Laura, it will depend on the dose she received at the time of irradiation.
I expect it was collimated and therefore she should have received a
significant dose to the breast glandular tissue, as Dr Vaughn mentioned in
her reply. At the time of irradiation she was 19 years old. Her breasts
were not in the initial stages of development but they were not yet fully
developed.This is better than irradiation at a younger age.

There is evidence that radiation therapy to the chest for Hodgkins lymphoma
increases the incidence of breast cancer. Therefore, there is some
irradiation to the breast. However doses that lead to stochastic effects
are much lower than doses that yield deterministic damage to the glandular
tissue. However, I have found through a quick search that radiation therapy
to the chest may lead to irritation in the esophagus. That is deterministic
and implies higher doses. The same applies to cardiovascular problems.
Therefore, to be sure, the history of irradiation is necessary.

Veronica

Veronica Garea, ME (Nuclear Eng.), MS, PHD (Engineering Physics), IBCLC


> Date:    Fri, 13 Dec 2013 14:42:45 +0000
> From:    "Walker, Laura (Our Lady of Lourdes Memorial Hospital/Binghamton)"
>          <[log in to unmask]>
> Subject: Past history of radiation
>
> Good Morning All,
>
> I received a call from a mom yesterday whose provider referred her.  She
> is 33, pregnant with twins due in Feb. '14.  She had Hodgkin's disease 14
> years ago and received radiation to the chest area between the notch of her
> neck and where the breasts begin.  The radiation wasn't to the breasts
> themselves.   She has had no size changes in her breasts during pregnancy
> and when I asked about infertility, this pregnancy is an IUI.  She had all
> kinds of tests done and nothing showed as to why pregnancy couldn't occur.
>  She's had regular periods since a teen.  Her history is negative for
> everything else.  Will her lactation be affected due to the radiation?
> Thank you for any info you can provide.
>
> Laura Walker RNC-LRN, IBCLC, RLC, CEIM
> Our Lady of Lourdes Memorial Hospital
> 169 Riverside Dr.
> Binghamton, NY 13905
> (607) 798-5423
> "A smile is a curve that sets everything straight"
>   Phyllis Diller
>
>
>
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