Pregnancy and/or nursing femalesXx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXPregnancyXx_NEWLINE_xX18. Pregnancy or breastfeeding women.Xx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy or active breastfeedingXx_NEWLINE_xXPregnancy:Xx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy -Xx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy or breastfeeding.Xx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXPregnancy or breastfeeding.Xx_NEWLINE_xXDONOR: PregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy at the time of enrollmentXx_NEWLINE_xXPregnancy or breastfeeding.Xx_NEWLINE_xXPregnancy or breastfeeding.Xx_NEWLINE_xXPregnancy or breastfeeding patients.Xx_NEWLINE_xXPregnancy, lactating or breastfeeding womenXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnant or breast-feeding. (While pregnancy is unlikely in view of the disease and previous surgery, subjects whom the investigator considers may be at risk of pregnancy will have a pregnancy [beta-HCG] test and will be using a medically approved contraceptive method).Xx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy and/or lactating.Xx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXSubject that is pregnancy or lactatingXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXIf female, no pregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy or breastfeeding; female patients who are post-menarchal must have a documented negative pregnancy testXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy or breastfeeding.Xx_NEWLINE_xXDONOR: Pregnancy or nursingXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPatient pregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy or nursing patients will be excluded from the studyXx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXPregnancy or nursingXx_NEWLINE_xXPregnancy or nursingXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy or inadequate contraception.Xx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXPregnancy.Xx_NEWLINE_xXPregnancy or active breastfeedingXx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXPregnancyXx_NEWLINE_xXCurrent pregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXDONOR: PregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy or nursing MotherXx_NEWLINE_xXPregnancy: All subjects will have a beta-human chorionic gonadotropin (hCG) serum pregnancy test to rule out pregnancy, a history will also be taken to make certain that recent sexual exposure does not put them at risk for pregnancy; if so a second serum pregnancy test will be done; volunteers will be asked to use barrier contraception during studyXx_NEWLINE_xXCurrent pregnancyXx_NEWLINE_xXDonors: PregnancyXx_NEWLINE_xXPregnancy.Xx_NEWLINE_xXPregnancy or breastfeeding.Xx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXPregnancy, or planning to become pregnantXx_NEWLINE_xXagree to ongoing pregnancy testingXx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXDONOR: PregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXCurrent pregnancy or breastfeedingXx_NEWLINE_xXPregnancy or nursingXx_NEWLINE_xXPregnancyXx_NEWLINE_xXSelf-reported pregnancy or breastfeeding or planning a pregnancy within the next two yearsXx_NEWLINE_xXPregnancy as determined by pregnancy test or nursing;Xx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy and/or lactatingXx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXCurrent pregnancyXx_NEWLINE_xXDONOR: PregnancyXx_NEWLINE_xXDONOR: PregnancyXx_NEWLINE_xXDONOR: PregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXDONOR: Current pregnancyXx_NEWLINE_xXPregnancy or breastfeeding.Xx_NEWLINE_xXPregnancy or breastfeeding;Xx_NEWLINE_xXFemales of childbearing potential must undergo pregnancy testing based on the frequency outlined in Pregnancy Prevention Risk Minimization Plan and pregnancy results must be negative.Xx_NEWLINE_xXPregnancy and/or nursing mothersXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy or nursingXx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXWomen with a confirmed intrauterine pregnancyXx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXKnown pregnancyXx_NEWLINE_xXFemales of childbearing potential (FCBP) must undergo pregnancy testing based on the frequency outlined in the Pregnancy Prevention Risk Management Plan (PPRMP) and pregnancy results must be negative.Xx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXPregnancy;Xx_NEWLINE_xXAvoid pregnancyXx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXPregnancy or planning to become pregnantXx_NEWLINE_xXPregnancy or breastfeeding;Xx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy:Xx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy or breast-feeding; radiation therapy to the pelvis is contraindicated during any stage of pregnancyXx_NEWLINE_xXCurrent pregnancy or breastfeedingXx_NEWLINE_xXCurrent pregnancyXx_NEWLINE_xXCurrent or recent pregnancy (within 12 months),Xx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy or breastfeeding - menstruating females must have a negative pregnancy test prior to study enrollment and agree to repeat pregnancy testing and contraception use per protocolXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXKnown pregnancy or nursingXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXKnown pregnancyXx_NEWLINE_xXCandidate for pregnancyXx_NEWLINE_xXCurrent pregnancyXx_NEWLINE_xXPregnancy.Xx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXCurrent/recent (prior 12 months) pregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXActive pregnancyXx_NEWLINE_xXPatients who are known to be pregnant or who are breastfeeding; patients will be asked about pregnancy status and a pregnancy test will be performed only if there is a high probability of pregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXCurrent pregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXDONOR: PregnancyXx_NEWLINE_xXCurrently pregnant or within 3 months post-partum, or unwilling to undergo pregnancy testing or report possible pregnancy promptlyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXPregnancy, confirmed by a negative pregnancy test within 30 days of study enrollmentXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXCurrent pregnancy or breastfeedingXx_NEWLINE_xXPregnancyXx_NEWLINE_xXDONOR: PregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy at any point during the study period OR considering pregnancy during the study periodXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy, breast feeding, or planning pregnancy within 1 yearXx_NEWLINE_xXKnown current pregnancy; a pregnancy test is not required for this exclusion criteriaXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy, or positive pregnancy testXx_NEWLINE_xXPregnancy or nursing patients will be excluded from the study; a pregnancy test will be done prior to the MR examination for postmenarchal teenage girls, in whom pregnancy may be possible; only patients with a negative pregnancy test will be included in the studyXx_NEWLINE_xXPregnancy or nursing patients will be excluded from the study; a pregnancy test will be done prior to the MR examination for postmenarchal teenage girls, in whom pregnancy may be possible; only patients with a negative pregnancy test will be included in the studyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy or nursing patientsXx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXDONOR: Pregnancy or breastfeedingXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy;Xx_NEWLINE_xXPregnancy or nursing mothersXx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy or active breastfeedingXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXKnown pregnancy at study Visit 1.Xx_NEWLINE_xXPregnancy or breastfeedingXx_NEWLINE_xXSelf-reported pregnancy or breastfeeding or planning a pregnancy within the next yearXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancyXx_NEWLINE_xXPregnancy, or positive pregnancy testXx_NEWLINE_xX