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A MyBCTeam Member asked a question 💭
New Caney, TX
November 4, 2025
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A MyBCTeam Member

I don't have TNBC, but I do get regular PET scans since I have breast and endometrial cancer and the cancers have returned 4 times now, 3 times with the endometrial and 1 time with the breast. I get PET scans every 3 months and have been since September 2021. Since then I haven't made it over a year without cancer returning somewhere which is why I get the scans so often. Don't be surprised if they want you to have scans every few months even after you finish your chemo. PET scans don't show active cancer if it's just a few cells or it's still really small. The AI answer for your question has accurate info. The PET scan can show if the chemo is working or not. Typically with the different chemos used for different types of cancer there will be a set amount of treatments they want you to get. If your 4 chemo treatments in on an 8 round chemo regimen there's an excellent chance that even though you've had a clear PET scan they will want to continue your chemo treatments to up the odds that all the cancer cells are killed off. Good luck to you ❤️

November 4, 2025
A MyBCTeam Member

Chemo regimen, duration is based on bio markers, lymph node involvement, Onco Type.

I am TNBC, stage Ib. I had chemo first, AC and Taxol, that was standard of care at the time. Now it also includes Carboplatin and Pembrolizumab (immunotherapy for TNBC) weekly times 12 and AC with Pembro times 4. Same for stage 1, 2, 3 or 4

November 4, 2025 (edited)
MyBCTeam

How long do you need chemo after a cancer-free PET scan with TNBC?

The duration of chemotherapy isn't typically determined by a single cancer-free PET scan. Instead, your treatment plan is usually decided at the beginning based on several factors:

* The stage of your cancer when diagnosed
* Whether chemo is given before Show Full Answer

How long do you need chemo after a cancer-free PET scan with TNBC?

The duration of chemotherapy isn't typically determined by a single cancer-free PET scan. Instead, your treatment plan is usually decided at the beginning based on several factors:

* The stage of your cancer when diagnosed
* Whether chemo is given before surgery (neoadjuvant) or after surgery (adjuvant)
* How your cancer responds to treatment

If you're receiving chemotherapy and a PET scan shows the treatment is working, your oncologist will likely continue with the planned course. A MyBCTeam member shared their experience: after three rounds of chemo, their PET scan showed the treatment wasn't working, so they switched to a different approach.

For metastatic breast cancer, PET scans are used more regularly to monitor treatment effectiveness. One member mentioned getting PET scans every three months to ensure their treatment continues working.

Your oncologist will use PET scans and other tests throughout treatment to measure effectiveness. If your current chemotherapy isn't working, you may be switched to different drugs. The key is ongoing monitoring and adjustment based on your individual response.

It's important to discuss your specific treatment timeline with your medical team, as they can best guide you based on your unique situation.

November 4, 2025

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Avon Lake, OH