Omentocele vs enterocole

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omentocele vs enterocele hernia difference

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Omentocele vs Enterocele

These two terms describe the same basic entity — a hernia — classified by what is inside the hernial sac (the contents). They are not two different types of hernias structurally; rather, they are subcategories based on content.

Core Concept: Hernial Contents

Every hernia has three components:

Hernial opening (the defect/ring)
Hernial sac (parietal peritoneum)
Hernial contents — "may be almost any intra-abdominal viscus but usually consist of greater omentum or loops of small bowel"

(General Anatomy and Musculoskeletal System, THIEME Atlas)

The most common contents of a hernia are omentum and small bowel — and these give rise to the two terms:

Comparison Table

Feature	Omentocele	Enterocele
Definition	Hernia whose sac contains omentum (greater omentum)	Hernia whose sac contains intestine (small bowel/peritoneal contents)
Etymology	Omentum + -cele (Greek: tumor/swelling)	Enteron (intestine) + -cele
Contents	Greater omentum	Small intestine (± peritoneal sac)
Sac	Present (parietal peritoneum)	Present (parietal peritoneum)
Reducibility	Usually reducible; omentum is pliable and less likely to strangulate	More prone to obstruction/strangulation given bowel contents
Strangulation risk	Lower — omentum tolerates compression better	Higher — bowel can obstruct, infarct
Clinical presentation	Soft, doughy, non-tender lump	Soft lump; may have colicky pain if bowel obstructs
Primary context	Inguinal/umbilical hernias in adults, epigastric hernias	Inguinal hernias; also specifically pelvic enterocele in women
Special use of "enterocele"	—	In gynecology/urology: specifically means herniation of peritoneum + bowel through the pelvic floor (typically between vaginal cuff/uterus and rectum) — a form of pelvic organ prolapse

Clinical Significance

Omentocele:

Common in inguinal, umbilical, and epigastric hernias
The omentum acts as a "plug" — it partially seals the defect
Lower urgency for repair (rarely strangulates acutely)
On imaging: fat-density contents in the sac

Enterocele:

When bowel is in the sac, there is risk of incarceration → strangulation → bowel obstruction
Richter hernia (only the antimesenteric wall protrudes) is a subtype — strangulation without obstruction is possible
In pelvic enterocele (urogynecology): herniation of peritoneum and small intestine through the pelvic floor, commonly after hysterectomy or retropubic urethropexy. Presents with vaginal bulge, pelvic pressure, and defecatory dysfunction. Two mechanisms: (1) endopelvic fascia defect, or (2) full-thickness support failure

(Berek & Novak's Gynecology; Hinman's Atlas of Urologic Surgery)

Pelvic Enterocele (Special Category)

Enterocele — pelvic sagittal view showing small intestine herniating through the pelvic floor between the vagina and rectum

In women, "enterocele" has a distinct, specific gynecological meaning: herniation of the peritoneal sac (containing small bowel) through the pelvic floor, usually at the apex (vaginal vault), between the uterus/vaginal cuff and the rectum. There is no equivalent "omentocele" in this pelvic context — omentum does not typically prolapse through the pelvic floor.

Summary

Omentocele = hernia containing omentum; Enterocele = hernia containing intestine. Both share the same sac structure; the difference is purely the content. Enterocele carries higher risk of obstruction and strangulation. In gynecology, "enterocele" has a more specific meaning — apical pelvic organ prolapse with bowel herniation through the pelvic floor.

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