Thank you for this important question. Modern silicone implants are filled with a cohesive ("gummy bear") gel, so when the shell tears the gel tends to stay in place rather than spreading. This is why most silicone ruptures are "silent" — they often cause no symptoms at all, and many women have no idea anything has changed. When there are signs, they can include a change in breast shape or size, new firmness, lumps, a different feel to the breast, and sometimes discomfort. The encapsulation you mention — capsular contracture — is the scar tissue your body forms around any implant; when it tightens it can make the breast feel hard, look distorted, or become tender. Because silent ruptures are common, the FDA recommends periodic imaging — an MRI or high-resolution ultrasound — to check the integrity of silicone implants over time. An examination alone cannot reliably confirm or rule out a rupture. As for danger: a contained silicone rupture is generally not a medical emergency and does not cause the systemic illness people often fear, but a ruptured implant should be removed or exchanged, and a tight capsule may need to be released or removed at the same time. My advice is to have an examination together with an ultrasound or MRI so we can see exactly what is happening, and then decide whether implant exchange, removal, or capsule treatment is right for you. I would be happy to see you in consultation to evaluate this properly.