent signs of hernia in the physical examination.

Exercise-Induced Inguinal Hydrocele: An Unconventional Presentation of a Common Problem

Inguinal hernias are very common. Well-established diagnostic criteria including examination and imaging are available. Ultrasound, herniography, CT, and MR imaging can provide additional diagnostic information when examination alone is not deemed sufficient. However, decision making should not be overly dependent on imaging but must factor in all relevant information. Described here is a case that would have been a missed diagnosis and an example of unconventional documentation that facilitated the patient getting their care.

A New Approach and Old Techniques: Combined Endoscopic Repair of Inguinoscrotal Hernias

BACKGROUND

The treatment of inguinoscrotal hernias (ISH) represents one of the most challenging areas in surgical pathology. Although these hernias could be repaired through a minimally invasive approach, open repair is still considered to be the technique of choice for most surgeons. The purpose of this study is to evaluate our new combined [open+transabdominal preperitoneal (TAPP)/total preperitoneal (TEP)] method of ISH repair.

PATIENTS AND METHODS

The authors reviewed the charts of 124 patients with ISH who underwent hernia repair in different modifications: open, TAPP, TEP, and new combined method with a minimal follow-up of 3 months.

RESULTS

New combined (open+TAPP/TEP) method repair was successful in all 38 patients. Average case duration was 68.8 minutes (62 to 106 min). No recurrence was observed for the 13 months follow-up. Two patients had intraoperative serosal bowel injury, 1 patient developed postoperative seroma, and 2 patients developed several pain.

CONCLUSIONS

Combined (open+TAPP/TEP) method for ISH repair allows to minimize surgical trauma and reduce both the procedure time and the postoperative length of stay. Implementation of this method results in statistically significantly fewer wound-related postoperative complications compared with traditional methods.

A study of contralateral occult inguinal hernia in adult male patients undergoing total extraperitoneal herniorraphy

Background:

The incidence of contralateral occult hernia (COH) varies from 4.2% to 57.5%. Total extraperitoneal (TEP) gives us opportunity to visualize contralateral groin for occult hernia and its simultaneous repair. Ultrasonography (USG) helps to diagnose occult hernia preoperatively with detection rate of 96.6% with specificity 84.4%.

Objective:

The aims of this study were to identify the incidence of contralateral occult inguinal hernia in clinically diagnosed unilateral inguinal hernia patients using USG as diagnostic modality and to compare the clinical outcomes of unilateral TEP vs. bilateral TEP with respect to pain, duration of hospital stay, time for return to normal work, and postoperative complications.

Setting and Design:

This was a prospective observational, single-center study.

Materials and Methods:

A total of 30 male patients were included in the study who was having clinically diagnosed unilateral hernia. All patients were assessed by USG for contralateral occult inguinal hernia.

Results:

Incidence of COH was 10%, two (6.7%) had indirect defect, and 1 (3.3%) had direct defect. Two (6.7%) patients underwent bilateral TEP and 28 (93.3%) underwent unilateral TEP. No significant difference was observed in terms of mean duration of hospital stay, duration of surgery, and visual analog scale score for pain in both unilateral and bilateral TEP. The mean for resuming daily work in unilateral TEP was 4.86 ± 0.833 days and in bilateral TEP the mean was 7.50 ± 0.70 days and this showed statistically significant difference (P < 0.001).

Conclusion:

Patients with COH should be counselled for synchronous repair as there is no significant difference in clinical outcomes of unilateral and bilateral TEP. On the basis of this pilot study, it can be concluded that preoperative USG is mandatory for diagnosis and simultaneous management of preexisting contralateral hernia.

Chronic postoperative inguinal pain: A narrative review

Inguinodynia or chronic postoperative inguinal pain is a growing problem between patients who undergo surgical repair of an inguinal hernia. The change in results measurement proposed by many authors towards Patient Reported Outcome Measurement has underlined the importance of chronic postoperative inguinal pain, because of the great limitations in everyday life and the huge socioeconomic impact that it causes. In this article a narrative review of the available literature in PUBMED, EMBASE and Cochrane Library is performed and the most relevant aspects about epidemiology, etiology prevention, diagnosis and treatment of chronic postoperative inguinal pain are discussed. A new management algorithm is also proposed. The variability in its incidence and clinical presentation makes diagnosis of chronic postoperative inguinal pain a very challenging issue. There is no standardized therapy and an adequate etiological diagnosis is key point for a successful treatment. There are many treatment options that have to be sequentially used and adjusted to each patient and their clinical features.

Imaging modalities for inguinal hernia diagnosis: a systematic review

PURPOSE

The aim of the study was to determine which diagnostic modality [Computerized Tomography (CT), Magnetic Resonance Imaging (MRI), or ultrasound (US)] is more precise in terms of sensitivity and specificity in diagnosing inguinal hernia and sub-type of inguinal hernia (direct or indirect).

METHODS

This systematic review was reported according to Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA), and a search for relevant articles was undertaken in PubMed, Embase, and the Cochrane Library. Inclusion criteria were original studies that preoperatively diagnosed patients suspected of inguinal hernia by either CT, MRI, or US and compared diagnostic findings with operative findings or definitive follow-up. The main outcomes were the diagnostic certainty of inguinal hernia and type of hernia by sensitivity and specificity. All eligible studies were searched in the Retraction Watch database to ensure that all included studies were suitable for inclusion.

