Faculdade de Ciências Médicas da Santa Casa de São Paulo (FCMSCSP), São Paulo, Brazil.
Femme Laboratório da Mulher, São Paulo/ Brazil.
Clin Imaging. 2022 Nov;91:26-31. doi: 10.1016/j.clinimag.2022.08.010. Epub 2022 Aug 16.
To propose a new classification system for evaluating fibrous capsules around silicone implants using magnetic resonance.
We retrospectively evaluated 90 consecutive patients who underwent breast MRI scans at a single center from February to March 2022. All patients with silicone implants and contrast dynamic sequences were included. Two radiologists classified the fibrous capsules according to the proposed classification in four grades. Interobserver variability was calculated for the final score. For comparison purposes, the inter-rater agreement of background parenchymal enhancement and the amount of fibroglandular tissue were also calculated.
Reader 1 classified 2 (2.2) fibrous capsules as grade 1, 7 (7.8) as grade 2, 18 (20.0) as grade 3, and 63 (70.0) as grade 4, whereas reader 2 classified 1 (1.1), 9 (10.0), 24 (26.7), and 56 (62.2) fibrous capsules, respectively, for each grade. The interobserver agreement for fibrous capsule classification was moderate (ĸ = 0.65). The inter-rater agreement of background parenchymal enhancement and amount of fibroglandular tissue were fair: ĸ = 0.50 and ĸ = 0.44, respectively.
Our study proposes classifying FC by MRI in patients with SI to standardize the description and classification of the findings with good interobserver agreement.
提出一种新的磁共振成像评估硅酮植入物周围纤维囊的分类系统。
我们回顾性评估了 2022 年 2 月至 3 月在一家中心接受乳房 MRI 扫描的 90 例连续患者。所有患者均为硅酮植入物和对比动态序列。两位放射科医生根据提出的分类方案将纤维囊分为四个等级。计算最终评分的观察者间变异性。为了比较目的，还计算了背景实质强化和纤维腺体组织量的组内相关系数。
读者 1 将 2（2.2）个纤维囊分为 1 级，7（7.8）个为 2 级，18（20.0）个为 3 级，63（70.0）个为 4 级，而读者 2 将 1（1.1）个、9（10.0）个、24（26.7）个和 56（62.2）个纤维囊分别分为每个等级。纤维囊分类的观察者间一致性为中度（ĸ=0.65）。背景实质强化和纤维腺体组织量的组内相关系数为公平：ĸ=0.50 和 ĸ=0.44。
我们的研究提出了一种通过 MRI 对 SI 患者的 FC 进行分类的方法，以标准化发现的描述和分类，具有良好的观察者间一致性。
