Breast-Conserving Surgery and Radiation Therapy in Patients With Multiple Ipsilateral Breast Cancer
Breast-Conserving Surgery and Radiation Therapy in Patients With Multiple Ipsilateral Breast Cancer
RATIONALE: Breast-conserving surgery is a less invasive type of surgery for breast cancer and
 may have fewer side effects and improve recovery. Radiation therapy uses high-energy x rays
 to kill tumor cells. Giving radiation therapy after surgery may kill any tumor cells that
 remain after surgery.

 PURPOSE: This phase II trial studies how well breast-conserving surgery and radiation therapy
 work in treating patients with multiple ipsilateral breast cancer
OBJECTIVES:

 Primary

 -  To assess the local recurrence (LR) rate with breast-conservation in patients with
 multiple ipsilateral primary breast cancer (MIBC).

 Secondary

 -  To examine the conversion rate to mastectomy secondary to persistent positive margins;
 poor cosmesis within the first year of attempting breast-conservation surgery (BCS) or
 inability to satisfy the radiation dose constraints on the boost to the lumpectomy bed
 of each site of disease.

 -  To assess whether patients who did not undergo re-excision for close margins (< 2 mm)
 have a higher local recurrence (LR) rate than patients for whom negative margins were
 achieved.

 -  To assess patient's perception of cosmesis and incidence of breast lymphedema.

 -  To assess incidence of breast lymphedema

 -  To examine the type and severity of adverse effects of breast conserving surgery and
 radiation for women with multiple ipsilateral primary breast cancer (MIBC).

 -  To examine the radiation-related side effects of whole-breast radiation with a boost to
 1 large or > 1 lumpectomy site.

 OUTLINE: This is a multicenter study.

 Patients undergo breast-conserving surgery (BCS) with all lesions resected to negative
 margins using 1 lumpectomy or 2-3 separate lumpectomy incisions at the discretion of the
 surgeon. Patients receive adjuvant chemotherapy and/or endocrine therapy at the discretion of
 the treating medical oncologist based on tumor characteristics.
Registration Inclusion Criteria:

 1. Age ≥ 40 years per National Comprehensive Cancer Network (NCCN) recommendations for
 breast conservation.

 2. Life Expectancy of at least 5 years, excluding diagnosis of breast cancer (Comorbid
 conditions should be taken into consideration, but breast cancer diagnosis is not a
 consideration)

 3. Female Gender - Men are excluded from this study. Male breast cancer is a rare event.

 Men are rarely candidates for breast conservation surgery due to small breast size.
 Men are less likely to be candidates for breast conservation surgery if found to have
 MIBC.

 Men are rarely candidates for breast conservation surgery due to small breast size.
 Men are less likely to be candidates for breast conservation surgery if found to have
 MIBC.

 4. Foci of Breast Cancer

 4.1 Upon clinical exam and pre-operative imaging by mammogram +/- MRI, two or three
 foci of biopsy proven breast cancer separated by > 2 cm of normal breast tissue.

 4.2 Foci must include at least one focus of invasive breast carcinoma with another
 focus of either invasive breast carcinoma or ductal carcinoma in situ (DCIS).

 No more than 2 quadrants with biopsy proven breast cancer.

 4.3 Note: The shortest distance between lesions must be reported on mammogram +/- MRI
 and eligibility criteria must be met on both, if both are obtained.

 4.4 Note: Patient is eligible for study if lesion is not visualized on all imaging
 modalities (i.e., any of the lesion(s) is/are visualized on MRI but not on mammogram
 OR visualized on mammogram but not on MRI).

 4.5 Ultrasound cannot be used to determine patient eligibility; eligibility to be
 determined by bilateral mammogram +/- MRI only.

 4.6 Fine needle aspirate of the second or third lesion to document malignancy is
 allowed if the first focus is shown to be invasive by core needle biopsy.

 4.7 Patient may remain on study if, upon pathological assessment, two or three lesions
 identified on pre-operative imaging represent one contiguous lesion.

