Background information Flashcards
Screening
Recommended for all women 40+ with annual mammogram
Consider BRCA1/2 testing if strong family history
Risk Factors
Personal hx of breast CA or DCIS BRCA1/2 TP53 Family hx Older age at 1st live birth Nulliparity Early menarche Age Female BMI Race Hormonal therapy Alcohol Smoking Physical inactivity
Consider risk reduction if:
History of LCIS 5 yr Gail Risk >/= 1.7% >20% