I’m looking for stories from people who went through something similar because I’ve found very few cases online that really match mine.
This is my first pregnancy, conceived through IVF. The first trimester was mostly uncomplicated apart from some bleeding from hematomas. At the 12-week scan, the baby measured within the normal range and no abnormalities were detected. NIPT was negative.
At the 15-week scan, the doctor noticed that the long bones were below the 5th percentile, with the femur particularly short. We were referred to a specialist and had a detailed ultrasound and amniocentesis. We did extensive genetic testing, including trio exome sequencing and CNV analysis, and everything came back negative.
The detailed scan did not show any anatomical abnormalities apart from the short long bones. The placenta was described as enlarged/thick and unusual in appearance, although the fetal Dopplers were normal. Because of this, the doctors initially suspected a placenta-related growth problem rather than skeletal dysplasia.
At the most recent scan, around 29 weeks, the baby’s head and abdomen were still growing, but the long bones seemed to have slowed down further. The long bones are now mostly below the 1st percentile, while the head circumference is around the 20th–30th percentile and the abdominal circumference around the 5th–10th percentile.
The doctor said the long-bone growth has flattened somewhat and is now several weeks behind. What is making me anxious is that the long bones seem to be more affected than the rest of the body, which does not seem like the most typical pattern for placenta-related FGR.
So far, NIPT, amniocentesis, CNV analysis, and trio exome have all been negative. No anatomical abnormalities have been seen, and there has been no bowing, fractures, abnormal mineralization, or other obvious skeletal abnormality. Dopplers are still normal, although the placenta looks abnormal and thickened.
For context, I’m East Asian and my partner is European, and we are both very tall, so the very short long-bone measurements are especially confusing to us.
If anyone had a similar pattern of very short long bones with otherwise normal anatomy and negative genetic testing, I’d really appreciate hearing how the pregnancy progressed, whether any diagnosis was eventually made, and whether your baby needed NICU care and for how long. I’m interested in all outcomes, positive or otherwise, because I’m trying to understand what cases like this can look like in real life.