RESULTS

Bubble charts depicting the size of each patient cohort and percentual range for both sensitivity and specificity showed that US was better than CT and MRI in diagnosing inguinal hernia. Bubble charts for US and CT depicted high values within the studies that reported sensitivity and specificity in diagnosing type of hernia.

CONCLUSIONS

We found that US had the highest sensitivity and specificity. However, it must be taken into consideration that performance is highly dependent on the operator's level of expertise. Based on this systematic review, ultrasound may be the preferred imaging modality when physical examination is inconclusive, given that local expertise in performing US examination for hernia disease is adequate.

Management of Occult Contralateral Inguinal Hernia: Diagnosis and Treatment With Laparoscopic Totally Extra Peritoneal Repair

BACKGROUND

Up to 33% risk of occult contralateral inguinal hernia has been reported. This study aims to evaluate diagnostic and treatment modalities in the case of occult contralateral hernia and the role of ultrasonography (USG).

MATERIALS AND METHODS

Patients who had undergone inguinal hernia repair between 2009 and 2018 were studied retrospectively. The detection rate of occult inguinal hernia by USG and results of laparoscopic totally extra peritoneal repair (TEP) were evaluated.

RESULTS

Of 295 patients, USG was performed to the contralateral site in 80 with clinically unilateral hernia and occult hernia was detected in 44 (55%). Bilateral TEP was performed for these patients. There was no recurrence and no significant complication.

CONCLUSIONS

As it is noninvasive, easily accessible and has high sensitivity, USG is recommended in diagnosis. In the case of occult contralateral inguinal hernia, bilateral TEP is considered as a safe procedure. Thus, the need for a second operation and related complications can be prevented. We recommend routine USG to detect whether contralateral occult inguinal hernia is present.

Radiologic Reporting and Interpretation of Occult Inguinal Hernia

BACKGROUND

Inguinal hernias are common entities. Occult inguinal hernias are difficult to diagnose on examination and can cause groin and pelvic pain. Imaging is heavily relied on to help diagnose these hernias; as such, correct interpretation of imaging studies can prevent delay in treatment for a patient with pain. We evaluated the accuracy and reliability of radiologic reports for detection of occult inguinal hernias in patients with groin and pelvic pain.

STUDY DESIGN

All CT and MRI studies ordered for groin or pelvic pain during a 5-year period were analyzed. Studies were included if the original radiologic reports were available for review, and if the patient underwent operative exploration. A blinded radiologist was asked to "over-read" the images. Operative findings were considered the gold standard with which radiologic reports were compared.

RESULTS

Of 322 CT and MRI studies, 125 groins met criteria. Original radiologic reports were 35% accurate, with 97% positive predictive value (PPV) and 13% negative predictive value (NPV). Over-read radiologist reports were significantly different (p < 0.0001), with 79% accuracy, 97% PPV, and 30% NPV.

CONCLUSIONS

Most radiologic reports issued for CT and MRI studies were incorrect for evaluation of occult inguinal hernia. Over-read radiologist reports were more than twice as accurate when evaluating the same images. The physician who is relying on radiologic reports to determine plan of care for a patient with groin or pelvic pain should inquire further into any negative study, especially if there is strong clinical suspicion for inguinal hernia.

Groin Hernias in Women-A Review of the Literature

Background: To date, there are few studies and no systematic reviews focusing specifically on groin hernia in women. Most of the existing knowledge comes from registry data. Objective: This present review now reports on such findings as are available on groin hernia in women. Materials and Methods: A systematic search of the available literature was performed in September 2018 using Medline, PubMed, Google Scholar, and the Cochrane Library. For the present analysis 80 publications were identified. Results: The lifetime risk of developing a groin hernia in women is 3-5.8%. The proportion of women in the overall collective of operated groin hernias is 8.0-11.5%. In women, the proportion of femoral hernias is 16.7-37%. Risk factors for development of a groin hernia in women of high age and with a positive family history. A groin hernia during pregnancy should not be operated on. The rate of emergency procedures in women, at 14.5-17.0%, is 3 to 4-fold higher than in men and at 40.6% is even higher for femoral hernia. Therefore, watchful waiting is not indicated in women. During surgical repair of groin hernia in females the presence of a femoral hernia should always be excluded and if detected should be repaired using a laparo-endoscopic or open preperitoneal mesh technique. A higher rate of chronic postoperative inguinal pain must be expected in females. Conclusion: Special characteristics must be taken into account for repair of groin hernia in women.

Orientações da Sociedade Brasileira de Hérnia (SBH) para o manejo das hérnias inguinocrurais em adultos

RESUMO As hérnias inguinais são um problema frequente e o seu reparo representa a cirurgia mais comumente realizada por cirurgiões gerais. Nos últimos anos, novos princípios, produtos e técnicas têm mudado a rotina dos cirurgiões que precisam reciclar conhecimentos e aperfeiçoar novas habilidades. Além disso, antigos conceitos sobre indicação cirúrgica e riscos de complicações vêm sendo reavaliados. Visando criar um guia de orientações sobre o manejo das hérnias inguinais em pacientes adultos, a Sociedade Brasileira de Hérnias reuniu um grupo de experts com objetivo de revisar diversos tópicos, como indicação cirúrgica, manejo perioperatório, técnicas cirúrgicas, complicações e orientações pós-operatórias.

