Solve exciting clinical cases specific to your field of interest via Docplexus` clinical case challenge. In today's ‘Gastroenterology Case Challenge’, join your fellow doctors to discuss and answer an interesting quiz related to pediatric gastroenterology. Medical History: A 3-day-old baby boy is brought to the emergency department (ED) by his parents with a 2-day history of feeding intolerance and persistent vomiting of green fluid. He was born full-term at 39 weeks' gestation; however, he was small for his gestational age, measuring 18.1 in (46 cm) and weighing 4.6 lb (2.1 kg).

The patient's prenatal history is noncontributory. The patient was delivered vaginally at home without any complications. He initially tolerated breastfeeding well and passed meconium during the first day of life. Since the second day of life, he has not tolerated breastfeeding and has been vomiting…