Which term describes rupture inside the capsule as listed in the material?

• A. Linguini sign - MRI
• B. Step ladder sign - US
• C. Intra-capsular implant rupture
• D. Intracapsular implant rupture

Answer: (A)

Rupture inside the capsule means an intracapsular rupture, where the implant shell is breached but the fibrous capsule around the implant remains intact. On MRI, this is classically shown by the linguine sign: undulating, wavy lines inside the implant lumen that represent folded, collapsed shell material within the silicone gel. This pattern is highly specific for intracapsular rupture because it demonstrates shell rupture while the capsule still contains the silicone, distinguishing it from extracapsular rupture where silicone escapes beyond the capsule. While ultrasound has a corresponding sign described as the step-ladder sign for intracapsular rupture, the linguine sign on MRI is the definitive, widely recognized descriptor for rupture contained within the capsule.