Breast MRI of silicone implant

Breast MRI is useful for the assessment of silicone implant integrity.

(A) Axial image of an intact subglandular silicone implant with radial folds (normal infolding of the implant envelope). Arrows point to radial folds.

(B) Axial image of a subglandular silicone implant shows curvilinear low signal within the silicone corresponding to a collapsed envelope, called the "linguine sign" (arrow), consistent with an intracapsular rupture.

(C) Axial image shows rupture of the envelope and capsule with extrusion of silicone into the surrounding breast tissue consistent with an extracapsular rupture. Arrow points to silicone within an intramammary lymph node.