6 centimeters across

How likely is it that a hard mass that spans just about 2 1/2 inches is benign? It feelsl very very hard and I am quite concerned. Going in to a specialist on Wednesday. This mass does not show up on mammogram or ultrasound as I have dense breasts. Should I get a biopsy even though it isn't showing up? How can I be sure they get the right tissue? With a mass this size do I want an incisional or excisional biospy? I just want to be prepared. Also my lymph ducts seem enlarged on the same side. Should I request a biopsy of the lymph ducts or is that something they investigate later?

[Cleveland Clinic]

Dear gingermoore, Decisions about need for further investigation such as biopsy are based on degree of suspicion of a mass.  This degree of suspicion is determined based on the findings of history and physical examination, findings of the tests etc.  It is impossible for us to make specific recommendations over the internet as to whether a biopsy is needed in your situation, and if so what type of biopsy makes the most sense.  These are questions best asked of the specialist who with all of the information available will be able to discuss in context of your individual situation.

[cldubsokind]

     Talk with your doctor. I have a very similar case as you and because of me being so young,32, with this huge hard mass even my OB/GYN told me when she ordered up the mammo that I may need a biopsy. Doctors seem to know what they are looking for in a breast cancer screening. If the doctor suggests you do the wait and see aproach and can give you good reason to wait and can convince you that you should and your comfortable with that then wait. If he asks you to wait and you are not comfortable waiting go get a second opinion if the doctor will not request a biopsy for you. If two doctors have the same thought on this then maybe this is just like the other thousands of cases they see ever year that are benign and they do not feel the need to make you worry when they are sure it is one of the many benign breat issues there are.
     I would think that the lymph node swelling might put up a red flag along with the mass though.
    They say 80% of all masses are benign. I unfortunately am in the other 20% , but I had a hige mass as well as microcalcifications on mammo that is why my biopsy was ordered, because of the microcalcifications rather then the mass. So push for an answer that your comfotable with.