Patient's question:
At 26 weeks of pregnancy, the fetus's biparietal diameter is 6.1 cm, the femur length is 4.1 cm, the humerus is 3.8 cm, the abdominal circumference is 20.7 cm, and the amniotic fluid depth is 4.7 cm. The ultrasound report shows that the baby is only 24 weeks and 4 days old. Is it overall smaller or are the hands and feet shorter? Is it within normal range? Could it be a case of dwarfism?Doctor's answer:
I'm glad to help you with your question. If estimated based on your last menstrual period, this baby is 26 weeks, but the detailed ultrasound examination shows it to be more than 24 weeks. Overall, this baby should be about 10 days smaller. From the perspective of test indicators, this is an overall indicator of being smaller rather than having short limbs. However, there is one point that needs to be brought to your attention: if your menstrual cycle is not very accurate, it is possible that the timing of the fertilized egg implantation was later, which may result in the fetal growth and development indicators being slightly smaller than the estimated gestational age. This is also a normal phenomenon and there is no need to be overly anxious. The only thing that requires special attention is that during the detailed ultrasound examination, if the estimated size of the fetus differs from the actual estimated indicators based on the last menstrual period by two weeks, it is still within the normal range.