Survival of BCS vs Mx in Asymptomatic Screen-detected NPBC

Study Overview
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Brief Summary
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We performed this study on a consecutive cohort of women with asymptomatic screen-detected NPBC. The clinicopathological characteristics, 10-year relapse-free survival (RFS) and overall survival (OS) were compared between BCS and Mx patients among different subgroups.

Official Title
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Long-term Survival of Breast-conserving Surgery Versus Mastectomy in Asymptomatic Screen-detected Unilateral and Bilateral, Unifocal and Multifocal, Young and Elderly Non-palpable Breast Cancer Among Chinese Women

Conditions
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Breast Cancer

Intervention / Treatment
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* Procedure: Breast Conserving Surgery
* Procedure: Mastectomy


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Written informed consent must be obtained and documented according to the local regulatory requirements prior to beginning specific protocol procedures. Age of at least 18 and at most 90 years. Performance status (Karnofsky-Index) >80%. Chemotherapy is necessary before or after surgery. No clinical evidence of local recurrence or distant metastases. Complete staging work-up within 3 months prior to registration. All patients must have (bilateral) mammography or breast MRI, chest X-ray; other tests may be performed as clinically indicated. Life expectancy of at least 2 years, disregarding the diagnosis of cancer. Adequate organ function including normal red and white blood count, platelets, serum creatinine, bilirubin, and transaminases within normal range of the institution. Patients must be available for and compliant to treatment and follow-up. Patients registered on this trial must be treated and followed up at the participating center. Exclusion Criteria: Known hypersensitivity reaction to the investigational compounds or incorporated substances. Local recurrence and/or metastasis of breast cancer. No need of chemotherapy. Pregnant or lactating patients. Patients of childbearing potential must have a negative pregnancy test (urine or serum) within 14 days prior to registration. Prior or concomitant secondary malignancy (except non-melanomatous skin cancer or carcinoma in situ of the uterine cervix) Any other serious medical pathology, such as congestive heart failure; unstable angina; history of myocardial infarction during the previous year; uncontrolled high risk arrhythmias Other serious illness or medical condition that may interfere with the understanding and giving of informed consent and the conduct of the study. Concurrent treatment with other experimental drugs or any other anti-cancer therapy. Males.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 90 Years

Sexes Eligible for Study
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Female

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| a consecutive cohort of women with asymptomatic screen-detected non-palpable breast cancer<br>a consecutive cohort of women with asymptomatic screen-detected non-palpable breast cancer treated in Dept. Breast Surgery, PUMC Hospital from January 2003 to December 2017 | Procedure: Breast Conserving Surgery<br>* Patients undergoing breast conserving surgery<br>Procedure: Mastectomy<br>* Patients undergoing mastectomy<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| The clinicopathological characteristics were compared between BCS and Mx patients |  | 15 years | 
| The prognosis was compared between BCS and Mx patients |  | 15 years |