Ultrasonography and computed tomography of inflammatory abdominal wall lesions.

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Abstract
Twenty-four patients with inflammatory lesions of the abdominal wall were examined by ultrasonography. Nine of these patients underwent computed tomographic (CT) scanning as well. Both ultrasonography and CT clearly delineated the exact location and extent of abdominal wall abscesses. Abscesses were easily differentiated from cellulitis or phlegmon with ultrasound. The peritoneal line was more clearly delineated on ultrasonograms than on CT scans; abscesses were also more distinct on the ultrasonograms because their low echogenicity compared with the surrounding structures. Gas bubbles, fat density with specific low attenuation values and underlying inflamed bowel loops in obese patients with Crohn''s disease were better delineated by CT.

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