Inflammatory Bowel Disease USMLE Step 1 Practice Question
A 3-day-old premature infant born at 28 weeks gestation presents with abdominal distension, feeding intolerance, and lethargy. Vital signs show temperature 36.8°C, heart rate 165/min, respiratory rate 48/min, and blood pressure 52/35 mmHg. The infant has passed bloody stools. Abdominal examination reveals distension without rebound tenderness. Abdominal radiograph demonstrates pneumatosis intestinalis. Laboratory studies show thrombocytopenia at 95,000/μL. Which of the following is the most likely diagnosis?
Answer choices
- AMalrotation with volvulus
- BNecrotizing enterocolitisCorrect answer
- CIntussusception
- DDuodenal atresia
- EHirschsprung disease
- FSpontaneous intestinal perforation
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