A lumpectomy is a type of breast-conserving surgery that may be used as a part of a treatment plan for breast cancer. During a lumpectomy, the cancerous lump and a portion of the breast tissue around the cancerous lump are removed. However, the breast itself remains intact. The surgeon may also remove some of the lymph nodes under the arm to determine if the cancer has spread.
Lymph nodes are bean-shaped structures that drain fluid from the breast area, upper arms, the neck, and underarm regions. Often breast cancer spreads to these lymph nodes, thereby entering the lymphatic system and allowing the cancer to spread to other parts of the body.
Radiation therapy is often administered following a lumpectomy to destroy cancer cells that may not have been removed during the lumpectomy procedure. In some cases, chemotherapy and radiation are given following a lumpectomy.


Each breast has 15 to 20 sections, called lobes, that are arranged like the petals of a daisy. Each lobe has many smaller lobules, which end in dozens of tiny bulbs that can produce milk.
The lobes, lobules, and bulbs are all linked by thin tubes called ducts. These ducts lead to the nipple in the center of a dark area of skin called the areola. Fat fills the spaces between lobules and ducts.

Breast Anatomy


There are no muscles in the breast, but muscles lie under each breast and cover the ribs.
Each breast also contains blood vessels and vessels that carry lymph. The lymph vessels lead to small bean-shaped organs called lymph nodes, clusters of which are found under the arm, above the collarbone, and in the chest, as well as in many other parts of the body.



Studies have shown that women who undergo lumpectomy followed by radiation have similar overall survival rates as those who undergo mastectomy. Therefore, lumpectomy is a viable treatment option for some women with small, localized breast cancers.
There may be other reasons for your physician to recommend a lumpectomy.
In some cases, a lumpectomy may not be recommended as the treatment of choice. Reasons for not undergoing lumpectomy may include, but are not limited to, the following:

  • previous radiation therapy in the breast/chest area
  • two or more cancerous areas present within the same breast
  • tumor that is large relative to a smaller-sized breast
  • connective tissue disease(s) that are sensitive to radiation therapy
  • pregnancy at the time of radiation following surgery
  • tumor size larger than two inches that does not decrease in size following chemotherapy
  • residual tumor left over from previous lumpectomy


As with any surgical procedure, complications may occur. Some possible complications of lumpectomy include, but are not limited to, the following:

  • temporary swelling of the breast
  • breast disfigurement (size and shape)
  • hardness due to scar tissue that can form at the site of the incision
  • wound infection or bleeding
  • lymphedema – swelling of the arm due to lymph node removal. This is preceded by early symptoms, which include a feeling of tightness in the arm, pain, redness, and decreased flexibility of the arm, hand, and wrist.

Seroma (clear fluid trapped in a wound) is normally present after a mastectomy. Troublesome seromas can be drained in a surgeon’s office and treated with compression or an injection that helps to harden the space in the breast if necessary.
There may be other risks depending upon your specific medical condition. Be sure to discuss any concerns with your physician prior to the procedure.


Lumpectomy After the procedure, you will be taken to the recovery room for observation. Your recovery process will vary depending upon the type of procedure performed and the type of anesthesia that is given. Once your blood pressure, pulse, and breathing are stable and you are alert, you will be taken to your hospital room.
Generally, patients are able to go home the same day or within one to two days following a lumpectomy.
Once you are home, it is important to keep the surgical area clean and dry. Your physician will give you specific bathing instructions. If adhesive strips are used, they should be kept dry and generally will fall off within a few days.
The extent of pain depends on the amount and location of tissue that is removed during surgery. Soreness should decrease gradually. Take a pain reliever for soreness as recommended by your physician. Aspirin or certain other pain medications may increase the chance of bleeding. Be sure to take only recommended medications.
Your physician may instruct you to wear a bra continuously for support for a period of time.
Normal activities can usually be resumed within two weeks. Meanwhile, you should avoid strenuous activities, particularly those that involve extensive use of the arm, such as cleaning windows or vacuuming for long periods. Your physician will advise you about when you can start driving again and when you can return to work.
Lumpectomy may be followed by radiation therapy. Your physician will advise you about this depending on your particular situation.
Notify your physician to report any of the following:

  • fever and/or chills
  • redness, swelling, or bleeding or other drainage from the incision site
  • increased pain around the incision site
  • swelling or numbness and/or tingling of the affected arm if lymph nodes have been removed


If lymph nodes are removed during a lumpectomy procedure, the drainage of lymphatic fluid from the arm on the surgical side may be affected. Problems with lymphatic drainage may result in arm swelling and an increased risk for infection from trauma to the arm. In addition, there is an increased risk for blood clots in the blood veins of the armpit because of surgical trauma in the area.
Life-long precautions to help prevent problems in the affected arm after lymph node dissection include, but are not limited to, the following:

  • no needle sticks or IV insertions in the affected arm
  • no blood pressure measurements in the affected arm
  • follow instructions regarding exercises of the arms carefully
  • avoid injuries, such as scratches or splinters, to the affected arm
  • elevate the arm, with the hand above the elbow, to assist with drainage of lymphatic fluid
  • wear gloves when gardening or performing any activity in which there is a risk for skin puncture of the fingers and/or hands, or when using strong or harsh chemicals such as detergents or household cleaners
  • avoid sunburns
  • use an electric shaver rather than a razor with a blade to shave under the arm
  • avoid any constrictive items on the affected arm, such as elastic cuffs or tight watches or other jewelry
  • use the unaffected arm to carry heavy packages, bags, or purses
  • avoid insect bites or stings by using insect repellents and/or wearing long sleeves

Your physician may give you additional or alternate instructions after the procedure, depending on your particular situation.