Effectiveness of endoscopic totally extraperitoneal (TEP) hernia correction for clinically occult inguinal hernia (EFFECT): study protocol for a randomized controlled trial

Background

Groin pain is a frequent complaint in surgical practice with an inguinal hernia being at the top of the differential diagnosis. The majority of inguinal hernias can be diagnosed clinically. However, patients with groin pain without signs of an inguinal hernia on anamnesis or physical examination provide a diagnostic challenge. If ultrasonography shows a hernia that could not be detected clinically, this entity is called a clinically occult hernia. It is debatable if this radiological hernia is the cause of complaints in all patients with inguinal pain.

The objective of this study is to assess whether watchful waiting is non-inferior to endoscopic totally extraperitoneal (TEP) inguinal repair in patients with a clinically occult inguinal hernia.

Methods

The EFFECT study is a multicenter non-blinded randomized controlled non-inferiority trial. Adult patients with unilateral groin pain and a clinically occult inguinal hernia are eligible to participate in this study. A total of 160 participants will be included and randomized to TEP inguinal hernia repair or a watchful waiting approach. The primary outcome of this study is pain reduction 3 months after treatment, measured by the Numeric Rating Scale (NRS). Secondary outcomes are quality of life, cost-effectiveness, patient satisfaction and crossover rate. Eight surgical centers will take part in the study. Participants will be followed-up for 1 year.

Discussion

This is the first large randomized controlled trial comparing treatments for patients with groin pain and a clinically occult inguinal hernia. To date, there are no interventional studies on the effect of surgery or a watchful waiting approach in terms of pain or quality of life in this subset of patients. A trial comparing the outcomes of the two approaches in patients with a clinically occult inguinal hernia is urgently needed to provide data facilitating the choice between the two treatment options. If watchful waiting is not inferior to surgical repair, costs of surgical repair may be saved.

Trial registration

The study protocol (NL61730.100.17) is approved by the Medical Ethics Committee (MEC-U) of the Diakonessenhuis, Utrecht, The Netherlands. The study was registered at the Netherlands Trial Registry (NTR6835) registered on November 13, 2017.

Electronic supplementary material

The online version of this article (10.1186/s13063-018-2711-7) contains supplementary material, which is available to authorized users.

Evaluation of hernia of the male inguinal canal: sonographic method

Sonography of the male inguinal canal for hernia is a common request. There is debate about the accuracy and even need for sonographic assessment of inguinal hernia. A clear, concise method is presented, with correlated diagrams and sonographic images, which aims to improve the ability of sonographers to easily identify inguinal herniae.

Clinical assessment, radiographic imaging, and patient self-report for abdominal wall hernias

BACKGROUND

Increasingly, abdominal wall hernias are being diagnosed incidentally through radiographic imaging. Such hernias are referred to as occult. However, the clinical significance of occult hernias is unknown. The objective of this study is to determine the prevalence of occult hernias and to assess the abdominal wall quality of life (AW-QOL) among patients with occult hernias.

MATERIALS AND METHODS

A blinded, observational, cross-sectional study, October-December 2016, of patients presenting to single academic institution's general surgery clinics was performed. Inclusion criteria included all patients with a computed tomography scan of the abdomen or pelvis within the last year with no intervening abdominal or pelvic surgery. Patients were administered a validated AW-QOL survey and underwent a standardized clinical examination. Computed tomography scans were reviewed. Primary outcomes were prevalence and AW-QOL measured by the modified Activities Assessment Scale. AW-QOL of patients with no hernias was compared to that of those with occult hernias and clinically apparent hernias using Mann-Whitney U test.

RESULTS

A total of 250 patients were enrolled of whom 97 (38.8%) had a hernia noted on clinical examination and 132 (52.8%) had a hernia noted on radiographic imaging. The prevalence of occult hernias was 38 (15.2%). Patients with no hernia had a median (interquartile range) AW-QOL of 82.5 (55.0-95.3), patients with clinically apparent hernias had AW-QOL of 47.7 (31.2-81.6; P < 0.001), and patients with occult hernias had AW-QOL of 72.4 (38.5-97.2; P = 0.36).

CONCLUSIONS

Both clinically apparent and occult hernias are prevalent. However, only patients with clinically apparent hernias had differences in AW-QOL when compared to patients with no hernias. Prospective trials are needed to assess the outcomes of patients with occult hernias managed with and without surgical repair.

What happens after no contralateral exploration in total extraperitoneal (TEP) herniorrhaphy of clinical unilateral inguinal hernias?

BACKGROUND

While performing unilateral TEP herniorrhaphy, controversy still exists about whether to do contralateral exploration or not. Routine contralateral exploration has been proposed to prevent metachronous contralateral hernias by the repair of incidental contralateral occult hernias. Some surgeons have even proposed to do prophylactic bilateral TEP herniorrhaphy for unilateral hernia patients. To evaluate the appropriateness of not doing contralateral exploration in unilateral TEP herniorrhaphy, we reviewed our experiences under our practice of no contralateral exploration and we also reviewed other published literature.

