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Extraperitoneal gas: compartmental localization and identification of source
Journal of the Canadian Association of Radiologists
|March 1, 1985
Summary
Plain films revealed extraperitoneal gas collections in 24 patients. The most common locations were the anterior pararenal space and posterior pararenal space, often caused by gastrointestinal perforation.
Area of Science:
- Radiology
- Gastroenterology
- Abdominal Imaging
Background:
- Extraperitoneal gas collections can indicate serious intra-abdominal pathology.
- Accurate localization and identification of the source are crucial for patient management.
Purpose of the Study:
- To evaluate the utility of plain abdominal and chest films in diagnosing and localizing extraperitoneal gas collections.
- To determine the common causes of extraperitoneal gas.
Main Methods:
- Retrospective review of plain abdominal and chest films from 24 patients with documented extraperitoneal gas.
- Analysis of gas compartmentalization and correlation with clinical findings.
Main Results:
- Extraperitoneal gas was identified in the anterior pararenal space (10 patients), perirenal space (5 patients), and posterior pararenal space (15 patients).
- Six patients had gas in two compartments.
- Common etiologies included retroperitoneal alimentary tract perforation (11 patients), necrotizing pancreatitis (5 patients), and gas-producing infections (4 patients).
Conclusions:
- Plain films are effective in detecting and localizing extraperitoneal gas collections.
- Gastrointestinal perforation is a frequent cause of extraperitoneal gas, necessitating prompt diagnosis and intervention.