Qualitative mammographic findings and outcomes of surveillance mammography after partial breast reconstruction with an autologous flap.

BACKGROUND: This study describes the qualitative mammographic features after partial breast reconstruction with an autologous flap, and evaluates the diagnostic accuracy and recall rates of surveillance mammography after volume replacement in breast conserving surgery.
METHODS: Patients who had autologous partial breast reconstruction (N = 102) after breast-conserving surgery using either the myocutaneous latissimus dorsi mini-flap (N = 39) or fasciocutaneous chest wall perforator flap (N = 63) were reviewed. Mammograms done at one-year post surgery were analysed for characteristic qualitative features. All surveillance mammograms, diagnostic imaging and medical records were retrospectively reviewed.
RESULTS: Mammograms of partially reconstructed breasts had distinctive features that correlated well with the surgical procedures. Median follow-up was 3 years, range 0-11 years. Of 295 surveillance mammograms, six (2%) resulted in a recall for further imaging and 3 (1%) proceeded to needle biopsy. Diagnostic imaging was performed for 13 (13/102, 12.7%) patients with symptoms, and only one (1/102, 1%) required a diagnostic biopsy.
CONCLUSIONS: A conserved breast with an autologous flap within has characteristic mammographic features that differ from those after standard breast conserving surgery. Surveillance mammography after partial breast reconstruction is accurate, and recall/biopsy rates are low. Diagnostic breast ultrasound examination is effective evaluation for the symptomatic patient.