Inclusion Criteria

- ELIGIBILITY CRITERIA:

Inclusion Criteria - Menstrual Cycle Study:

To participate in the Menstrual Cycle Pilot Study, a woman must:

Must be at least 25 years of age (or 5 years younger than the age at diagnosis of the
youngest family member with a tumor associated with the Breast-Ovarian Cancer Syndrome)
and less than 46 years of age.

Must be premenopausal as determined by menstrual history (no change in menstrual pattern
in prior 6 months) and an FSH level less than 15 mIU/ml obtained on the third day of the
menstrual cycle.

Have undergone genetic counseling and risk assessment.

Must be a known mutation carrier or be a first- or second-degree relative of an individual
with a tumor associated with the Breast-Ovarian Cancer Syndrome in a family with a known
BRCA mutation.

Agree to release of genetic test result for stratification purposes, whether or not she
has chosen to receive individual test results for clinical decision-making.

Be willing to use non-hormonal methods of contraception until completion of the 3 month
follow-up studies.

Have an ECOG performance status of 0-1.

Be able to provide informed consent.

Exclusion Criteria - Menstrual Cycle Study:

Any of the following will result in exclusion from the Menstrual Cycle Pilot Study:

A history of menstrual cycle irregularities over the previous 6 months, including history
of cycles less than 26 days or more than 35 days.

Steroid therapy, use of selective estrogen receptor modulators (SERMs) or hormonal agents
(including tamoxifen, raloxifene, estrogen, DHEA, anabolic steroids, oral contraceptives,
depoprovera, progestin IUD, oral progestins, norplant, or drugs to induce ovulation)
within 6 months prior to study entry and must agree not to use these compounds until
completion of the three-month follow-up study.

Pregnancy or lactation within 12 months of enrollment.

History of infertility with a suspected ovarian etiology or persistent ovarian cyst.

Abnormal CA-125 level.

History of invasive cancer except for non-melanoma skin cancer or cervical carcinoma in
situ.

Creatinine greater than 2.

Previous bilateral mastectomy, bilateral radiation therapy to the breast, or oophorectomy.

History of DCIS or LCIS .

Weight over 136 kilograms.

Allergy to gadolinium.

Allergy to lidocaine or Marcaine (bupivacaine) (excluded from breast duct lavage only).

Medical or psychiatric disorder which, in the opinion of the Principal Investigator, would
preclude informed consent or ability to participate in clinical research.

Inclusion Criteria - Training Cohort:

To participate in the Training Cohort a volunteer must:

- Be female and at least 18 years and less than 51 years of age.

- Have at least one breast considered eligible for study.

- Provide evidence (either films or radiologist's report) of a mammogram done within
the 12 months prior to enrollment showing low or no suspicion of carcinoma in at
least one breast. (Mammograms will not be provided to participants as part of the
training cohort.)

- Have a physical examination of the breast to be studied consistent with low or no
suspicion of carcinoma at the time of enrollment.

- Provide the name of a primary care physician to whom the results of breast duct
lavage cytologies can be sent.

- Have signed the informed consent for breast duct lavage.

Exclusion Criteria - Training Cohort:

Any of the following will exclude a potential participant from the Training Cohort:

- Pregnancy or lactation within the past 12 prior to enrollment.

- Subareolar or other surgery of the breast to be studied (papilloma resection, biopsy
or fine needle aspirations which might disrupt the ductal systems within 2 cm of the
nipple. (Biopsies of fine needle aspirations of the breast greater than or equal to
2 cm from the nipple are acceptable.)

- A breast implant or prior silicone injections in the breast to be studied.

- Radiation therapy to a breast to be studied.

- Active infections or inflammation in a breast to be studied.

- Chemotherapy or a selective estrogen receptor modifier (e.g., tamoxifen or raloxifen)
taken within 12 months prior to enrollment.

- A known allergy to lidocaine, prilocaine or Marcaine (bupivacaine).