Cesarean section scar diverticulum

Changed by Mohammad Taghi Niknejad, 19 Dec 2023
Disclosures - updated 12 Nov 2023: Nothing to disclose

Updates to Article Attributes

Body was changed:

Caesarean section scar diverticulum is a form of outpouching located in the anterior lower uterine cavity at the site of a caesarean section scar.

There is some similarity with the term caesarean scar niche.

Clinical presentation

  • mostly asymptomatic

  • postmenstrual spotting

Radiographic features

The diagnosis is made mainly with transvaginal ultrasound in the postmenstrual period. Sonohysterography is the best for diagnosis. Less commonly used modalities include hysterosalpingography and MRI.

It appears as a U or V shaped defect or a focal outpouching at the site of a prior caesarean section with >2 mm depth, with the base at the endometrial cavity and apex towards the anterior wall of the isthmus. It It may be located within the lower uterine segment or upper endocervical canal.

Treatment and prognosis

Surgical options are only for symptomatic patients and include 3:

  • endoscopic isthmorrhaphy (isthmoplasty)

    • can be done via laparoscopy, hysteroscopy, or combined

    • usually done if the residual myometrial thickness is <3 mm

  • open repair: if endoscopic facilities are unavailable

  • less common: hysterectomy

Differential diagnosis

  • -<p><strong>Caesarean section scar diverticulum</strong> is a form of outpouching located in the anterior lower <a href="/articles/uterus">uterine cavity</a> at the site of a <a href="/articles/caesarean-section" title="Caesarean section">caesarean section</a> scar. </p><p>There is some similarity with the term <a href="/articles/cesarean-scar-niche">caesarean scar niche</a>.</p><h4>Clinical presentation</h4><ul>
  • +<p><strong>Caesarean section scar diverticulum</strong> is a form of outpouching located in the anterior lower <a href="/articles/uterus">uterine cavity</a> at the site of a <a href="/articles/caesarean-section" title="Caesarean section">caesarean section</a> scar.&nbsp;</p><p>There is some similarity with the term <a href="/articles/cesarean-scar-niche">caesarean scar niche</a>.</p><h4>Clinical presentation</h4><ul>
  • -</ul><h4>Radiographic features</h4><p>The diagnosis is made mainly with transvaginal ultrasound in the postmenstrual period. <a href="/articles/sonohysterography">Sonohysterography</a> is the best for diagnosis. Less commonly used modalities include <a href="/articles/hysterosalpingogram">hysterosalpingography</a> and MRI.</p><p>It appears as a U or V shaped defect or a focal outpouching at the site of a prior caesarean section with &gt;2 mm depth, with the base at the endometrial cavity and apex towards the anterior wall of the isthmus. It may be located within the lower uterine segment or upper endocervical canal.</p><h4>Treatment and prognosis</h4><p>Surgical options are only for symptomatic patients and include <sup>3</sup>:</p><ul>
  • +</ul><h4>Radiographic features</h4><p>The diagnosis is made mainly with transvaginal ultrasound in the postmenstrual period. <a href="/articles/sonohysterography">Sonohysterography</a> is the best for diagnosis. Less commonly used modalities include <a href="/articles/hysterosalpingogram">hysterosalpingography</a> and MRI.</p><p>It appears as a U or V shaped defect or a focal outpouching at the site of a prior caesarean section with &gt;2 mm depth, with the base at the endometrial cavity and apex towards the anterior wall of the isthmus.&nbsp;It may be located within the lower uterine segment or upper endocervical canal.</p><h4>Treatment and prognosis</h4><p>Surgical options are only for symptomatic patients and include <sup>3</sup>:</p><ul>
  • -<li><p><a href="/articles/gartner-duct-cyst">Gartner duct cyst</a>: long, tubular structure parallel to the uterine cavity</p></li>
  • -<li><p><a href="/articles/adenomyotic-cyst" title="Adenomyotic cyst">adenomyotic cyst</a>: defect can be located anywhere along the uterine cavity</p></li>
  • +<li><p><a href="/articles/gartner-duct-cyst">Gartner duct cyst</a>:&nbsp;long, tubular structure parallel to the uterine cavity</p></li>
  • +<li><p><a href="/articles/adenomyotic-cyst" title="Adenomyotic cyst">adenomyotic cyst</a>:&nbsp;defect can be located anywhere along the uterine cavity</p></li>
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Image 4 Fluoroscopy (Frontal) ( create )

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Case 4
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