A full-term neonate develops progressive abdominal distension and bilious vomiting on day 2 of life. Contrast enema shows microcolon with inspissated meconium pellets in the terminal ileum. The infant is known to have cystic fibrosis. What is the diagnosis?
- A Meconium plug syndrome
- B Meconium ileus ✓
- C Small left colon syndrome
- D Colonic atresia
Correct answer: B. Meconium ileus
Explanation
Meconium ileus is intestinal obstruction due to inspissated meconium in the terminal ileum, classically associated with cystic fibrosis. Contrast enema shows microcolon (unused colon) and meconium pellets. Meconium plug syndrome occurs without cystic fibrosis and typically resolves with contrast enema. Small left colon syndrome is seen in infants of diabetic mothers.
Reference: Coran's Pediatric Surgery, 7th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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