system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 3-day-old boy is brought to the pediatrician for nonpigmented vomiting for the last day. A detailed developmental history reveals that his parents have a nonconsanguineous marriage. He was born by cesarean section at 36 weeks of gestation. His birth weight was 2.6 kg (5.7 lb) and he has been breastfed exclusively. His temperature is 37.0ºC (98.6°F), pulse is 120/min, and respiratory rate is 35/min. On physical examination, a distended abdomen and signs of dehydration are present. On abdominal imaging, a ‘double bubble’ sign and upper intestinal obstruction is present. Abdominal computed tomography shows narrowing of the second part of the duodenum. Barium enema shows normal rotation of the colon. Which of the following is most likely cause of intestinal obstruction in this patient?
assistant
Annular pancreas