The investigators therefore aim to determine whether the type of mastectomy (preventive in a high-risk patient or therapeutic in a patient with a history of cancer), as well as the timing (immediate or delayed) and type of breast reconstruction, influence the quality of life and satisfaction of patients who have undergone bilateral mastectomy. The goal of this observational study is thus to measure and compare the quality of life of patients who have undergone bilateral mastectomy using the BREAST-Q questionnaire.

Inclusion Criteria:

• Female sex
• Age ≥ 18 years
• Bilateral mastectomy
• Breast reconstruction between January 1, 2015, and January 1, 2026
• No objection to the study

Exclusion Criteria:

• Individual under guardianship or curatorship, or deprived of liberty
• Reconstruction not completed by January 1, 2026.

Patients treated at CHU Grenoble Alpes for bilateral breast reconstruction between January 1, 2015, and January 1, 2026, in the plastic surgery and gynecology departments (departments performing breast reconstruction procedures).