> Have any of you ever heard of a child's breast preference making the
breasts permanently lopsided?

Hi Linda
While I am unable to comment on the lopsidedness, I would like to point out
that I have come across several cases where a baby refuses (partially or
totally) one breast and where the mother has been diagnosed with breast
cancer in that breast. Do you think this is worth exploring with the mother
you described?
see you

Ellen McIntyre
Dept of Community Medicine