Chapter 6 PALPABLE BREAST MASS
Approximately 190,000 new cases of breast cancer are diagnosed annually in the United States; however, most breast masses are benign. In order to diagnose these cancers, well over 1 million breast biopsies are performed each year. Fibroadenoma is the most common benign breast mass, whereas invasive ductal carcinoma is the most common malignancy.
If FNA is not possible during the initial presentation, ultrasonography should be considered to rule out cystic disease and delineate lesion margins.