Breast Cancer

Topics: Cancer, Breast cancer, Chemotherapy Pages: 5 (1207 words) Published: August 27, 2010
Case Study 1: Breast Cancer

Situation: The client is a 50-year-old female teacher who was notified of an abnormal screening mammogram. Diagnosis of infiltrating ductal carcinoma was made following a stereotactic needle biopsy of a 1.5 x 1.5 cm lobulated mass at the 3:00 position in her left breast. The client had a modified radical mastectomy with lymph node dissection. The sentinel lymph node and 11 of 16 lymph nodes were positive for tumor. Estrogen receptors and progesterone receptors were both positive. Further staging work-up was negative for distant metastasis. Her final staging was stage IIB. Her prescribed chemotherapy regimen is 6 cycles of CAF after a single-lumen central line was placed.

1.The client asks you to help her understand how big her tumor was.

Draw a 1.5 x1.5 cm circle. This gives a good understanding of the size of the actual tumor.

2.Describe the biopsy technique used for this diagnosis.

• Stereotactic needle biopsy includes aspiration of tumor cells through a special biopsy needle by immobilizing the breast, determining the exact location of the tumor through x-ray examination, and then inserting the needle into the precise location. • The specimen is then analyzed by a pathologist and a diagnosis made.

3.Discuss the implications of a positive sentinel node.

Before removal of the tumor, radioactive dye is instilled into the tumor bed. During surgery the surrounding lymph nodes are evaluated for the presence of the radioactive dye. The sentinel node is defined as the initial node that drains the tumor bed. The sentinel node is removed and evaluated by a pathologist for presence of cancer. Presence of cancer in the sentinel node is an indication that the disease is metastatic at the time of diagnosis.

4.Using the TNM staging system, what would her classification be?

• Tumor size less than 2 cm: T1
• Lymph node involvement is positive: N1
• Metastasis is negative: M0

5.What is the significance of her hormone receptor status?

When a tumor is hormone receptor positive—in this case both estrogen and progesterone positive—the tumor grows in the presence of these hormones. Reducing the level of these hormones will slow the rate of tumor growth.

6.Surgical intervention is called the primary treatment for breast cancer. Follow-up chemotherapy is called what kind of therapy?

Surgery is the primary treatment for breast cancer. Chemotherapy is the secondary therapy, making it the adjuvant therapy.

7.List the chemotherapy drugs used for her treatment. List any side effects and special considerations associated with the use of these drugs.

Her treatment involves CAF (cyclophosphamide, Adriamycin [doxorubicin], 5-fluorouracil).

Cyclophosphamide is an alkylating agent.
Its major side effects are myelosuppression, alopecia, hemorrhagic cystitis, N/V, cardiotoxicity, pulmonary fibrosis, and hypersensitivity reactions.
Ensure that the patient is aware to drink plenty of fluid and to urinate frequently to decrease the possibility of hemorrhagic cystitis.

Doxorubicin is an antitumor antibiotic. Its major side effects are myelosuppression, cardiotoxicity, N/V, alopecia, red urine, and dermatitis in previously radiated areas.

Doxorubicin is a vesicant, which means it can cause necrosis of tissue if the IV infiltrates during the infusion. Vesicants should only be given in IVs that are new (less than 24 hours) and exhibit good blood return. There is a maximum lifetime cumulative dose that must not be exceeded. Inform the patient of the red urine.

5-Fluorouracil is an antimetabolite. Its major side effects include myelosuppression, diarrhea, oral and GI ulcerations, alopecia, and N/V.

Because all these chemotherapeutic agents cause myelosuppression, when her blood counts are low, she needs to be monitored closely for symptoms related to infection, anemia, and thrombocytopenia.

8.Calculate the client’s body surface...
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