R.R.
My grandson had IUGR - but not asymmetrical. Which I take to mean that parts of the baby are growing at different rates.
My GS was born at 34 weeks, and only weighed 3 pounds, 5 oz - and a normal 34 week baby is 4 and a half pounds. He had absolutely ZERO problems, not even with breathing. At 21 months, the only thing he is behind in is talking and his size. He is 21 pounds, so only 5% weight and about 10-15% height. He's a little guy, but perfectly healthy!