A 2-day-old male newborn presents with persistent nonbilious vomiting after each feeding. Vital signs show HR 155 bpm, RR 42/min, temp 37.2°C, BP 65/40 mmHg. Upper GI imaging reveals circumferential narrowing of the second portion of the duodenum by pancreatic tissue. Serum electrolytes show hypochloremic hypokalemic metabolic alkalosis. No bilious drainage noted. Which embryologic abnormality most likely caused this anatomic finding?
- A)Failure of fusion of pancreatic buds
- B)Failure of recanalization
- C)Abnormal migration of ventral pancreatic budGABARITO
- D)Frontonasal prominence
- E)Lateral palatine shelves
Explicação
Annular pancreas occurs when the ventral pancreatic bud migrates abnormally and encircles the duodenum. This can produce duodenal obstruction in the neonatal period with early vomiting. Ver explicação completa e trilha adaptativa →