Hi there, my mum went into hospital with chest infection and slight fluid on the lungs. She has been 9years clear of breast cancer after having a mastectomy and her lymph nodes removed. Last year she had fluid on the lungs. She also had tumor markers sent that showed elevated Ca 15 3. But nothing has shown up on the ct scan.
My question is what does elevated Ca 15 3 mean? Any help would be very appreciated. Thank you