Hi,
To decide on whether to biopsy a nodule (hyperechoic / hypoechoic), or observe it, radiologists take in other factors, such as size, location, shape and the nature of the edges. If you were not scheduled for a biopsy they presumably feel you can safely wait.
But you are certainly entitled to ask for a biopsy,or seek a second opinion if you are not comfortable waiting and worry for 6 months.
Best wishes and good luck...
I recently had my first ever mammo, and had to go back for the compression views and u/s. I have a 5mm lymph node that they want me to have checked in 3 months. I am a little leary about this. From what I researched, the normal size lymph node is a few mm to 1 - 2 cm. 5 mm is equal to .5 cm. I thought this was a normal size. Of course you cant get anyone to return your call to ask questions. I dont know what my BIRAD score was. All of this is new to me. Its scary.