Meconium peritonitis

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[edit] Discussion

  • Results from intrauterine GI perforation.
  • Initially, it is a sterile chemical peritonitis, but if perforation of the GI tract persists after birth, complicating bacterial infection may supervene.
  • Perforation and subsequent meconium peritonitis can occur from many causes
    • Obstruction and/or volvulus associated with meconium ileus is the most common cause.
    • Also may result from other causes of neonatal bowel obstruction (i.e. intestinal atresia).
  • In some cases, fluid and meconium can pass into the chest, presumably through congenital communications, resulting in meconium thorax.

[edit] Imaging Findings

[edit] Plain film

  • Amorphous and irregular or curvilinear abdominal calcifications, with the latter suggesting cystic loculation or coating of the peritoneum (i.e. pseudocyst)
  • Negative is mecomium does not calcify.
  • Eventually, most of the calcification in meconium peritonitis slowly disappears

[edit] Images

Patient #1: Abdominal calcifications seen on prenatal ultrasound

Patient #2

[edit] See Also

[edit] External Links

[edit] References