Preparation for procedure
If you are on any blood thinners, such as heparin, coumadin, or even ASPIRIN, you will need to inform us as soon as possible. You may need to be off blood thinners for as long as five to seven days before the biopsy.
You can take your other medications, and eat your usual breakfast before the biopsy.
The MRI-guided needle biopsy procedure will be performed by one of our breast center physicians who specialize in needle biopsy, with assistance from a radiologic (x-ray) technologist, also with a background assisting in this procedure.
After arriving at the office, you will change into a hospital gown, and you will be escorted to the MRI room. An IV will be started. The technologist will ask you to lie face down on the MRI table, just as you did for your Breast MRI. Your breast will be compressed with a compression paddle. MRI images will be taken, and after IV contrast is given, the exact position of the biopsy is determined. Next, the physician will numb the entire biopsy area by injecting a local anesthetic into your breast. This will be done with a very tiny needle, and you may feel a brief sting in your breast at the injection site.
After the local anesthetic has taken effect, the physician will advance the biopsy needle into your breast, at the numbed area. Once placement is confirmed by additional MRI images, the physician will acquire tissue samples through the needle. When the physician has retrieved all the samples, a tiny (1/8”) metallic clip will be left in place to permanently mark the biopsy site. You will not be able to see or feel this clip, but it is extremely helpful in confirming accurate biopsy and in assessing your mammograms in the future. Placing this clip is an absolute requirement of this procedure. The compression paddle will be released from your breast and the technologist will then apply pressure to the biopsy site for five to ten minutes to prevent bleeding, and reduce any possible bruising. Next, a regular mammogram will be obtained, which will serve as a useful baseline for future mammography. Afterwards, a dressing will be applied which you will wear home. You will not need any stitches or sutures. You will go home with printed post-procedure care instructions.