End
1 :

Hint : 🧠No ganglion = no push.

Correct Answers:

  • Hirschsprung's disease


Rationale :

🔷 Hirschsprung’s disease occurs when ganglion cells are absent in a segment of the bowel, causing loss of peristalsis in that area.

🔷 Without normal enteric nerve stimulation, the affected segment stays tonically contracted, creating a functional mechanical obstruction.

🔷 Stool and gas cannot pass easily, so the bowel above the defect becomes distended from backup.

🔷 This condition is classically linked to delayed passage of meconium, abdominal distention, and chronic constipation in infants.

🔷 The key concept is intestinal “inadequate motility” in one segment leading to obstruction—this directly matches Hirschsprung’s.

Encopresis

🔷This is involuntary stool soiling (often from chronic constipation) and is not caused by an aganglionic bowel segment.

🔷 It reflects overflow leakage, not a primary intestinal motility defect creating obstruction.

Enterocolitis

🔷This is inflammation/infection of the intestines, not “inadequate motility of part of the intestine” causing obstruction.

🔷 While Hirschsprung-associated enterocolitis can occur, enterocolitis itself is not the motility-based mechanical obstruction described.

Pyloric stenosis

🔷This is hypertrophy of the pylorus causing gastric outlet obstruction, not an intestinal segment motility problem.

🔷 It presents with projectile nonbilious vomiting rather than a lower intestinal obstruction from absent peristalsis.


Distractor Analysis :

Rationale for Incorrect Options to be Available Soon

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