MIBREAST Making in Immediate Breast REconstruction And the Measurement of the EffectS of RadioTherapy

Approximately 40% of all women diagnosed with breast cancer (BC) will require a mastectomy and a large proportion (60%) of these will choose to have an immediate breast reconstruction (IBR).

Patient satisfaction with physical appearance after completion of their BC treatment has a well-documented association not only with their psychological wellbeing but also improved quality of life. Due to advances in oncological therapies, BC patients now have excellent survival rates of 85% at five years and 75% at ten years meaning that more women survive to experience the long-term impact of surgical and radiotherapy treatments and highlights the importance of improving aesthetic outcome as a survivorship focus.

3D-surface imaging (3D-SI) and simulation is frequently used to demonstrate cosmetic breast augmentation outcomes in the private sector and is increasingly being used in breast cancer surgery.

Effective communication of the post-operative aesthetic outcome and the possible requirement of adjustment surgery to patients is a central part of the informed consent process. Women sometimes struggle to decide between breast-conserving treatment and mastectomy with or without reconstruction. Those that want reconstruction to have the option of using a silicone implant, or their own tissue, transplanted from the abdomen or inner thigh (an autologous flap). Consultations focus on the patient's desires and expectations, and the surgeon's explanation of what is technically possible, the benefits and compromises, until a mutual understanding is reached. This can however be challenging, particularly when attempting to predict the effects of adjuvant radiotherapy on the reconstructed breast. Traditionally, surgeons have used diagrams or 2D clinical photographs of other patients who have had surgery to demonstrate the predicted post-operative appearance. Many patients have reported that they find these methods unhelpful and confusing, as the wide variety of body habitus, breast shape, skin tone and surgical options mean that it is unlikely that a woman will see images adequately illustrating her own unique outcome.

The hypothesise that viewing 3D simulations of their own likely appearance after mastectomy and breast reconstruction will give women more confidence and certainty as they approach surgery. There are not yet in a position to use 3D-SI as a decision-support tool.

The overarching aim of this study is to evaluate the utility of 3D-SI in simulation and measurement of outcome of immediate breast reconstruction.

Hypothesis 1 - Impact of 3D Simulation on Shared Decision Making Women who see a simulation of their IBR outcome will have more confidence in their decision-making about IBR options.

Hypothesis 2 - Impact of 3D-SI on Elective Surgical Revision rate A better understanding of breast shape may reduce the need for elective surgical revisions such as volume-adjustment procedures (lipofilling or liposuction) in the reconstructed breast.

Hypothesis 3 - Impact of Radiotherapy on IBR The hypothesise that immediate breast reconstructions that receive radiotherapy undergo greater change in shape and position over time.

Inclusion criteria

• Female
• Aged > 18
• Undergoing immediate breast reconstruction (autologous or implant based) follow mastectomy for breast cancer or as a risk-reducing strategy
• Available to attend 3D-SI appointments at specified intervals

Exclusion criteria

• Lack of capacity
• Language barrier that prevents patients from understanding the English questionnaires
• Visual impairment
• Unable to answer study questionnaires
• Disability that may prevent appropriate positioning during the imaging process
• Unable to attend for photography
• Requiring delayed reconstruction or no longer considering a reconstruction