FIG 2. Plot of postnatal growth rate of length of CC related to gestational age at birth in 64 very premature infants (32 boys) born at 23–33 weeks gestation. Dotted line represents the lower of 2 published growth rates of length of CC at prenatal sonography (13, 14). Growth rates are much lower (as much as 4-fold) in the very premature infant. Growth rate is from birth to term equivalency. The CC was measured by using cranial sonography.