Breast Biopsy

1 What is a Breast Biopsy?

A breast biopsy is a procedure to remove a sample of breast tissue for laboratory testing. A breast biopsy is a way of evaluating a suspicious area in your breast and determine if it is breast cancer.

A breast biopsy is a way of evaluating a suspicious area in your breast and determine if it is breast cancer.

There are several types of breast biopsy procedures. A breast biopsy provides a sample of breast tissue to be tested which will provide a potential diagnosis.

The lab also determines whether you need additional surgery or other treatment.

2 Reasons for Procedure

Your doctor can recommend a breast biopsy for the following reasons:

  • A lump or thickening in your breast that strikes suspicions of breast cancer.
  • Your mammogram shows a suspicious area in your breast.
  • An ultrasound scan reveals a suspicious finding.
  • Your breast MRI reveals a suspicious finding.
  • You have unusual nipple changes, which include crusting, scaling, dimpling skin or bloody discharge.

3 Potential Risks

Potential risks associated with breast biopsy include the following:

  • Bruising and swelling of the breast.
  • Infection or bleeding at the biopsy site.
  • Altered breast appearance, depending on how much tissue is actually removed and how your breast heals.
  • Additional surgery or other treatment depending on biopsy results.

Contact your doctor if you develop a fever, if the biopsy site becomes red or warm, or if you have unusual drainage from the biopsy site.

These can be the signs of an infection that require immediate attention.

4 Preparing for your Procedure

Preparing to the breast biopsy, tell your doctor if you:

  • Have any allergies.
  • Have taken aspirin in the last seven days.
  • Are taking blood-thinning medications (anticoagulants).
  • Are unable to lie on your stomach for a long period of time.

If Magnetic Resonance Imaging (MRI) will be used to do your breast biopsy, tell your doctor if you have a cardiac pacemaker or any electronic device implanted in your body if you are pregnant or think you might be.

MRI si generally not recommended in these cases. It is very vital to wear a bra to your appointment.

Your health care team may place a cold pack against the biopsy site after the procedure has been completed, the bra can hold the cold pack in place and provide support for your breast.

5 What to Expect

Here’s what you can expect before, during, and after your breast biopsy procedure.

Several breast biopsy procedures are used to obtain a tissue sample from the breast. Your doctor may recommend a particular procedure based on the size, location and other characteristics of the breast abnormality.

If it's not clear why you're having one type of biopsy instead of another, ask your doctor to explain. For many biopsies, you'll get an injection to numb the area of the breast to be biopsied.

Types of breast biopsy include Fine-needle aspiration biopsy. This is the simplest type of breast biopsy and may be used to evaluate a lump that can be felt during a clinical breast exam.

For the procedure, you lie on a table. While steadying the lump with one hand, your doctor uses the other hand to direct a fine needle - more slender than that used to obtain a blood sample or tissue sample - into the lump.

The needle is attached to a syringe that can collect a sample of cells or fluid from the lump. Fine-needle aspiration is a quick way to distinguish between a fluid-filled cyst and a solid mass and, possibly, to avoid a more invasive biopsy procedure.

If, however, the mass is solid, it will need further evaluation. Core needle biopsy. This type of breast biopsy may be used to assess a breast lump that's visible on a mammogram or ultrasound or that your doctor feels (palpates) during a clinical breast exam.

A radiologist or surgeon uses a thin, hollow needle to remove tissue samples from the breast mass, most often using ultrasound guidance. Several samples, each about the size of a grain of rice, are collected and analyzed to identify features indicating the presence of disease.

Depending on the location of the mass, other imaging techniques, such as mammography or MRI, may be used to guide the positioning of the needle in a core needle biopsy depending on the location of the mass.

Stereotactic biopsy. This type of biopsy uses mammograms to pinpoint the location of suspicious areas within the breast. For this procedure, you generally lie facedown on a padded biopsy table with one of your breasts positioned in a hole in the table.

You may need to remain in this position for 30 minutes to one hour. The table is raised several feet, and the equipment used by the radiologist is positioned beneath the table.

