What is Scar Tissue Inside the Breast Suppose to Feel Like?

Unfortunately,  it is not possible to give you good advice regarding the “hardness” you are feeling in the breast  without direct examination. I think it would be in your best interests  to continue with close follow-up with your plastic surgeon ( as opposed to online consultants' speculation) who knows your situation best, and will be able to make a diagnosis and treatment plan for you.

Best wishes.

At three months post-op, you are not yet completely healed, but are well on the way. Some firmness can be due to scar formation within the breast tissue, and this generally softens over time (6-12 months). Occasionally, particularly in smokers, there can be ischemia (lack of circulation, significantly worsened by nicotine) causing fatty tissue to die (fat necrosis) which will also soften over time, but not always completely.

One other potential cause for the feeling of a "plum-sized" lump within the breast is a collection of blood or serum (hematoma or seroma) that may need to be drained. An ultrasound can easily determine this (so can a properly-directed needle!), but you need to see your surgeon to take either of these steps. This may actually be the most likely cause, since there is a residual pocket where your implants were, and a collection of fluid would not be unusual at all. Since you note this on one side only, it is not just a "normal" part of healing!

While not an emergency, I would not just "let this go." See your doctor and listen to his advice. Best wishes!

Scar tissue inside the breast can vary in texture and sensation depending on factors such as the type of surgery, individual healing process, and the characteristics of the scar tissue itself. Scar tissue typically forms as part of the body's natural healing response to injury or surgery, including procedures such as breast augmentation, breast reduction, breast lift, or mastectomy.
In general, scar tissue inside the breast may feel:
1. Firm or Dense: Scar tissue often feels firmer or denser than the surrounding breast tissue. This firmness may be more noticeable in the early stages of healing and gradually soften over time as the scar matures.
2. Lumpy or Bumpy: Scar tissue may appear lumpy or bumpy, especially if it forms irregularly or in thicker layers. These irregularities may be palpable during self-examination or clinical breast exams.
3. Tender or Sensitive: Scar tissue inside the breast may be tender or sensitive to touch, especially during the initial stages of healing. This tenderness may gradually diminish over time but can persist in some cases.
4. Adherent or Fixed: Scar tissue may adhere to surrounding structures or the implant capsule, resulting in a fixed or immobile feeling. This adherence may contribute to changes in breast shape or texture.
It's important to note that the sensation of scar tissue inside the breast can vary widely among individuals and may be influenced by factors such as the surgical technique used, the extent of tissue manipulation, and individual healing characteristics. Additionally, other factors such as the presence of implants or the development of capsular contracture (excessive scar tissue around implants) may affect the sensation and texture of scar tissue within the breast.
If you have concerns about scar tissue or notice any changes in the texture or appearance of your breasts, it's essential to discuss them with your plastic surgeon. They can evaluate the area, provide reassurance, and recommend appropriate management options if necessary. Regular breast self-exams and clinical breast exams can help monitor for any changes in the breast tissue and facilitate early detection of any potential issues.