Dwarfism? Downs Syndrome? Or other?

[Onwithnumber2]

I have posted in antenatal tests but thought I may get feedback from someone who has experienced this and is a few years down the line if I post here.

I am pregnant and had a growth scan yesterday at 36 weeks + 3 and was told the baby's head circumference is measuring at 322mm (36th percentile), his abdominal circumference is 298mm (26th percentile) and his femur length is only 60mm. It's not even on the line, there's the diamond to show the measurement, a big gap and then the line starts.
The sonogropher measured his humerus length too and that was also short at 56mm but at least made it just onto the line at 7th percentile.

She said she would let the foetal consultant know the measurements and see what she wanted to do. Before we had even got down the road from the hospital we were called to say she wanted to see us on Monday for another scan.

Other than that we have had no information whatsoever, it's only from googling that I've found it could be maybe dwarfism or Down's syndrome? I can't really find anything except other message board posts though and I just wish I knew what we were looking at here. Do these measurements sound similar to anything anyone else has experienced?
I suffer from anxiety and I'm the kind of person who really has to arm herself with information for everything and the not knowing is really upsetting me. I know by Monday I'll know more but these next few days are going to be so hard.

Thank you.

Congratulations . Enjoy your LO and look after yourself.

Congratulations!

Congratulations!

Congratulations! It must all have been a shock and although you have a happy outcome you may experience after effects of shock so go gently on yourself and enjoy your little boy xxx

Fab! Nice to hear this update

Oh brilliant! Many congratulations and enjoy the cuddles .

Oh goodness, what a rollercoaster! Congratulations and glad to hear of the safe arrival of your LO.

Fabulous news xxx

Hi - OP here.
I just wanted to post an update just in case anyone in the future with scan measurements similar to mine ever comes across it.

So we spent the first six months of DS2’s life thinking he was just small. Then his cousin was born and was the same length as him, so we started to question dwarfism again.

At 7 months he started having seizures where he would turn limp and white/grey. In the hospital the dr said she could see he was disproportionate and the seizures were linked to some kinds of dwarfism. Over his first year his head jumped up the chart rapidly whereas his height slowed and plateaued.

There are 400+ types of dwarfism so it has been a hell of an 8 months testing for all sorts but he has finally been diagnosed with Hypochondroplasia. We think he has outgrown the seizures now and although he’s little - he’s 16 months and his 6 month old baby buddy is the same height as him- and he has shorter limbs and a bigger head than average but he’s getting on so great. We are thrilled to bits with the diagnosis as we have a really brilliant support network of others across the world with the condition and we’re won’t let it hold him back in life 😊

Some of the theories have been a lot scarier so we are really so blessed with this outcome.

If anyone reads this in the future going through the same, I’d say be aware that there are many many forms of dwarfism that are not obvious at all at birth. Also join the “POLP on Facebook” group (parents of little people” as there are so many of us there looking forward to welcoming you and answering any and all questions you have. When you know what you’re dealing with it’s really not so bad after all.

I'm so glad you are all in a good place.

with your support he will go far! fear of unknown can be harder than dealing with reality...a network of people is fantastic. (and great excuse for travelling the world to meet them all!) good luck .

Yes absolutely! Thank you so much