Hi all, I am posting on behalf of my sister. She was diagnosed with stage 3 TNBC in her right breast in 2023 and underwent chemo, radiation and mastectomy along with immunotherapy. Her immunotherapy landed her in the hospital but she was able to get PCR. The following year after her routine mammogram of the left breast, she was diagnosed with another tnbc and the doctors said that it is most likely a new primary and treated her as such. This is very rare; everyone, including MSK doctors, said they haven’t seen this case. She again underwent chemo, radiation and surgery. Yesterday, because of abdominal bloating and lower back pain, she went to the ER and got her scans, and they noticed nodules on the peritoneum lining that they diagnosed as peritoneum carcinomatosis. They ran all her other scans then and there per oncologist’s request, and this was the only cancer they see. The oncologist says that the peritoneum mets is rare and they will have to confirm with a biopsy if this is breast cancer or a primary. But does anyone here have mets to peritoneum and can provide insight on treatment? The internet has bleak stories about peritoneum cancer and at this point she and I both don’t know what to expect. Thanking in advance
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I’m sorry you’ve not had a response yet, you could ring the number on here and speak to a nurse​:heart: they will speak to you and be able to answer any questions for you 
Shi xx