Distended loops of air-filled bowel and increased subject contrast throughout the abdomen indicate which pathology?

Distended loops of air-filled bowel and increased subject contrast throughout the abdomen indicate which pathology?

• A. Bowel obstruction
• B. Ascites
• C. Pleural effusion
• D. Hepatic carcinoma

Answer: (A)

Distended loops of air-filled bowel reflect a blockage in the intestinal tract. When something obstructs the bowel, gas and contents build up before the obstruction, causing proximal segments to swell. Those gas-filled loops create strong contrast against the surrounding soft tissues, so the bowel stands out prominently on the film—hence the increased subject contrast throughout the abdomen. This pattern is characteristic of a mechanical bowel obstruction, especially when you see multiple dilated loops and, on an upright view, air-fluid levels. It wouldn’t be explained by ascites, which shows fluid layering and diffuse haziness; pleural effusion affects the chest; or hepatic carcinoma, which appears as a mass rather than dilated gas-filled loops.

Distended loops of air-filled bowel reflect a blockage in the intestinal tract. When something obstructs the bowel, gas and contents build up before the obstruction, causing proximal segments to swell. Those gas-filled loops create strong contrast against the surrounding soft tissues, so the bowel stands out prominently on the film—hence the increased subject contrast throughout the abdomen. This pattern is characteristic of a mechanical bowel obstruction, especially when you see multiple dilated loops and, on an upright view, air-fluid levels. It wouldn’t be explained by ascites, which shows fluid layering and diffuse haziness; pleural effusion affects the chest; or hepatic carcinoma, which appears as a mass rather than dilated gas-filled loops.