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Breast cancer : hormone therapy brief outline

The treatment of breast cancer involves interventions such as surgery, radiotherapy, chemotherapy, hormone therapy and biological therapy. This table outlines the guidance by NICE on the use of hormone therapy for breast cancer. Please also refer to the topic of aromatase inhibitors and breast cancer basics for a better understanding of this subject.

CategoryPatient GroupRecommendation
Endocrine TherapyAll with invasive breast cancerUse surgery and systemic therapy, not just endocrine therapy, unless significant comorbidity exists.
Adjuvant Endocrine TherapyMen and Premenopausal WomenUse tamoxifen for ER-positive tumors.

Postmenopausal WomenUse aromatase inhibitor for medium/high risk of disease recurrence and tamoxifen for low risk or if aromatase inhibitors are not tolerated.
Ovarian Function SuppressionPremenopausal WomenConsider in addition to endocrine therapy for ER-positive tumors. Discuss benefits and risks.
Extended Endocrine Therapy (Beyond 5 years)Suitable candidatesDiscuss benefits and risks.

Postmenopausal Women (medium/high risk)Offer aromatase inhibitor after 2-5 years of tamoxifen.

Postmenopausal Women (low risk)Consider aromatase inhibitor after 2-5 years of tamoxifen.

All with ER-positive tumorsConsider extending tamoxifen duration beyond 5 years.
Endocrine Therapy for DCISWomen with ER-positive DCIS (post breast-conserving surgery)Discuss benefits and risks. Offer therapy if radiotherapy is recommended but not...

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