contrast enema
Radiological examination using contrast material introduced through the rectum to visualize the colon.
Full Definition
A diagnostic imaging procedure that involves the introduction of contrast material (barium or water-soluble contrast) through the rectum to visualize the anatomy and function of the large intestine. In pediatric gastroenterology, contrast enemas are commonly used to diagnose Hirschsprung disease, evaluate for colonic strictures, assess anastomotic integrity, or investigate lower gastrointestinal bleeding. The procedure may be performed as a single-contrast or double-contrast study depending on the clinical indication. In infants, the osmotic effect of contrast may help reduce intussusception. Preparation typically involves bowel cleansing, though this may be modified in pediatric patients.
Usage
Usage note: Specify type of contrast agent used when relevant to clinical interpretation.
In Context
- "Contrast enema demonstrated a transition zone consistent with Hirschsprung disease." — Radiology report
- "The patient will undergo contrast enema to evaluate the integrity of the colonic anastomosis." — Pre-procedure planning