Necrotizing enterocolitis vs Hirschsprung disease
How to tell Necrotizing enterocolitis and Hirschsprung disease apart when a board question makes them look alike.
NEC is premature inflammatory bowel injury with pneumatosis; Hirschsprung is aganglionic delayed-meconium obstruction.
Side by side
Premature infant with feeding intolerance, abdominal distension, bloody stools, systemic illness, and pneumatosis intestinalis.
Term newborn or infant with delayed meconium, chronic distension/constipation, transition zone, and absent ganglion cells.
Immature gut, dysbiosis, feeding, and ischemic-inflammatory injury damage bowel wall in vulnerable premature infants.
Neural crest migration failure leaves distal bowel aganglionic and tonically narrowed.
Pneumatosis intestinalis, portal venous gas, bloody stool, thrombocytopenia, or sepsis signs support NEC.
Rectal biopsy without ganglion cells and absent rectoanal inhibitory reflex support Hirschsprung disease.
The trap
Both can distend an infant abdomen, but prematurity/bloody pneumatosis differs from congenital aganglionosis.
The repair move
For neonatal distension, separate acquired premature bowel injury from congenital distal innervation failure.
Try a free question
CoreA premature infant develops feeding intolerance, abdominal distension, bloody stools, and pneumatosis intestinalis. Which diagnosis is most likely?
Show answer and explanation
Answer: A. Necrotizing enterocolitis. Necrotizing enterocolitis is a premature infant bowel injury pattern with pneumatosis intestinalis and systemic illness.
Why the other choices are tempting
- B. Hirschsprung is aganglionosis with delayed meconium and distal obstruction.
- C. Pyloric stenosis causes nonbilious projectile vomiting weeks after birth.
- D. Celiac disease causes chronic immune-mediated malabsorption.
- E. Meckel diverticulum causes painless bleeding from ectopic mucosa.
Flashcards
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What x-ray clue supports necrotizing enterocolitis?
Pneumatosis intestinalis, gas in the bowel wall, supports NEC.
What biopsy clue supports Hirschsprung disease?
Absence of ganglion cells supports Hirschsprung disease.
Quick answers
What is the fastest way to tell Necrotizing enterocolitis from Hirschsprung disease?
NEC is premature inflammatory bowel injury with pneumatosis; Hirschsprung is aganglionic delayed-meconium obstruction.
What is the key clue for Necrotizing enterocolitis?
Premature infant with feeding intolerance, abdominal distension, bloody stools, systemic illness, and pneumatosis intestinalis.
What is the key clue for Hirschsprung disease?
Term newborn or infant with delayed meconium, chronic distension/constipation, transition zone, and absent ganglion cells.
What is the common trap with Necrotizing enterocolitis vs Hirschsprung disease?
Both can distend an infant abdomen, but prematurity/bloody pneumatosis differs from congenital aganglionosis.