This is a retrospective, observational study - collecting data on patients who have gone through the staged procedure with the Motiva Flora Tissue Expander / Long-term breast implant.

Cumulative incidence and causal relationship with the device of adverse events (AEs) reported by the surgeon. This includes known complications as listed in the IFU, as well as any other adverse events, seen as at least possibly related to the device according to the surgeon.

Device-related complications include those resulting from any device failure, including those resulting in removal and/or replacement of the Motiva Flora® TE.

Successful tissue expander-based-breast reconstruction is measured by the fact that the second step of the staged procedure - the implantation of the long-term breast implant - could be performed or not as initially planned, as per surgeon judgement (Yes / No)

Surgeon's overall satisfaction with the results of the expansion according to the General Aesthetic Improvement Scale (GAIS), a 5-point Likert scale (1=very significant improvement, 2=significant improvement, 3=improvement, 4=no change and 5=decline) after the completion of the breast reconstruction (after the second surgery (long-term breast implant).

Length of hospitalization is measured in number of days that the patient stays in hospital after surgery, starting from the day after surgery.