USMLE® Step 1 style questions USMLE
USMLE® Step 2 style questions USMLE
A 35-year-old woman, gravida 1, para 0, comes to the hospital and is admitted to the labor and delivery service. The patient has not received any prenatal care. After an uncomplicated vaginal delivery, several anomalies are noted during the child's newborn examination. On examination, the boy has hypoplastic thumbs, an imperforate anus, and supernumerary vertebrae. Which of the following anomalies is most likely also associated with these clinical findings?