About this trial
This is a national multicenter, prospective, cohort study. The study aims to compare surgical safety (e.g., surgical complication rates), surgery-related indicators (e.g., operation time, number of operations, surgery-related costs, contralateral breast adjustment operation rates), aesthetic outcomes (e.g., BREAST-Q scores, Harris scores, SCAR-Q scores, Ueda scores and QLQ-BR45 scores), and divorce rate between patients undergoing delayed endoscopic direct-to-implant breast reconstruction via an axillary approach and those undergoing the two-stage expander-to-implant breast reconstruction following simple mastectomy.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Female patients aged 18-70 years (inclusive) who have undergone simple mastectomy for breast cancer;
At least 1 year after simple mastectomy or 6 months after completion of radiotherapy, with good local skin viability and skin laxity;
Voluntary provision of informed consent.
Disqualifiers
Local/regional recurrence or uncontrolled distant metastasis detected upon re-examination (clinical, imaging, or pathological evidence);
Pectoralis major muscle was resected during the initial surgery;
Preoperative severe comorbidities with poor general condition, rendering the patient unable to tolerate surgery;
Immunodeficiency;
Trial design
Parallel
Treatments tested in this trial
Delayed endoscopic direct-to-implant breast reconstruction
Procedure/SurgeryThis technique allows for breast reconstruction in a single operation. Taking dual-plane breast reconstruction as an example, preoperative marking lines are drawn to indicate the contour and inframammary fold of the reconstructed breast. A 4-5 cm axillary incision is placed one finger-breadth below the axillary apex. After making the skin incision, the plane between the pectoralis major and minor muscles is identified and dissected, extending approximately 2 cm below the previous mastectomy horizontal scar. The inner and lower parts of the pectoralis major muscle were then separated. Proceed to the subcutaneous layer and continue to dissociate the flap until it reaches the pre-designed folds and the breast boundary. The use of the TiLOOP® Bra depends on the thickness of the patient's flap. Finally, the prosthesis is placed behind the pectoralis major muscle for breast reconstruction.
Two-stage expander-to-implant breast reconstruction
Procedure/SurgeryThe two-stage expander-to-implant breast reconstruction involves initially placing a tissue expander to stretch the skin. Once the skin has sufficient capacity, a second surgery is performed to replace the expander with a breast implant. The expander can be gradually adjusted based on the patient's skin expansion progress, physical recovery, and aesthetic needs to achieve optimal reconstruction results.
Treatment groups
Trial outcomes
Primary outcomes
Surgical complication rates
Surgical complication rates, major complication rates and minor complication rates, including flap scald, NAC ischemia/necrosis, seroma, surgical area infection, bleeding, incision splitting, flap ischemia/necrosis.
Secondary outcomes
Operation time
The surgical time includes total anesthesia time, total operative time, and flap dissociation time.
Number of operations
The number of surgical procedures performed, representing the total count of operations conducted.
Contralateral breast adjustment operation rates
The rate of contralateral breast adjustment operations, defined as the proportion of patients who undergo additional surgical procedures to modify or adjust the contralateral (opposite) breast to achieve symmetry with the reconstructed breast.
Surgery-related costs
Surgery-related costs include total hospitalization expenses, surgical costs, postoperative dressing change costs, expander injection costs, etc.
Sponsors and contacts
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West China Hospital
Lead sponsor
West China Second University Hospital
Collaborator
Fourth People's Hospital of Sichuan Province
Collaborator
West China Fourth Hospital
Collaborator
The Second People's Hospital of Chengdu
Collaborator
Suzhou Municipal Hospital
Collaborator
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