An increasing number of women may be choosing mastectomy over breast-conserving surgery for breast cancer as well as undergoing more bilateral resection, immediate reconstruction, and prophylactic operations. Women who had breast cancer operations between 2005 and 2011 were selected from the National Surgical Quality Improvement Program database. Annual trends were explored using robust Poisson multivariable regression as were predictors for mastectomy versus breast-conserving surgery. A total of 85,401 women were identified. Mastectomy increased from 2005 to 2011, starting at 40 per cent in 2005 and peaking at 51 per cent in 2008 (P < 0.001). Bilateral resection, immediate reconstruction, and prophylactic mastectomy also increased (all P < 0.001). Independent predictors of mastectomy included young age, Asian race, invasive cancer (vs carcinoma in situ), bilateral resection, axillary dissection, higher American Society of Anesthesiologists class, and lower body mass index (all P < 0.001). There was an increase in mastectomy, bilateral resection, immediate reconstruction, and prophylactic mastectomy from 2005 to 2011.
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