I had a mammogram last month (I started getting them in 2001 due to an aunt having breast cancer); the results were as follows:

"The breasts are extremely dense which decreases the sensitivity of mammography. Asymmetry within the mid-right breast at the posterior nipple line does not persist on the exaggerated CC or MLO
view and does not have a correlate on the tomogram. this most likely represents summation of breast parenchyma. There is mass within the superior right breast on MLO which is unchanged since 2011 and may represent a benign lymph node. No suspicious masses, architectural distortion, or microcalcifications are identified."

They have never discussed the presence of the mass with me before, though they don't seem to think it is significant. I'm not so much concerned about that as I am with the density and their ability to detect any cancer early. Are there other tests they can do periodically to ensure that they detect any changes early enough?