Comparing Patient Reported Outcomes and Clinical Outcomes Based on Different Scar Placement in Patients Undergoing Standard Breast Conserving Surgery for Breast Cancer: The PROM-S Study.

Inclusion Criteria: * Female patients ≥18 years of age * Able to provide written informed consent * Invasive breast cancer or ductal carcinoma in situ (DCIS) suitable for sBCS (including multifocal cancers requiring x2 wires or magseeds) * Able to understand and complete the questionnaire Scar over the lesion defined as radial, transverse, vertical, oblique scar over the tumour lesion location in the breast Remote incisions defined as lateral perimeter/periareolar/infra-mammary fold/ benelli/hemi-batwing * No restrictions on tumour size (decision on suitability for sBCS will be based on clinical assessment) * Any axillary nodal staging status * Bilateral cancers allowed * Post neo-adjuvant chemotherapy (NACT) allowed Exclusion Criteria: * Male patients (BCS not proven as standard of care) or transgender * Patients undergoing oBCS (such as wise pattern, vertical scar mastopexy incision pattern or volume replacement chest wall perforator flap) * Patients undergoing mastectomy with or without immediate autologous or implant reconstruction * Patients requiring nipple excision (central wide local excision) * Patients undergoing wide local excision under local anaesthetic * Women not able or willing to give informed consent * Where close tumour proximity to skin or skin involvement necessitates skin excision over the tumour * Patients diagnosed with locoregional recurrence * Patients diagnosed with associated distant metastasis * Patients undergoing diagnostic excision surgery for atypical breast lesions or benign lesions * Patients diagnosed with phyllodes lesion * Patients who have had previous ipsilateral breast surgery (any type)