pregnancy post breast irradiation

[Chris Alston <alstonc@odrge.odr.georgetown.edu>]

>Date:         Mon, 9 Mar 1998 09:56:09 -0500
>Reply-To: Medical Physics Mailing List <MEDPHYS@LISTS.WAYNE.EDU>
>Sender: Medical Physics Listserver <medphys@lists.wayne.edu>
>From: David McNally <DMcNall@SGHS.ORG>
>Subject:      pregnancy post breast irradiation
>To: Multiple recipients of list MEDPHYS <MEDPHYS@LISTS.WAYNE.EDU>
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>We have a patient who became pregnant about 6 weeks post irradiation
>to her breast of 5040 cGy using 6 Mv X ray.  She calculates back and did
>remember having a period after her radiation completed and discovered
>that she was 6 weeks pregnant about 3-4 months post irradiation which
>puts her conception date about 6 weeks out.
>
>I want to know what sort of estimated dose her ovaries/pelvis area might
>of received from breast irradiation?  Is there any substantial risks even if
>she did not become pregnant until 6 weeks post irradiation? For example,
>could her eggs have received any substantial amount causing
>degenerative processes?
>
>I read NCRP report 54 "Medical  Radiation Exposure of Pregnant and
>Potentially Pregnant Women" but it did not refer to any relations of
>therapeutic doses to breasts and becoming pregnant.
>
>thanks in advance for any references, advice or suggestions,
>david
>