Snapshot A 24-year-old G2P0 woman presents to the obstetrician at 25 weeks gestation. She complains that her abdomen seems to have rapidly enlarged over the past 2 weeks. An ultrasound is performed and is notable for polyhydramnios in 1 sac, explaining her enlarged abdomen, and oligohydramnios in the other sac, causing it to be stuck to the anterior uterine wall (see image). Introduction Overview login to view 1 more bullet Epidemiology Incidence login to view 1 more bullet ETIOLOGY Pathophysiology login to view 8 more bullets Imaging Ultrasound login to view 7 more bullets Treatment Procedural login to view 6 more bullets