Your breast is firmly compressed between two plates while mammograms are taken to show the radiologist the exact location of the area for biopsy. The radiologist makes a small incision - about 1/4-inch long (about 6 millimeters) - into your breast.

He or she then inserts either a needle or a vacuum-powered probe and removes several samples of tissue. The samples are sent to a lab for analysis. Ultrasound-guided core needle biopsy.

This type of core needle biopsy involves ultrasound - an imaging method that uses high-frequency sound waves to produce precise images of structures within your body.

During this procedure, you lie on your back or side on an ultrasound table. Holding the ultrasound device (transducer) against your breast, the radiologist locates the mass within your breast, makes a small incision insert the needle and takes several core samples of tissue to be sent to a lab for analysis.

MRI-guided core needle biopsy. This type of core needle biopsy is done under the guidance of MRI - an imaging technique that captures multiple cross-sectional images of your breast and combines them, using a computer, to generate detailed 3-D pictures.

During this procedure, you lie facedown on a padded scanning table. Your breasts fit into a hollow depression in the table. The MRI machine provides images that help determine the exact location for the biopsy.

A small incision of about 1/4-inch long (about 6 millimeters) is made to allow the core needle to be inserted. Several samples of tissue are taken and sent to a lab for analysis.

Surgical biopsy. During a surgical biopsy, a portion of the breast mass is removed for examination (incisional biopsy) or the entire breast mass may be removed (excisional biopsy, wide local excision or lumpectomy).

A surgical biopsy is usually done in an operating room using sedation given through a vein in your hand or arm (intravenously) and a local anesthetic to numb your breast.

If the breast mass can't be felt, your radiologist may use a technique called wire localization to map the route to the mass for the surgeon. During wire localization, the tip of a thin wire is positioned within the breast mass or just through it.

This is usually done right before surgery. During surgery, the surgeon will attempt to remove the entire breast mass along with the wire. To help ensure that the entire mass has been removed, the tissue is sent to the hospital lab to check the edges (margins) of the mass.

If cancer cells are present in the margins (positive margins), some cancer may still be in the breast, and more tissue must be removed. If the margins are clear (negative margins), then cancer has been removed adequately.

At the time of the breast biopsy, a tiny stainless steel marker or clip may be placed in your breast at the biopsy site. This is done so that if your biopsy is positive, your doctor or surgeon can locate the biopsy area to remove more breast tissue surgically.

After a breast biopsy With all types of breast biopsy except a surgical biopsy, you'll go home with only bandages and an ice pack over the biopsy site. Although you should take it easy for the rest of the day, you'll be able to resume your normal activities within a day.

Bruising is common after core needle biopsy procedures. To ease pain and discomfort after a breast biopsy, you may take a nonaspirin pain reliever containing acetaminophen (Tylenol, others) and apply a cold pack as needed to reduce swelling.

If you have a surgical biopsy, you'll likely have stitches (sutures) to care for. Your health care team will tell you how to protect your stitches.

6 Procedure Results

It can be after several days when the results of a core needle biopsy are available. Following the biopsy procedure, your breast tissue is sent to a laboratory, where a doctor who specializes in analyzing blood and tissue (pathologist) examines the sample using a microscope and special procedures.

The pathologist then prepares a pathology report that is sent to your doctor, who finally shares the results with you. The pathology report includes details about the size, colour, and consistency of the tissue samples, the location of the biopsy site, and whether cancer or precancer cells were present.

If your breast biopsy shows normal results of benign breast change, you doctor will need to see if the radiologist and pathologist agree on the findings.

In some cases, the opinions of these two experts may clash., For example, your radiologist may find that your mammogram results suggest breast cancer or precancer, but your pathology report may suggest normal breast tissue.

If this case arises, you will need to undergo more surgery to obtain more tissue to further evaluate the area.

If your pathology report states that breast cancer is present, it will include information about cancer itself, such as the type of breast cancer and surplus information, such as whether the cancer is hormone receptor positive or negative.

You and your doctor can always develop a treatment plan that best suits your needs.

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