TGF-ß1 and CD68 immunoexpression in capsules formed by textured implants with and without mesh coverage: a study on female rats

Purpose: To evaluate fibrosis formation and number of macrophages in capsules formed around textured implants without and with mesh coverage. Methods: Fibrosis was analyzed through transforming growth factor-beta 1 (TGF-ß1) immunomarker expression and the number of macrophages through CD68 percentage of cells in magnified field. Sixty female Wistar rats were distributed into two groups of 30 rats (unmeshed and meshed). Each group was then subdivided into two subgroups for postoperative evaluation after 30 and 90 days. The p value was adjusted by Bonferroni lower than 0.012. Results: No difference was observed in fibrosis between meshed and unmeshed groups (30 days p = 0.436; 90 days p = 0.079) and from 30 to 90 days in the unmeshed group (p = 0.426). The meshed group showed higher fibrosis on the 90th day (p = 0.001). The number of macrophages was similar between groups without and with mesh coverage (30 days p = 0.218; 90 days p = 0.044), and similar between subgroups 30 and 90 days (unmeshed p = 0.085; meshed p = 0.059). Conclusions: In the meshed group, fibrosis formation was higher at 90 days and the mesh-covered implants produced capsules similar to microtextured ones when analyzing macrophages. Due to these characteristics, mesh coating did not seem to significantly affect the local fibrosis formation.

Indicações e limites da mamoplastia com "cicatriz em L": experiência de 30 anos / Indications and limits of mammoplasty with "L-scar": 30 years' experience

Introdução: O autor preconiza redução da dimensão das cicatrizes nas mamoplastias às menores possíveis, utilizando cicatrizes em L como uma das táticas. Estabelece limites no seu uso, baseando as ressecções dos excedentes de pele na medida da ptose mamária. O objetivo é determinar os limites da mamoplastia em L. Métodos: Descreve a implantação das mamas no tórax, as linhas mamárias guias para qualquer mamoplastia, as mamas anatomicamente perfeitas e bonitas. Classifica o que denomina de "patologias estéticas" das mesmas, a maneira de quantificar a ptose em centímetros e escolhe a tática cirúrgica do L baseado nela, e suas limitações. Como reduzir e modelar as mamas hipertróficas e ptóticas conforme a classificação proposta. As manobras de suturar as incisões em "ponto e vírgula" partindo da lateral do sulco submamário para medial, depois para cima em direção ao ponto A, terminando em sutura vertical, V-Y ou "bolsa areolar de compensação circular", conforme o excedente de pele na região periareolar. Manobra que reduz a extensão da cicatriz horizontal, ao máximo de AM mais 2 cm. Resultados: Quando a medida da ptose mamária foi menor que 7 cm, os resultados foram de boa qualidade, sem ptose residual importante, sem distorções da aréola e do cone obtido. Conclusão: A mamoplastia com cicatriz em L é boa tática, mas deve limitar-se a casos com flacidez de medida AM abaixo de 7 cm e pele de boa qualidade.

Introduction: Studies recommend reducing the size of the scar on mammoplasties to the smallest possible, using L-scars as one of the techniques. However, its use is limited based on the resections of excess skin because of mammary ptosis. The objective of this study is to determine the limitations of L-mammoplasty. Methods: To describe the process of breast implantation, mammary lines are used to guide the mammoplasty to achieve anatomically perfect and beautiful breasts. This classifies as "aesthetic pathologies" with quantification of ptosis in centimeters and the limitations being considered in choosing the surgical technique. The proposed classification was used to reduce and model the hypertrophic and ptotic breasts. The suturing maneuvers involved a "semicolon" incision from the lateral side of the submammary groove to the medial and then upward toward point A, terminating in vertical suture, VY, or "areolar circular compensation bag," depending on the excess skin in the periareolar region. This maneuver reduces the extension of the horizontal scar to the maximum of AM plus 2 cm. Results: When mammary ptosis was less than 7 cm, the results were of good quality, without significant residual ptosis and distortion of the areola, achieving a cone shape. Conclusion: L-mammoplasty is a good technique, but it should be limited to cases with AM flaccidness below 7 cm and good skin quality.