What radiographic finding is hallmark of necrotizing enterocolitis (NEC)?

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Multiple Choice

What radiographic finding is hallmark of necrotizing enterocolitis (NEC)?

Explanation:
Pneumatosis intestinalis—the presence of gas within the bowel wall on abdominal radiographs—is the hallmark finding in NEC. This gas inside the bowel wall occurs when necrotic intestinal mucosa allows gas produced by bacteria to dissect into the submucosa and subserosa, producing visible linear or bubbly lucencies along the bowel. It is highly specific for NEC in neonates, often arising early in the disease before other complications. Portal venous gas can occur with NEC and suggests more extensive involvement, but it’s not as specific as intramural gas. Pneumoperitoneum indicates perforation, a serious complication rather than the diagnostic hallmark. Calcifications are not characteristic of NEC.

Pneumatosis intestinalis—the presence of gas within the bowel wall on abdominal radiographs—is the hallmark finding in NEC. This gas inside the bowel wall occurs when necrotic intestinal mucosa allows gas produced by bacteria to dissect into the submucosa and subserosa, producing visible linear or bubbly lucencies along the bowel. It is highly specific for NEC in neonates, often arising early in the disease before other complications. Portal venous gas can occur with NEC and suggests more extensive involvement, but it’s not as specific as intramural gas. Pneumoperitoneum indicates perforation, a serious complication rather than the diagnostic hallmark. Calcifications are not characteristic of NEC.

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