METHODS

A total of 305 patients who underwent 313 TEP herniorrhaphies for inguinal hernias by a single surgeon during August 2012-July 2016 at Chia-Yi Christian Hospital were enrolled in this retrospective study. Demographic, perioperative and follow-up data were obtained for analysis and review.

RESULTS

Of the 305 patients, 261 patients had unilateral TEP herniorrhaphy and 44 patients had bilateral TEP herniorrhaphy. The mean operation time for the unilateral TEP herniorrhaphy group was 59.8 min, and for the bilateral TEP herniorrhaphy group it was 85.2 min (p < 0.001). Seven of 261 (2.7%) patients had metachronous contralateral hernia after unilateral TEP herniorrhaphy. There were no statistically significant differences in any of the outcome variables when comparing the sequential and simultaneous primary bilateral TEP herniorrhaphies.

CONCLUSIONS

Without routine contralateral exploration, the incidence of metachronous contralateral hernia was 2.7% (7/261) in unilateral hernia patients. This is acceptable as metachronous hernia also occurred in 3.2% of patients with negative contralateral exploration according to our literature review. Sequential and simultaneous bilateral primary TEP herniorrhaphy outcomes were similar. We conclude that no exploration for the other groin is a justified decision for unilateral inguinal hernia patients.

Pubic and inguinal venous collaterals mimic inguinal hernia

Herein we report a case of a 38-year-old men who presented with acute suprapubic pain caused by a tubular, hypoechoic, non-compressible, inguinal mass with no flow evident on color Doppler sonography. The history of the patient, the clinical signs of local inflammation and tenderness on palpation as well as the results of the Doppler ultrasound examination led to the diagnose of an inguinal hernia with bowl incarceration. However, due to a remaining uncertainty whether a bilateral or unilateral hernia was immanent and whether the bowl incarceration was caused by a right or left sided hernia the on-call surgeon initiated a computed tomography (CT) scan. Surprisingly, this CT scan revealed extensive suprapubic venous collaterals with thrombophlebitis that mimicked a bilateral inguinal hernia secondary to an acute unilateral femoral vein thrombosis. Instead of undergoing surgery the patient was treated with antibiotics, pain killer and heparin and was discharged from hospital after 8 days.

International guidelines for groin hernia management

INTRODUCTION

Worldwide, more than 20 million patients undergo groin hernia repair annually. The many different approaches, treatment indications and a significant array of techniques for groin hernia repair warrant guidelines to standardize care, minimize complications, and improve results. The main goal of these guidelines is to improve patient outcomes, specifically to decrease recurrence rates and reduce chronic pain, the most frequent problems following groin hernia repair. They have been endorsed by all five continental hernia societies, the International Endo Hernia Society and the European Association for Endoscopic Surgery.

