The Hybrid Latissimus Dorsi Flap in Immediate Breast Reconstruction: A Comparative Study With the Abdominal-Based Flap.

[PURPOSE] The implant-enhanced latissimus dorsi (LD) flap, or a hybrid LD flap, is widely used in certain indications, even though abdominal-based flaps are now considered the gold standard of autologous breast reconstruction. However, few articles distinguish the hybrid LD flap from traditional LD flaps, and not many articles have compared the surgical outcomes, with the abdominal-based flap procedure, especially in the area of immediate breast reconstruction. In addition, it is often overlooked that the reported esthetic comparisons are based on different populations and contralateral balancing procedures (CBPs). Thus, this study aimed to review the reconstruction outcomes and to compare the variable-matched esthetic outcomes between 2 groups.

[METHODS] A retrospective review of patients who underwent immediate breast reconstruction with either a hybrid LD flap or an abdominal-based free flap and had completed at least 2 years of follow-up visits was carried out. The patient demographics, oncologic data, breast parameters, and postoperative outcomes were compared across the entire patient group. The body mass index (BMI)- and CBP-matched cohort was randomly selected and assessed using the Aesthetic Outcome parameter of the Aesthetic Item Scale.

[RESULT] Thirty-eight hybrid LD flap and 51 abdominal-based free flap procedures were included. The hybrid LD group showed a shorter operation time (330 ± 260 minutes vs 550 ± 480 minutes, respectively; P < 0.01), and fewer patients in the hybrid LD group underwent additional revision surgeries (7 [18.4%] vs 20 [39.2%], respectively; P < 0.01). Other complication rates were not significantly different between groups. A BMI- and CBP-matched esthetic analysis revealed that the hybrid LD group showed superior results in symmetry (Mann-Whitney U test, P = 0.047).

[CONCLUSIONS] The LD flap in combination with an implant remains a viable option in immediate breast reconstruction and had a similar complication profile while having a shorter operative time compared with the abdominal-based autologous breast reconstruction procedure. If properly used in certain populations, hybrid LD flaps may offer superior results regarding symmetry over the abdominal-based flap procedure.