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.
Case 2: A 27-year-old pregnant Chinese nulligravida presented to the Obstetrics Department with intermittent urinary retention at 17 wk of gestation on December 26, 2018.