METHODS

An expert group of international surgeons (the HerniaSurge Group) and one anesthesiologist pain expert was formed. The group consisted of members from all continents with specific experience in hernia-related research. Care was taken to include surgeons who perform different types of repair and had preferably performed research on groin hernia surgery. During the Group's first meeting, evidence-based medicine (EBM) training occurred and 166 key questions (KQ) were formulated. EBM rules were followed in complete literature searches (including a complete search by The Dutch Cochrane database) to January 1, 2015 and to July 1, 2015 for level 1 publications. The articles were scored by teams of two or three according to Oxford, SIGN and Grade methodologies. During five 2-day meetings, results were discussed with the working group members leading to 136 statements and 88 recommendations. Recommendations were graded as "strong" (recommendations) or "weak" (suggestions) and by consensus in some cases upgraded. In the Results and summary section below, the term "should" refers to a recommendation. The AGREE II instrument was used to validate the guidelines. An external review was performed by three international experts. They recommended the guidelines with high scores. The risk factors for inguinal hernia (IH) include: family history, previous contra-lateral hernia, male gender, age, abnormal collagen metabolism, prostatectomy, and low body mass index. Peri-operative risk factors for recurrence include poor surgical techniques, low surgical volumes, surgical inexperience and local anesthesia. These should be considered when treating IH patients. IH diagnosis can be confirmed by physical examination alone in the vast majority of patients with appropriate signs and symptoms. Rarely, ultrasound is necessary. Less commonly still, a dynamic MRI or CT scan or herniography may be needed. The EHS classification system is suggested to stratify IH patients for tailored treatment, research and audit. Symptomatic groin hernias should be treated surgically. Asymptomatic or minimally symptomatic male IH patients may be managed with "watchful waiting" since their risk of hernia-related emergencies is low. The majority of these individuals will eventually require surgery; therefore, surgical risks and the watchful waiting strategy should be discussed with patients. Surgical treatment should be tailored to the surgeon's expertise, patient- and hernia-related characteristics and local/national resources. Furthermore, patient health-related, life style and social factors should all influence the shared decision-making process leading up to hernia management. Mesh repair is recommended as first choice, either by an open procedure or a laparo-endoscopic repair technique. One standard repair technique for all groin hernias does not exist. It is recommended that surgeons/surgical services provide both anterior and posterior approach options. Lichtenstein and laparo-endoscopic repair are best evaluated. Many other techniques need further evaluation. Provided that resources and expertise are available, laparo-endoscopic techniques have faster recovery times, lower chronic pain risk and are cost effective. There is discussion concerning laparo-endoscopic management of potential bilateral hernias (occult hernia issue). After patient consent, during TAPP, the contra-lateral side should be inspected. This is not suggested during unilateral TEP repair. After appropriate discussions with patients concerning results tissue repair (first choice is the Shouldice technique) can be offered. Day surgery is recommended for the majority of groin hernia repair provided aftercare is organized. Surgeons should be aware of the intrinsic characteristics of the meshes they use. Use of so-called low-weight mesh may have slight short-term benefits like reduced postoperative pain and shorter convalescence, but are not associated with better longer-term outcomes like recurrence and chronic pain. Mesh selection on weight alone is not recommended. The incidence of erosion seems higher with plug versus flat mesh. It is suggested not to use plug repair techniques. The use of other implants to replace the standard flat mesh in the Lichtenstein technique is currently not recommended. In almost all cases, mesh fixation in TEP is unnecessary. In both TEP and TAPP it is recommended to fix mesh in M3 hernias (large medial) to reduce recurrence risk. Antibiotic prophylaxis in average-risk patients in low-risk environments is not recommended in open surgery. In laparo-endoscopic repair it is never recommended. Local anesthesia in open repair has many advantages, and its use is recommended provided the surgeon is experienced in this technique. General anesthesia is suggested over regional in patients aged 65 and older as it might be associated with fewer complications like myocardial infarction, pneumonia and thromboembolism. Perioperative field blocks and/or subfascial/subcutaneous infiltrations are recommended in all cases of open repair. Patients are recommended to resume normal activities without restrictions as soon as they feel comfortable. Provided expertise is available, it is suggested that women with groin hernias undergo laparo-endoscopic repair in order to decrease the risk of chronic pain and avoid missing a femoral hernia. Watchful waiting is suggested in pregnant women as groin swelling most often consists of self-limited round ligament varicosities. Timely mesh repair by a laparo-endoscopic approach is suggested for femoral hernias provided expertise is available. All complications of groin hernia management are discussed in an extensive chapter on the topic. Overall, the incidence of clinically significant chronic pain is in the 10-12% range, decreasing over time. Debilitating chronic pain affecting normal daily activities or work ranges from 0.5 to 6%. Chronic postoperative inguinal pain (CPIP) is defined as bothersome moderate pain impacting daily activities lasting at least 3 months postoperatively and decreasing over time. CPIP risk factors include: young age, female gender, high preoperative pain, early high postoperative pain, recurrent hernia and open repair. For CPIP the focus should be on nerve recognition in open surgery and, in selected cases, prophylactic pragmatic nerve resection (planned resection is not suggested). It is suggested that CPIP management be performed by multi-disciplinary teams. It is also suggested that CPIP be managed by a combination of pharmacological and interventional measures and, if this is unsuccessful, followed by, in selected cases (triple) neurectomy and (in selected cases) mesh removal. For recurrent hernia after anterior repair, posterior repair is recommended. If recurrence occurs after a posterior repair, an anterior repair is recommended. After a failed anterior and posterior approach, management by a specialist hernia surgeon is recommended. Risk factors for hernia incarceration/strangulation include: female gender, femoral hernia and a history of hospitalization related to groin hernia. It is suggested that treatment of emergencies be tailored according to patient- and hernia-related factors, local expertise and resources. Learning curves vary between different techniques. Probably about 100 supervised laparo-endoscopic repairs are needed to achieve the same results as open mesh surgery like Lichtenstein. It is suggested that case load per surgeon is more important than center volume. It is recommended that minimum requirements be developed to certify individuals as expert hernia surgeon. The same is true for the designation "Hernia Center". From a cost-effectiveness perspective, day-case laparoscopic IH repair with minimal use of disposables is recommended. The development and implementation of national groin hernia registries in every country (or region, in the case of small country populations) is suggested. They should include patient follow-up data and account for local healthcare structures. A dissemination and implementation plan of the guidelines will be developed by global (HerniaSurge), regional (international societies) and local (national chapters) initiatives through internet websites, social media and smartphone apps. An overarching plan to improve access to safe IH surgery in low-resource settings (LRSs) is needed. It is suggested that this plan contains simple guidelines and a sustainability strategy, independent of international aid. It is suggested that in LRSs the focus be on performing high-volume Lichtenstein repair under local anesthesia using low-cost mesh. Three chapters discuss future research, guidelines for general practitioners and guidelines for patients.

CONCLUSIONS

The HerniaSurge Group has developed these extensive and inclusive guidelines for the management of adult groin hernia patients. It is hoped that they will lead to better outcomes for groin hernia patients wherever they live. More knowledge, better training, national audit and specialization in groin hernia management will standardize care for these patients, lead to more effective and efficient healthcare and provide direction for future research.

Groin hernia diagnostics: dynamic inguinal ultrasound (DIUS)

PURPOSE

Although clinical examination is the gold standard for the diagnosis of groin hernia, imaging procedures can improve the detection of femoral hernias, incipient hernias, and less-common types of hernias (e.g., an obturator hernia). The aim of this study is to evaluate the sensitivity and specificity of dynamic inguinal ultrasound (DIUS).

