DeBruhl N D, Gorczyca D P, Ahn C Y, Shaw W W, Bassett L W
Iris Cantor Center for Breast Imaging, Department of Radiological Sciences, UCLA Medical Center 90024-6952.
Radiology. 1993 Oct;189(1):95-8. doi: 10.1148/radiology.189.1.8372224.
To determine the value of breast ultrasonography (US) in the assessment of silicone breast implants for rupture.
Seventy-four women with local or systemic symptoms related to silicone implants underwent breast US. Of these, 28 underwent surgical removal of the implants.
Of 57 implants removed, 37 were intact. The most reliable sign of an intact implant was an anechoic interior, although reverberation artifact and radical folds could be seen. Of 20 ruptured implants, 16 were intracapsular and four were extracapsular ruptures. The most reliable US sign of rupture was echogenic, horizontal ("stepladder") lines (14 of 20 ruptures). Two of the four extracapsular ruptures were accurately identified as echogenic nodules outside the implant; two were false-negative findings. Three intracapsular ruptures identified at US were false-positive; six were false-negative. Overall sensitivity for rupture was 70%, specificity was 92%, positive predictive value was 82%, and negative predictive value was 85%.
Breast US is capable of depicting intracapsular and extracapsular rupture of breast implants.
确定乳腺超声（US）在评估硅凝胶乳房植入物破裂方面的价值。
74例有与硅凝胶植入物相关的局部或全身症状的女性接受了乳腺超声检查。其中，28例接受了植入物的手术切除。
在切除的57个植入物中，37个完整。完整植入物最可靠的征象是内部无回声，尽管可见混响伪像和皱襞。在20个破裂的植入物中，16个为囊内破裂，4个为囊外破裂。最可靠的超声破裂征象是回声增强的水平（“阶梯状”）线（20个破裂中有14个）。4个囊外破裂中有2个被准确识别为植入物外的回声结节；2个为假阴性结果。超声检查发现的3个囊内破裂为假阳性；6个为假阴性。破裂的总体敏感性为70%，特异性为92%，阳性预测值为82%，阴性预测值为85%。
乳腺超声能够显示乳房植入物的囊内和囊外破裂。
