CAMRT Radiography Practice Exam

What is the characteristic radiographic appearance of an ileus?

1. Single air fluid level in the abdomen

2. Multiple air fluid levels throughout the abdomen

3. Normal gas pattern with some dilation

4. Localized swelling in the intestinal area

The correct answer is: Multiple air fluid levels throughout the abdomen

The characteristic radiographic appearance of an ileus is the presence of multiple air fluid levels throughout the abdomen. In cases of ileus, which is a type of intestinal obstruction caused by a temporary cessation of bowel activity, the intestines often exhibit a characteristic "stacked" appearance. This radiographic finding occurs because the intestines become distended with air and fluid due to the obstruction, leading to a buildup of these substances. As a result, multiple air-fluid levels may be visualized on an upright abdominal X-ray or in a cross-sectional imaging modality like a CT scan. This is different from other conditions, such as bowel obstruction due to a physical barrier, where typically only one air-fluid level is evident, or where the gas pattern might appear normal or only slightly changed. Understanding the distinction between this pattern and normal gas distribution helps radiologists and medical practitioners in diagnosing and managing bowel disorders effectively.