A 16-year-old obese primigravida girl comes to the emergency d | Uworld | Step 1

A 16-year-old obese primigravida girl comes to the emergency department in active labor. In an attempt to conceal the pregnancy from her family, the patient did not receive prenatal care or take prenatal vitamins. A fetal heartbeat is undetectable, and she delivers a stillborn boy via vaginal delivery. Examination of the stillborn shows several dysmorphic features including closely set eyes and a midline mass consistent with a proboscis. A fetal autopsy reveals fused cerebral hemispheres with an absent forebrain fissure and a single intracranial ventricle.