• New lump after chemo/rad...mammo says it is benign but ultra sound can't confirm. Biopsy scheduled. Wonder why u/s can't confirm?

    Asked by sjjohnson1 on Saturday, December 1, 2012

    New lump after chemo/rad...mammo says it is benign but ultra sound can't confirm. Biopsy scheduled. Wonder why u/s can't confirm?

    6 Answers from the Community

    6 answers
    • Harry's Avatar

      Different tests give different results. They aren't measuring the same thing. A biopsy is how you make sure.

      almost 4 years ago
    • nancyjac's Avatar

      An ultrasound can detect a tumor or cyst or other bodies of tissue or fluid. It cannot determine if they are benign or malignant.

      almost 4 years ago
    • Peroll's Avatar

      Both a mamogram and ultrasound only show differences in tissue density. Cancer tumors are more dense than breast tissue so they show up in mamograms and ultrasounds. Neither test will prove that your lumps are or are not cancer. The only way to tell for sure is a biopsy. If I was you I would hope that the biopsy show it is bengin. Good luck and let us know how things work out.

      almost 4 years ago
    • JennyMiller's Avatar

      The good news is that the lump showed -- so that you can proceed with the biopsy to determine if it is benign or malignant. My 4.9 tumor did not show on mammo or ultra sound. My lymph node under arm seemed a little "generous" to them so they decided to biopsy it -- breast cancer cells were found -- so began the search for the elusive tumor with MRI -- then the biopsies to confirm Stage III Pleomorphic Invasive Lobular Carcinoma. Thus -- the biopsy tells the story!!!!!!

      almost 4 years ago
    • karen1956's Avatar

      Ultra sound can't tell if its cancer or not...just tells that something is there (same with MRI)

      almost 4 years ago
    • JudyS's Avatar

      I had a mammo with a suspicous spot and was called back for an ultrasound with core needle biopsy before they could diagnose the tumor as cancerous. I have not heard of even a digital mammogram being able to diagnose if a spot is benign or not. I then had a MRI before surgery. When the surgery was performed, they discovered I had 2 completely different tumors, only 1 type was picked up by the biopsy. A smaller tumor was right behind the larger one and it was a completely different type of breast cancer. JennyMiller is right - very blessed that the tumors showed on the mammogram to begin with. Best wishes!!

      almost 4 years ago

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