Perineal hernia

Dr Daniel J Bell and Dr Sally Ayesa et al.

Perineal hernias, also known as levator or pudendal hernias 2, (alternative plural: herniae) are rare pelvic hernias, occurring through a defect in the pelvic floor musculature.

More common in females, with peak age of presentation between 40 and 60 years. 

Perineal hernias are classified as anterior or posterior depending on their relationship with the transverse perineal muscle. Anterior hernias are more common than posterior hernias and occur almost exclusively in females. 

Hernias are most commonly acquired, with rare congenital cases. Acquired causes include pregnancy (accounting for the increased incidence in females), obesity or long-standing ascites. Secondary hernias also occur following extensive pelvic surgery such as pelvic exenteration

Anterior hernias demonstrate herniation of bowel through the urogenital diaphragm.

Posterior perineal hernias are seen on CT as protrusion of loops of sigmoid colon or rectum into the ischioanal fossa

Article information

rID: 50280
Synonyms or Alternate Spellings:
  • Pudendal hernias
  • Pudendal hernia
  • Pudendal herniae
  • Levator herniae
  • Levator hernia
  • Levator hernias
  • Perineal hernias
  • Perineal herniae
  • Perineal herniation

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Cases and figures

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