The low position of the placenta results in placental tissue covering the internal cervical os, or the inside the opening of ...

In high-risk pregnancies, an ultrasound to check the growth of the baby may be done in the third trimester, usually around 30 to 32 weeks. Based on the results, subsequent ultrasounds may also be ...

One of the more frustrating situations occurs when there is a significant difference between a late second- or early third-trimester ultrasound EDD and the reported LMP due date. This scenario is ...

Twins—smaller at birth, on average, than singletons—start out smaller in pregnancy than was previously known, according to a ...

In the third trimester, obstetricians may use a variation ... An MRI image can clarify the diagnosis of a fetal abnormality observed in an ultrasound and better prepare parents and their doctors ...

Allie, a 37-year-old bottlenose dolphin, has entered her third trimester of a 12-month pregnancy. She is expected to give birth in June.

NIH findings could lead to more efficient monitoring of twin pregnancies.

First-trimester physical examination ±2 weeks Second-trimester physical examination ±4 weeks Third-trimester physical ... If the difference is greater, use the ultrasound date Difference ...