Consider the possibility that your baby’s biparietal diameter of 9.93 centimeters may be abnormal. Generally speaking, after full term, the standard biparietal diameter of the fetus is 8.37-9.63 centimeters. If it exceeds 9.63 cm, the baby’s biparietal diameter is considered to be relatively large, which may lead to cephalopelvic disproportion or the possibility of fetal macrosomia, which may easily lead to shoulder dystocia, asphyxia and other risks for the baby. Ultrasound suggests that the fetal biparietal diameter of 9.93 centimeters may also have some error, and its measurement can be affected by a variety of factors. Especially after the fetus has entered the pelvis, the measurement of biparietal diameter by color ultrasound is more prone to errors. It is possible that the true diameter of the fetus is not as large as it should be. Pregnant women are advised to pay attention to regular checkups. If the baby’s biparietal diameter is found to be large, it is recommended to consult a specialist according to your situation and actively cooperate with the doctor to choose a suitable delivery method for you.