cannot confirm the diagnosis of breast cancer
.It only gives an idea of any swelling in the breast and whether it is Solid or Cystic .
So,a simple test called Fine Needle Aspiration Cytology (FNAC) of the swelling will confirm the diagnosis(OR)
As the swelling is small,you can get it completely removed and send it for biopsy
If you are young,chances of breast cancer are minimal.
Get an FNAC/Biopsy and confirm the diagnosis.
If you come back with FNAC/Biopsy report, i will clarify further
Wish you good health