Case 1: A 31-year-old pregnant Chinese woman (gravida 2 para 0) at 13 + 5 wk of gestation presented with intermittent dysuria for 1 mo and vaginal bleeding for 3 d and was admitted to the Obstetrics Department on October 8, 2018.
Case 3: A 31-year-old pregnant woman (gravida 3 para 1, abortion 1) at 14 + 5 wk of gestation presented with constipation and no bowel movements for 10 d and was admitted to the Obstetrics Department on February 8, 2011.