USMLE · Question #590
A 1-week-old male is brought to the emergency department by his mother due to persistent crying and bloody diarrhea. She says he was delivered at 33 weeks' gestation and has been bottle-fed since…
The correct answer is E. transmural necrosis. Necrotizing enterocolitis is usually seen in premature, formula-fed infants. Typically, the infants presents with severe abdominal distress in the first week of life. Intestinal is chemia and poor neonatal immune response contribute to the condition and both the small and large…
Question
A 1-week-old male is brought to the emergency department by his mother due to persistent crying and bloody diarrhea. She says he was delivered at 33 weeks' gestation and has been bottle-fed since then. Physical examination reveals a rigid abdomen. The neonate undergoes emergency surgery to resect a portion of his small intestine during which bowel perforation is confirmed. Microscopic examination of the excised bowel will most likely reveal:
Options
- Ainflammatory polyps
- Bmultiple diverticula
- Cneoplastic polyps
- Dthickened collagenous bands
- Etransmural necrosis
How the community answered
(31 responses)- A3% (1)
- B6% (2)
- C3% (1)
- D10% (3)
- E77% (24)
Explanation
Necrotizing enterocolitis is usually seen in premature, formula-fed infants. Typically, the infants presents with severe abdominal distress in the first week of life. Intestinal is chemia and poor neonatal immune response contribute to the condition and both the small and large bowel may be affected. Necrotizing enterocolitis may be complicated by necrosis of the intestinal mucosa with possible perforation which can lead to pneumatosis intestinalis seen on an abdominal X-ray.
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