Thanks for using Healthcaremagic,
I am sorry to know about your mother, she has Ca breast with metastasis. She is taking best possible treatment.
This is good sign that she is responding to treatment.
CA15-3 is a tumor marker
used to monitor certain cancers, especially breast cancer
CA27.29 has enhanced sensitivity and specificity it is different epitope on same protein.
CA27.29 is elevated in low-stage disease and 60 to 70% of patients with advanced-stage breast cancer.
These can be elevated in other diseases also hence clinical correlation is required; some examples are sarcoidosis
, Lupus, Cirrhosis
PET scan of whole body is very good test for locating bone metastasis
Hope this help you.
Take very good care of her.
Dr.Akhilesh Dubey M.D.