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Learn about various breast cancer treatments including surgery choices like lumpectomy and mastectomy, lymphatic drainage evaluation, sentinel lymph node procedure, radiation therapy, brachytherapy, and reconstruction techniques such as TRAM and DIEP flaps. Hormone therapy options like Tamoxifen and Aromatase inhibitors are also discussed.
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CHAPTER 23 Breast Cancer Treatments
THE GOAL: SURVIVAL • Patients do whatever it takes to survive • 87% alive after 5 years • 80% alive after 10 years
THE GOAL: SURVIVAL • Localized disease (confined to breast) • 97.6% alive after 5 years • 93.5% alive after 10 years • Regional disease (spread beyond breast) • 80% alive after 5 years • 67% alive after 10 years
SPECIMEN MARGIN A. Tumor extends to edge of specimen. B. Tumor surrounded by 1-2 cm of normal tissue.
SURGICAL CHOICES A. Mastectomy B. Lumpectomy; diagonal line shows extent of tumor; dotted line signifies area surgeon will remove
LUMPECTOMY • Removes tumor plus small amount of healthy tissue • Lymph node evaluation • Radiation therapy kills cancer cells left behind after surgery.
6 TYPES OF MASTECTOMY • Simple (total) • Modified radical • Radical • Partial • Nipple sparing • Skin sparing
MODIFIED RADICAL MASTECTOMY • Most common mastectomy • Entire breast is removed • Pectoral muscles left intact • Lymph node evaluation
LYMPHATIC DRAINAGE • Axillary lymph node basin is primary route • Internal mammary and supraclavicular regions are secondary routes
LYMPH NODE SAMPLING • Axillary dissection • Sentinel lymph node
SENTINEL LYMPH NODE (SLN) • First lymph node that receives lymphatic drainage from tumor bed • If negative for tumor, no need to check further • Pathologist able to check for micrometastases
SLN PROCEDURE A. SLN drains tumor bed B. Radioactive material injected in tumor bed C. Massage breast D. Geiger counter locates SLN E. Hot spot identifies SLN
EXTERNAL RADIATION THERAPY • Can reduce recurrence up to 70%
RADIATION THERAPY IS REGIONAL TREATMENT • Always given with lumpectomy • May/may not be given with mastectomy
BRACHYTHERAPY • Internal radiation therapy A. Device implanted in lumpectomy cavity C. Device easily removed upon conclusion of this week-long treatment
RECONSTRUCTION AFTER MASTECTOMY • TRAM flap • DIEP flap • Latissimus dorsi flap • SGAP/IGAP flap
TRAM FLAP • Transverse rectus abdominis muscle • Most common surgery
DIEP FLAP • Deep inferior epigastric perforator • Main blood vessel in donor tissue
LATISSIMUS DORSI FLAP A. Portion of back muscle becomes donor tissue B. Tissue tunneled to chest wall C. Disadvantage: Visible “divot” at donor site
SGAP/IGAP FLAP • Rarely done • High failure rate
HORMONE THERAPY • Tamoxifen • Raloxifene • Aromatase inhibitors