Medot M, Landis G H, McGregor C E, Gutowski K A, Foshager M C, Griffiths H J, Cunningham B L
Department of Surgery, University of Minnesota Medical School, Minneapolis, USA.
Ann Plast Surg. 1997 Oct;39(4):337-41. doi: 10.1097/00000637-199710000-00002.
Unlike computed tomography and magnetic resonance imaging, ultrasound is an inexpensive test of potential use in detecting silicone gel breast implant (SBI) rupture. However, periprosthetic capsular contracture can make ultrasonic diagnosis of rupture difficult because the contracture-related radial folds inside the SBI can lead to a false-positive diagnosis of rupture. This study was conducted to determine the effects of capsular contracture on the ability of ultrasound to diagnose SBI rupture. Preoperative ultrasonic results of 122 SBIs were compared with surgical findings at the time of implant removal. The sensitivity and negative predictive values of ultrasound were lower in the presence of a contracted capsule (41.2% vs. 68.7%, p = 0.062; and 58.3% vs. 79.6%, p = 0.056 respectively). Ultrasound should be considered reliable in diagnosing SBI rupture only in the absence of a contracted capsule.
与计算机断层扫描和磁共振成像不同，超声是一种价格低廉的检测方法，可能用于检测硅胶乳房植入物（SBI）破裂。然而，假体周围包膜挛缩会使超声诊断破裂变得困难，因为SBI内部与挛缩相关的径向褶皱可能导致破裂的假阳性诊断。本研究旨在确定包膜挛缩对超声诊断SBI破裂能力的影响。将122个SBI的术前超声结果与植入物取出时的手术结果进行比较。在存在挛缩包膜的情况下，超声的敏感性和阴性预测值较低（分别为41.2%对68.7%，p = 0.062；58.3%对79.6%，p = 0.056）。只有在不存在挛缩包膜的情况下，超声在诊断SBI破裂方面才应被视为可靠。
