A breast biopsy is usually necessary for many women with an intraductal papilloma. A needle biopsy can obtain a sample of tissue or fluid from a breast cyst. Large or deep breast lumps may require an open biopsy.

Examples of breast biopsy:

• Needle biopsy
• Open biopsy
• Sentinel node biopsy:
• Biopsy of the lymph nodes near the breast
• Video of breast biopsy