This question was recently posed by an IBCLC-to-be in one of our courses 
and I'm unable to answer it. I haven't read of preterm birth being a 
problem for breast development in the future so assume that it isn't. Can 
anyone tell us more about the effect of the premature loss of these 
placental hormones on breast mammogenesis?

"In Lawrence it says that at 28 weeks gestation placental sex hormones 
enter the fetal circulation and induce canalization + the  ductal lumens 
are formed after 32 weeks of gestation. Now my question is, is there an 
effect on normal breast development in women born premature i.e. around 28 
weeks - once out of the uterus the placental hormones are no longer 
available to drive this process? Is this compensated for postnatally in 
premature infants (I'm thinking later during puberty / pregnancy)?"

Thank you.
Denise

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Denise Fisher
Health e-Learning
http://www.health-e-learning.com

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