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 19-year-old woman, gravida 1, para 0, at 21 weeks’ gestation comes to the physician for a follow-up prenatal visit. At her previous appointment, her serum α-fetoprotein concentration was elevated. She had smoked 1 pack of cigarettes daily for 3 years but quit at 6 weeks' gestation. Examination shows a uterus consistent in size with a 21-week gestation. Ultrasonography shows fetal viscera suspended freely into the amniotic cavity. Which of the following is the most likely diagnosis?
assistant
Gastroschisis