MATERIALS AND METHODS

Between July 2010 and June 2015, 4951 clinical and ultrasound examinations of the groin area were conducted at the Hanse-Hernienzentrum in Hamburg, Germany. The ultrasonographic findings were prospectively evaluated to determine the number of inguinal and femoral hernia diagnoses that were ultrasonically confirmed and also to consider cases in which clinical examination overlooked these diagnoses. The results were compared with the intraoperative findings.

RESULTS

The results show that standardized ultrasound examination of the groin area with high-frequency, small-part linear transducers also serves to accurately display femoral and small or occult groin hernias. The high-level specificity (0.9980) and sensitivity (0.9758) are proof of the procedure's quality.

CONCLUSIONS

To ensure high-quality hernia treatment, regular use of standardized ultrasound examinations is recommended.

Point-of-Care Ultrasound Identification of an Abdominal Hernia

Pediatric emergency medicine physicians may be able to use point-of-care ultrasound (POCUS) as a tool to evaluate abdominal wall masses. We present a case of a 2-month-old infant with a lower abdominal mass identified as a hernia sac by POCUS. It was initially thought to represent a Spigelian-type abdominal wall hernia but subsequently determined to be an unusual presentation of an inguinal hernia with testicular entrapment. We review each of these diagnoses in addition to relevant POCUS findings.

High incidence of recess formation at myopectineal orifice during laparoscopic surgery

BACKGROUND

Groin hernias are frequently seen in clinical practice. The purpose of this study was to determine the rate of patients who might have latent groin hernia.

METHODS

During laparoscopic abdominal surgery, we observed the area around the groin lesion and attempted to evaluate the degree of recess at myopectineal orifice. The classification defining the recess was as follows: Grade 0: no recess, Grade I: slight recess with a visible bottom, Grade II: deep recess with an invisible bottom, Grade III: other organ invaginated into the recess, and Grade IV: confirmed bulging on the body surface.

RESULTS

From 2009 to 2011, 46 patients were enrolled. A recess around myopectineal orifice were detected in 20 patients. The lesions were as follows: 11 on the lateral side of the inferior epigastric artery (IEA), five on the internal side of the IEA, three at both sites and one found at the femoral ring. According to the grade classification of these groin hernias, 26 (57%) were Grade 0, 14 (30%) Grade I, 4 (9%) Grade II, 1 (2%) Grade III, and 1 (2%) Grade IV.

CONCLUSIONS

This study showed that rate of patients with asymptomatic latent groin hernias is relatively high in Japanese.

Evidence-Based Hernia Treatment in Adults

BACKGROUND

Inguinal hernia repair is the most common general surgical procedure in industrialized countries, with a frequency of about 200 operations per 100 000 persons per year. Suture- and mesh-based techniques can be used, and the procedure can be either open or minimally invasive.

METHODS

This review is based on a selective search of the literature, with interpretation of the published findings according to the principles of evidence-based medicine.

RESULTS

Inguinal hernia is diagnosed by physical examination. Surgery is not necessarily indicated for a primary, asymptomatic inguinal hernia in a male patient, but all inguinal hernias in women should be operated on. For hernias in women, and for all bilateral hernias, a laparoscopic or endoscopic procedure is preferable to an open procedure. Primary unilateral hernias in men can be treated either by open surgery or by laparoscopy/endoscopy. Patients treated by laparoscopy/endoscopy develop chronic pain less often than those treated by open surgery. A mesh-based repair is generally recommended; this seems reasonable in view of the pathogenesis of the condition, which involves an abnormality of the extracellular matrix.

CONCLUSION

The choice of procedure has been addressed by international guidelines based on high-level evidence. Surgeons should deviate from their recommendations only in exceptional cases and for special reasons. Guideline conformity implies that hernia surgeons must master both open and endoscopic/laparoscopic techniques.

Effectiveness of Sonography in Detecting Clinically Occult Femoral Hernias

OBJECTIVES

The aim of this study was to evaluate the accuracy of sonography for femoral hernia diagnosis in patients with suspected hernias that were not evident on clinical examination.

METHODS

A retrospective analysis was performed for 39 consecutive patients with 40 clinically suspected but occult femoral hernias and subsequent positive sonographic findings for femoral hernias. Clinical records for all patients were reviewed for surgical outcomes and clinical follow-up. Surgical findings of a femoral hernia sac or widened femoral canal requiring repair, with symptomatic relief after the procedure, were considered positive for a femoral hernia.

RESULTS

Among the 40 femoral hernias examined by sonography, 33 of 40 groins underwent surgical exploration, with 32 true-positive findings and 1 false-positive finding on sonography. The false-positive case was an inguinal hernia at surgery. The accuracy of sonography was 96.9% for those with surgical correlations. The remaining 7 patients did not undergo surgery but had clinical follow-up.

CONCLUSIONS

This study confirms high diagnostic accuracy of sonography for nonpalpable femoral hernias in symptomatic groins compared to surgical findings.

