Barium Perforation
Extraluminal Barium in the Peritoneal Cavity

 

 

General Considerations

  • Barium sulfate is used as a contrast agent for, amongst other things, barium enema examinations
  • It is inert, radiopaque and provides excellent anatomical detail
  • On very rare occasions, a perforation may occur allowing the administered barium to leak into the peritoneal cavity
  • Barium peritonitis may occur from an inflammatory reaction
    • Intestinal content, e.g. fecal material, which also spills into the peritoneal cavity at the same time may play a role in producing sepsis
    • “Sterile” barium contamination will still cause peritonitis, but it may not be accompanied by the same degree of sepsis
  • Perforations may occur
    • At the enema tip
    • From inflation of the retention balloon
    • From a recent full-thickness biopsy of the bowel
    • In diseased bowel, such as carcinoma, diverticulitis and ulcerative colitis
    • Rarely, from increased hydrostatic pressure

Clinical Findings

  • Signs of acute peritonitis minutes to hours after the study
  • Fluid is shifted into the peritoneal cavity by the body following a perforation
    • This can result in hypovolemia unless IV fluids are administered
  • Abdominal pain and distension
  • Rigidity

Imaging Findings

  • Barium may leak freely into the peritoneal cavity, coating the surface of the bowel and liver
  • Barium may also dissect into the wall
  • Rarely, the perforation may be retroperitoneal
  • Extraperitoneal perforations result in extra-luminal barium localized to the pelvis

 

Type of Contrast for Suspected Perforations

Suspected perforation of the

Use

Then

Pharynx or esophagus

Water-soluble contrast first

If negative, can use barium next

If aspiration is a concern

Barium or iso-osmolar water soluble contrast

If negative, then usually CT

Stomach or duodenum

Water-soluble contrast first

If negative, then usually CT

Colon

Water-soluble contrast

If negative, then usually CT

 

Differential Diagnosis

Treatment

  • Laparotomy for repair of the perforation
  • Removal of as much of the barium as possible

Complications

  • Granulomas with adhesions

Prognosis

  • Some studies have previously indicated a 50% mortality if both barium and feces were released into the peritoneal cavity

 

 


Barium in the peritoneal cavity.
The black arrows point to metallic density barium contrast that had spilled into the peritoneal cavity from a barium enema performed elsewhere 15 years earlier. The patient was having a CT urogram for an un-related problem. Note how the barium had flowed into the paracolic gutters and around loops of bowel.
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Williams SM, Harned RK. Recognition and prevention of barium complications. Curr Probl Diagn Radiol. 1991; 20(4):123-51.