Patient Reported Outcomes After Oncoplastic Breast Conserving Surgery

Study Overview
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Brief Summary
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The goal of this study is to assess patient satisfaction after oncoplastic breast conserving surgery. With the help of a breast-questionnaire the patient satisfaction will be assessed before the surgery and 4 weeks, 6 months and 1 year after the operation. The main question it aims to answer are: Does breast conserving surgery improve quality of life. type of study: cohort study, observational OCBS = oncoplastic breast conserving surgery BCT = breast conserving therapy DCIS = ductal carcinoma in situ participant population/health conditions Patients with newly diagnosed breast cancer, that can be treated breast conserving the participants have to be at least 18 years old Participants will fill out a questionnaire pre surgery, 4 weeks, 6 months and 1 year after the surgery. The individual questionnaires will be compared.

Detailed Description
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The management of breast cancer has undergone a significant shift over the last century. The advances in systemic therapy have not only improved the overall prognosis however also allowed for less radical surgery and more breast conservable efforts. The term oncoplastic breast conserving surgery was first coined in the early 90s where breast cancer surgery was performed while incorporating plastic surgical techniques. Therefore, this enabled the preservation of the natural breast shape with good aesthetic outcomes. Over the years oncoplastic breast conserving surgery has become widely accepted and adopted into routine clinical practice by most breast cancer surgeons. The oncological safety surrounding oncoplastic breast conserving surgery have been well established. Rates of positive surgical margins and re-excision rates have been shown to be similar to traditional lumpectomy operations. Complication rates are also comparable and oncoplastic breast conserving surgery does not result in delays in adjuvant treatments. However, many surgeons would concur that the most significant benefit of oncoplastic breast conserving surgery (OBCS) is patient satisfaction and the potential improvement in their quality of life. Patient reported outcomes (PROMs) allow us to objectively assess patient satisfaction and the impact the intervention has had onto their lives. Incorporating PROMs into daily clinical practice would not only facilitate shared-decision making but also allow us to tailor clinical management to suit individual patient needs. This study however also aims to assess the patient reported outcome after breast surgery and in the follow up time (after radiotherapy, ...).

Official Title
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Patient Reported Outcomes After Oncoplastic Breast Conserving Surgery

Conditions
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Breast Cancer Stage I, Breast Cancer Stage II, Breast Cancer in Situ

Intervention / Treatment
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* Procedure: Breast-conserving surgery


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: BCT oncoplastic surgery technique Women > 18 years Exclusion Criteria: Previously treated ipsilateral breast cancer or DCIS Severe psychological illness by doctors' discretion (as taking part in a study could increase anxiety) or severe dementia, that stops them to consent to the procedure Pregnant women Distant metastatic disease (M1)

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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Female

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Intervention/Treatment |
| --- |
|Procedure: Breast-conserving surgery|Following oncoplastic surgeries are performed at the Brust-Zentrum in Zurich: Oncoplastic reconstruction with round-block technique Oncoplastic reconstruction using J-Plastic Oncoplastic reconstruction using V-Plastic Oncoplastic reconstruction using Grisotti Oncoplastic reconstruction using Batwing Oncoplastic reconstruction using Mammareductionplasty (Wise Pattern, Vertical) Oncoplastic perforator flap surgery|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change of patient satisfaction with their breasts pre- and post breast-conserving surgery | To assess patient satisfaction using BREAST-Q over the duration of the breast cancer clinical management and follow up i.e., pre-, and postoperative: 4 weeks, 6 months and 1 year after the surgery. | before the surgery and 4 weeks after the surgery | 
| Change of quality of Life pre- and post breast-conserving surgery | To assess Quality of Life using BREAST-Q over the duration of the breast cancer clinical management and follow up i.e., pre-, and postoperative: 4 weeks, 6 months and 1 year after the surgery. | before the surgery and 4 weeks after the surgery | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| impact of age (>70 and < 60 years old) on Patient reported outcome measures | To assess the impact of age (> 70 and < 60 years old) on patient reported outcome measures (validated questionnaire) after oncoplastic surgery, If age has an impact on patient satisfaction with their breasts pre and post surgery | baseline and 4 weeks postoperative |