Laparoscopic reduction and repair of a strangulated interparietal inguinal hernia

An interparietal hernia is defined as a hernia in which the hernial sac lies between the tissue layers comprising the abdominal wall. A strangulated interparietal inguinal hernia without an external bulge is a rare cause of an acute abdomen and difficult to diagnose preoperatively. We report a patient with a history of a right inguinal hernia who presented with abdominal pain without inguinal bulging. An interparietal (preperitoneal) inguinal hernia was diagnosed and treated by laparoscopic reduction and a transabdominal preperitoneal hernia repair. This is the first case report of an interparietal inguinal hernia managed entirely laparoscopically. Although the laparoscopic approach is not considered standard treatment for strangulated intestinal obstruction, it may be worth considering, especially for patients with uncertain etiology, because of its decreased invasiveness compared to open exploration.

Role of Sonography in Clinically Occult Femoral Hernias

OBJECTIVES

The purpose of this article is to evaluate the diagnostic accuracy of sonography in clinically occult femoral hernias and to describe our sonographic technique.

METHODS

The clinical and imaging data for 93 outpatients referred by general surgeons, all of whom underwent sonographic evaluation and surgery, were reviewed retrospectively. Of these, 55 patients who underwent surgical exploration for groin hernias within 3 months of sonography and met all inclusion criteria were included in the study. The sonographic technique involves using the pubic tubercle as an osseous landmark to identify and appropriately visualize the femoral canal. The Valsalva maneuver is then used to differentiate the movement of normal fat (a potential pitfall) from true herniation in the femoral canal. Surgical findings were used as the reference standard by which sonographic results were judged. Two-by-two contingency tables were used to calculate the sensitivity, specificity, positive predictive value, and negative predictive value.

RESULTS

In these 55 patients, surgery revealed 15 femoral hernias. Eight femoral hernias occurred in women, and 7 occurred in men. For diagnosing femoral hernias, sonography demonstrated sensitivity of 80%, specificity of 88%, a positive predictive value of 71%, and a negative predictive value of 92%. True-positive cases of femoral hernias have a sonographic appearance of a hypoechoic sac with speckled internal echoes. When examining during the Valsalva maneuver, a femoral hernia passes deep to the inguinal ligament, expands the femoral canal, displacing the normal canal fat, and effaces the femoral vein.

CONCLUSIONS

Sonography can exclude femoral hernias with high confidence in light of its exceptional negative predictive value. With attention to technique and imaging criteria, the diagnostic accuracy of sonography can be enhanced.

High accuracy of ultrasound in diagnosing the presence and type of groin hernia

BACKGROUND

To evaluate the accuracy of ultrasound (US) in diagnosing the the presence and type of groin hernia.

METHODS

We retrospectively studied the results of 172 US examinations of the groin in 151 patients (101 men and 50 women; mean age, 59 years) who had undergone US examination for suspected groin hernia. In total, 119 of the groin hernias had been diagnosed on US, and 108 (91%) had required subsequent surgery. All patients who had had positive results for hernia on US and did not undergo surgery (n = 11) and most of the patients whose US results had been negative for hernia (n = 48) underwent limited MRI or CT scanning. We determined the sensitivity, specificity, and accuracy of US in diagnosing the presence and type of groin hernia. To identify any change in the accuracy of US over time at our institution, we compared the sensitivity, specificity, and accuracy of its use from January 2002 through December 2010 (n = 54 groins) with those from January 2011 through December 2012 (n = 118 groins).

RESULTS

The overall rates of sensitivity and specificity of US for diagnosing the presence of groin hernia were 96% and 96%. These rates reflect improvements from 92% and 88% prior to 2011 to 98% and 100% beginning in 2011. In addition, the overall accuracy of US for diagnosing the type of groin hernia was 96%. This also improved over time at our center from 91% prior to 2011 to 98% beginning in 2011.

CONCLUSIONS

US is highly accurate at diagnosing the presence and type of groin hernia.

Single Surgeon Experience With Repair of Occult Inguinal Hernias Using the TAPP Approach: A Prospective Study

The trans-abdominal preperitoneal (TAPP) approach provides access to the contralateral groin for exploration and repair of occult hernias. Previous studies have shown that the total extraperitoneal (TEP) approach also provides access to the contralateral groin for inguinal hernia repair. The aim of the current study was to document the rate of contralateral occult inguinal hernias diagnosed during the TAPP procedure. Data from all cases of TAPP inguinal hernia repair in our hospital were recorded prospectively for 3 years. Follow-up appointments included physical examinations. A total of 302 patients underwent TAPP inguinal hernia repair. We excluded 3 patients from the study and 299 were included. A total of 204 (68%) patients were scheduled for unilateral hernia repair and contralateral occult hernias were detected in 44 (21%) patients in this group. Of the 74 patients scheduled for bilateral repair, 60 (81%) underwent bilateral repair. In the remaining 29 patients, the diagnosis was changed to unilateral hernia. In this group, unilateral hernia repair was planned along with the possibility of contralateral hernia in 18 (6%) patients. Of these patients, 5 (27%) were subsequently found to have contralateral defects, 1 of whom underwent femoral repair. Our clinical diagnoses were 78% accurate. Identifying the actual incidence of contralateral occult inguinal hernia will enhance the planning of the treatment preoperatively and favor resource allotment planning for utilization of the operating room. TAPP allows preoperative diagnosis and treatment of contralateral occult hernias, saving the patient from additional symptoms and reoperations.

