Enhancing Breast Reconstruction with Bovine Pericardium: A Preliminary STEP (Surgical Techniques and Efficacy in Pericardium Use) Towards Improved Outcomes

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Abstract
Background/Objectives: In pre-pectoral breast reconstruction, both synthetic meshes (SM) and acellular dermis or pericardium matrixes (ADM/APM) present drawbacks that can be prevented with targeted device choosing. In daily practice, the authors wrap the implant with a human-derived ADM (hADM) when they found mastectomy flaps thinner than 1 cm. When hADM is not available, an APM is used. Here, the authors present their results with APM utilisation. Methods: From January to September 2024, patients undergoing pre-pectoral breast reconstruction with mastectomy flaps thinner than 1 cm were selected. Specifically, implants were wrapped in bovine pericardium (Exaflex—MAGGI Srl, TO, Italy). During a minimum 6 months follow-up, outcomes were recorded; in particular, rippling incidence was assessed with indication for secondary fat grafting. Results: Nineteen patients met the inclusion criteria. Average age was 54.4 years (range: 39–70), three of them were smokers (15.8%) and three were affected from diabetes or hypertension (15.8%). With one case bilateral, a total of 20 mastectomies were performed. Intra-operative mastectomy flaps’ thickness mean measure was 0.75 cm (range: 0.5–0.8). All of them underwent two-stage pre-pectoral IBR with APM covering the implant. During a mean follow-up of 9.5 months (range: 6–13), no major post-operative complications occurred and five cases (25%) presented rippling. Conclusions: With no consensus on the superiority of either biologic matrixes or SMs, the authors extended their patients’ selection tool to aid in the choice of peri-prosthetic device. The bovine APM use showed capacity of reducing secondary lipofilling interventions in patients with thin mastectomy flaps.

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