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Triple positive, went through TCHP, had a lumpectomy to remove 2.7cm IDC. Margins weren’t clear, so went through revision lumpectomy to remove 35mm DCIS. During the revision surgery, they found more residual IDC that apparently responded piecemeal to chemo. Now, primary surgeon recommends mastectomy and a second surgeon said margins are clear and doesn’t recommend more surgery. Please share your experiences and opinions on whether I should undergo the mastectomy or go through radiation to… read more

December 14, 2025
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A MyBCTeam Member

Since you have gotten two different opinions, check with your insurance- often when this is the case, they will cover a third opinion. Piece of mind is priceless! Keeping you in prayers!

December 14, 2025
A MyBCTeam Member

I’m sorry you’ve had such a nightmare of a time. I would give your body a break in 2026, too. You deserve it.

December 15, 2025
A MyBCTeam Member

Hi Beth....HER2 positive cancer is more aggressive. My mom was triple positive. I was fortunate to be hormone positive and HER2 negative. Since my mom and great grandmother both had breast cancer I decided to go aggressive and have a double mastectomy since I didn't want to risk it showing up in my other breast. A lumpectomy was not an option for me because there were tumors in 3 out of 4 quadrants on the breast with cancer. Since you didn't have clear margins, you are HER2 positive and they found more cancer that chemo didn't kill for peace of mind you may want to opt for the double mastectomy. If it will ease your mind you should seek out a 3rd opinion as well.

Regarding reconstruction, I have had 12 reconstruction surgeries. I had expander implants installed with the double mastectomy. My doctor was an idiot and butchered me. After 4 surgeries I ended up with an expander implant on the left side and a mangled looking pit on the right side, which was the one with cancer, that also included some detached muscles so I was unable to make certain movements with my right arm. After much research I opted to go with DIEP surgery. Only one side took and I had to get an expander implant which was eventually switched out to a gel implant and the muscles that were left detached were reattached, although there was quite a bit of atrophy and I lost a lot of range of motion.

Then my cancer came back after 7.5 years on the right side. They scraped out what remained of breast tissue, removed some muscle that the cancer was growing in, and removed 2 lymph nodes from the breast and 16 from my right armpit. Once again I am left with a reconstructed breast on the left side and a pit on the right side. My reconstruction options are slim now and would most likely involve a latimus dorsi flap surgery, but that takes a muscle from your back which is brought around to your front and used in the reconstruction. I don't really want to lose any more mobility as I've already lost well over 50% of my range of motion on both sides. I also worry that if the cancer comes back, which my oncologist says is a 30% risk if I take AIs for the rest of my life and CDK inhibitor for 3 years or 50% risk if I don't take the drugs, any reconstruction I would have done would be destroyed again.

If I could go back in time and do it all over again I would opt to go flat. I'm still healing now after spending the last year having 3 surgeries, chemo, and radiation. I'm giving my body a break in 2026 since I am wiped out, but I will assess things over the next year or two and will most likely opt to go flat in the long run. Good luck to you with whatever decision you make ❤️

December 14, 2025
MyBCTeam

What factors should be considered when deciding between mastectomy and radiation after unclear margins?

This is a challenging situation with two valid medical perspectives. Your primary surgeon may be recommending mastectomy because of the multiple areas of cancer found (the original IDC, then DCIS, then residual IDC) Show Full Answer

What factors should be considered when deciding between mastectomy and radiation after unclear margins?

This is a challenging situation with two valid medical perspectives. Your primary surgeon may be recommending mastectomy because of the multiple areas of cancer found (the original IDC, then DCIS, then residual IDC), which suggests the cancer was more widespread than initially thought. The concern is whether there might be additional cancer cells that imaging hasn't detected.

The second surgeon's view that margins are now clear focuses on what was actually removed and measured. After lumpectomy, radiation is standard treatment to eliminate any remaining cancer cells in the breast tissue.

Here are key factors that typically influence this decision:

* Whether cancer was found in multiple areas of the breast
* The size of tumors relative to your breast size
* Your ability to safely receive radiation therapy
* Whether you've had previous radiation to the same area
* Your personal comfort level with the risk of recurrence

Studies show that lumpectomy followed by radiation and mastectomy have similar survival rates for early-stage breast cancer. However, the risk of cancer returning in the same breast is lower with mastectomy (around 5%) compared to lumpectomy with radiation (around 10-15%). Given your specific situation with residual IDC found during revision surgery, you might consider:

* Getting a third opinion from a breast surgical oncologist
* Asking about additional imaging to assess if there are other areas of concern
* Discussing your long-term risk factors and personal preferences
* Understanding what follow-up monitoring would look like with each option

Many MyBCTeam members have faced similar decisions. Some chose mastectomy for peace of mind, while others opted for radiation after lumpectomy and did well. The "right" choice depends on your individual medical situation and what feels right for you.

This is truly a shared decision between you and your care team. Both options can be effective - it's about weighing the medical factors against your personal values and comfort level.

December 14, 2025

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