Magnetic resonance imaging has no role in diagnosing the origin of pain in patients with overwhelmingly painful inguinal hernia

PURPOSE

Clinical tools for predicting postoperative pain should be developed to provide better care for patients. The aims of this study were to evaluate preoperative magnetic resonance imaging (MRI) findings to reveal reasons for overwhelming pain in patients with inguinal hernia and to detect changes in quality-of-life (QoL) and pain scores preoperatively and following laparoscopic totally extraperitoneal (TEP) repair of inguinal hernia.

METHODS

Twenty-two patients aged 18-50 years presenting with extremely painful inguinal hernias (highest pain scores >50, scale 0-100) were examined with MRI prior to operative treatment with TEP repair. Postoperative follow-up lasted 6 months and consisted of questionnaires regarding functional status, pain, QoL and possible complications. Postoperative MRI scans were performed only in cases of preoperative findings on the MRI or prolonged inguinal pain persisting over 6 months.

RESULTS

Prolonged postoperative pain could not be predicted from preoperative MRI scans, because no signs of the pain's origin such as pubic periostal irritation, bone marrow edema, pelvic bone or hip joint abnormalities, or lower abdominal muscle hemorrhage were detected in MRI. TEP repair of inguinal hernia significantly improved the patients' quality of life and relieved pain symptoms. High preoperative pain scores were major predictors of prolonged postoperative pain.

CONCLUSIONS

Carefully evaluated preoperative pelvic MRI was usually normal in patients with high pain scores prior to operation. Preoperative pain scores may serve as indicators of development of prolonged inguinal pain.

Tamoxifen induces the development of hernia in mice by activating MMP-2 and MMP-13 expression

Hernia is a disease with defects in collagen synthesis/metabolism. However, the underlying mechanisms for hernia formation have not been fully defined. Tamoxifen is a selective estrogen receptor modulator and used for patients with breast cancer. Tamoxifen also has pleiotropic and side effects. Herein, we report that tamoxifen treatment resulted in an appearance of a large bulge in the low abdomen between the hind legs in male but not in female mice. The autopsy demonstrated that the low abdominal wall was broken and a large amount of intestine herniated out of the abdominal cavity. Histological analysis indicated that tamoxifen caused structural abnormalities in the low abdominal wall which were associated with decreased type II collagen content. Furthermore, we determined increased matrix metalloproteinase-2 (MMP-2) and MMP-13 expression in the tissue. In vitro, tamoxifen induced MMP-2 and MMP-13 expression in fibroblasts. The promoter activity analysis and ChIP assay demonstrate that induction of MMP-13 expression was associated with activation of JNK-AP-1 and ERK1/2 signaling pathways while induction of MMP-2 expression was related to activation of the ERK1/2 signaling pathway. Taken together, our study establishes a novel murine hernia model, defines a severe side effect of tamoxifen, and suggests a caution to male patients receiving tamoxifen treatment.

Do we really know the symptoms of inguinal hernia?

PURPOSE

Although there is a high incidence of inguinal hernia in developed countries, few studies have been conducted to describe the symptoms, and these few only address the local symptoms, not those presenting at other levels. The aim of the present study is to conduct a detailed review of the symptoms, both inguinal and otherwise, of patients with inguinal hernia.

METHODS

A case-control study was designed to compare the symptoms presented by 231 patients diagnosed with inguinal hernia with those of a second group of 231 randomly-selected subjects. In the hernia group, the symptoms were also evaluated according to the location of the hernia (right, left, bilateral).

RESULTS

Significant differences (more symptomatology in patients with hernia) were found for the following items: groin pain, genital pain, urinary symptoms, abdominal pain, increased peristalsis and tenesmus. On the contrary, the control patients presented greater symptomatology with respect to back pain and diaphragm pain.

CONCLUSIONS

Patients with inguinal hernia present a wide variety of symptoms, and these are not restricted to the inguinal area. It is important to be aware of this fact to convey accurate information to the patient, especially with regard to postoperative expectations.

The importance of systematic reviews in radiology

No abstract.

Adductor longus tendon rupture mistaken for incarcerated inguinal hernia

An incarcerated inguinal hernia is a common diagnosis, since the risk of an inguinal hernia incarcerating or strangulating is around 0.3-3%. An acute rupture of the adductor longus tendon is rarely seen and mostly affects (semi-) professional sportsmen. We present a case of a patient with an assumed incarcerated inguinal hernia which turned out to be a proximal adductor longus tendon rupture. If patients without a history of inguinal hernia present themselves with acute groin pain after suddenly exorotating the upper leg, a rupture of the adductor longus tendon should be considered. Both surgical and non-surgical treatment can be performed.

[Hernia surgery in urology: part 1: inguinal, femoral and umbilical hernias - fundamentals of clinical diagnostics and treatment]

Hernias are a common occurrence with correspondingly huge clinical and economic impacts on the healthcare system. The most common forms of hernia which need to be diagnosed and treated in routine urological work are inguinal and umbilical hernias. With the objective of reconstructing and stabilizing the inguinal canal there are the possibilities of open and minimally invasive surgery and both methods can be performed with suture or mesh repair. Indications for surgery of umbilical hernias are infrequent although this is possible with little effort under local anesthesia. This article presents an overview of the epidemiology, pathogenesis, clinical symptoms, diagnostics and therapy of inguinal, femoral and umbilical hernias.