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Surgical Endoscopy

, Volume 27, Issue 1, pp 11–18 | Cite as

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

  • Amy Robinson
  • Duncan LightEmail author
  • Adetayo Kasim
  • Colin Nice
Review

Abstract

Background

Inguinal hernias are a common cause of groin pain. Most hernias are detectable by clinical examination and many patients proceed to hernia repair on the basis of history and examination findings alone. However, a significant proportion of patients with symptoms suggestive of groin hernia are found to have a normal clinical examination. Several radiological techniques have been developed to solve the dilemma posed by occult inguinal hernias. No systematic review or meta-analysis has addressed this common clinical problem.

Methods

A systematic review and meta-analysis were undertaken of relevant articles in Medline, Embase, and the Cochrane database. Studies were assessed using the QUADAS tool. Statistical analysis was undertaken.

Results

We have shown in this meta-analysis that ultrasound has a sensitivity of 86 % and a specificity of 77 % in occult inguinal hernias. Computed tomography has a sensitivity of 80 % and a specificity of 65 %. Herniography has a sensitivity of 91 % and a specificity of 83 %.

Conclusions

Based on this systematic review, herniography should be considered as the initial investigation for occult inguinal hernia where available. In centers where this is not available, ultrasound of the groin should be used with good clinical judgment. When there is still diagnostic uncertainty, further investigation with magnetic resonance imaging should be considered to exclude alternative pathology.

Keywords

Hernia Ultrasonography Occult hernia 

Notes

Acknowledgments

The authors acknowledge the assistance of the Statistics Department at Durham University and the medical library in Gateshead NHS Trust.

Disclosures

Amy Robinson, Duncan Light, Adetayo Kasim, and Colin Nice have no conflicts of interest or financial ties to disclose.

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Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  • Amy Robinson
    • 1
  • Duncan Light
    • 1
    Email author
  • Adetayo Kasim
    • 2
  • Colin Nice
    • 1
  1. 1.Department of General SurgeryGateshead NHS TrustGatesheadUK
  2. 2.Department of StatisticsDurham UniversityDurham CityUK

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