Study to Compare the Safety of Immediate One-stage IBBR With Expander-Implant Two-stage IBBR Augmented With TiLoop® Bra(COSTA)

Inclusion Criteria:

* Patients with histological proven invasive breast cancer or ductal carcinoma in situ;
* Clinical T1-T2 disease with no distant metastasis;
* Patient with clinical N0 status;
* Intent to receive NSM or SSM and implant based breast reconstruction;
* Signed consent to participate.

Exclusion Criteria:

* Patient with severe breast ptosis;
* Patient received ipsilateral breast reduction or enlargement;
* Locally advanced stage patients who received neoadjuvant chemotherapy or hormone therapy;
* Patients enrolled in other clinical trial which may as influence the outcome;
* Patients received neo-adjuvant therapy and will receive radiotherapy.
* History of breast cancer (ipsilateral, i.e. recurrence, or contralateral breast);
* Patients of pregnancy or lactation.