 5. Patients may be registered AFTER surgery and PRIOR TO radiation therapy if either of
 the criteria is met:

 5.1 An area of atypia > 2cm from the index lesion excised at the time of cancer
 operation is upgraded to DCIS or invasive carcinoma thereby identifying MIBC. OR

 5.2 Patient underwent resection of two or three foci of malignancy by breast
 conservation surgery with a minimum of one invasive focus of breast cancer and a
 minimum of 2 cm of normal breast tissue between the lesions on final pathology.

 6. Mammogram Imaging - Bilateral mammogram ≤ 90 days prior to date of surgery.

 6.1 Note: For patients undergoing more than 1 breast operation, this is the date of
 the first breast surgery for breast cancer treatment.

 7. Staging of Cancer - cN0 or cN1 disease

 8. ECOG Performance Status (PS) - 0, 1, or 2.

 9. Ability to Complete Questionnaires - Ability to complete questionnaire(s) by
 themselves or with assistance

 10. Ability to Provide Written Informed Consent

 11. Willing to Return to Enrolling Institution - Willing to return to enrolling
 institution for follow-up during the Active Monitoring Phase (the active treatment and
 observation portions) of the study. Patients are encouraged to return to the enrolling
 institution; however, patients may receive radiation therapy at a different
 institution other than the enrolling institution.

 Registration Exclusion Criteria:

 1. Pregnancy, Nursing and Requirement for Contraception - Pregnant women, nursing women
 and women of childbearing potential who are unwilling to employ adequate contraception
 (as determined by the treating physician) are excluded from participation.

 This study involves radiation therapy (WBI) that has known genotoxic, mutagenic and
 teratogenic effects.

 2. Size of Single Focus of Disease on Preoperative Imaging - Largest single focus of
 disease > 5 centimeters by either mammogram or MRI or both. Note: Measurement of the
 largest single focus should include any satellite lesions within 1 centimeter of the
 index lesion.

 3. Prior Staging Procedure - Surgical axillary staging procedure prior to first
 definitive breast operation. Note: FNA or core needle biopsy of axillary node is
 permitted.

 4. Evidence of Metastatic Disease - Clinical or radiographic evidence of metastatic
 disease

 5. Prior History of Breast Cancer - Prior history of ipsilateral breast cancer [DCIS,
 LCIS (lobular cancer in situ) or invasive]

 6. Staging of Cancer - cNX, cN2, or cN3 disease

 7. Breast Implants - Breast implants at time of diagnosis. Note: Patients who have had
 implants previously removed prior to diagnosis are eligible.

 8. Systemic Illnesses or Concurrent Disease - Co-morbid systemic illnesses or other
 severe concurrent disease which, in the judgment of the investigator, would interfere
 significantly with whole breast irradiation (such as connective tissue disorders,
 lupus, scleroderma).

 9. Uncontrolled Intercurrent Illness - Uncontrolled intercurrent illness including, but
 not limited to, ongoing or active infection, symptomatic congestive heart failure,
 unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations
 that would limit compliance with study requirements.

 10. Bilateral Breast Cancer - Prior or current LCIS, DCIS or invasive breast cancer in the
 opposite breast (i.e., bilateral disease is not allowed).

 11. Disallowed Prior Treatments - Treatment including radiation therapy, chemotherapy,
 biotherapy, hormonal therapy for this cancer prior to surgery (i.e., any neoadjuvant
 chemotherapy or endocrine therapy is not allowed). Patients who undergo surgical
 resection with breast conservation and then are treated with adjuvant systemic therapy
 are eligible to enroll prior to the start of radiotherapy.

 12. Partial Breast Radiation - Planned partial breast radiation.

 13. Known BRCA Mutations - Patients with known BRCA mutations. Patients who are not tested
 or whose testing result is not returned at the time of registration are not excluded
 from registering to this study.

 14. Other Active Malignancies - Other active malignancy ≤ 5 years prior to registration.

 14.1 Exceptions: Non-melanotic skin cancer or carcinoma-in-situ of the cervix.

 14.2 Note: If there is a history of prior malignancy, they must not be receiving other
 specific treatment for their cancer.