Gastrointestinal Practice Questions Related

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A male infant, who was normal for the first three weeks of life, develops projectile vomiting after feeding. The likely diagnosis is:

  • A. Meckel's diverticulum
  • B. esophageal atresia
  • C. congenital diaphragmatic hernia
  • D. congenital pyloric stenosis
Correct Answer: D

Rationale: The correct answer is D, congenital pyloric stenosis. This condition typically presents in male infants around 3-6 weeks of age with projectile vomiting due to hypertrophy of the pyloric muscle, leading to obstruction at the pylorus. This causes the infant to forcefully vomit shortly after feeding. Meckel's diverticulum (A) presents with painless rectal bleeding. Esophageal atresia (B) presents with drooling and choking with feeding. Congenital diaphragmatic hernia (C) presents with respiratory distress and scaphoid abdomen due to herniation of abdominal organs into the chest cavity.