The effect of previous scar on breast reconstruction using abdominal flap: a retrospective analysis of 122 consecutive cases and a strategy to reduce complication rates.

[BACKGROUND] Free abdominal tissue transfer is considered the gold standard for autologous breast reconstruction. However, many plastic surgeons are concerned about the theoretical risk of flap-related or donor-site complications associated with previous abdominal surgery. Also, studies have reported conflicting results in the literature due to difference in surgical strategies used in each study. This study analyzes the effect of prior incision on the complications and risk factors in our institution.

[METHODS] In this retrospective cohort study, we analyzed a total of 122 patients who had undergone reconstructive surgery between March 2012 and February 2019. To assess the effect of prior incision, we divided all patients into a scar group (n=59) and a control group (n=63). Based on our operative approach, patient demographics and postoperative complications were analyzed.

[RESULTS] No significant differences were found between patients in the scar group and the control group in flap-related (13.3% 16.4%, P=0.62) and donor-site complications (31.7% 31.4%, P=0.67). In binary logistic regression modeling, only diabetes mellitus was significantly related with donor-site complications (P=0.030).

[CONCLUSIONS] This result suggested that previous abdominal scars are no longer a reluctant factor for breast reconstruction using an abdominal flap, when an appropriate flap design was used and the surgical techniques were tailored to each scar. In patients with vertical midline or subcostal scar, it requires careful preoperative planning with CT angiography and attentive follow-up are needed.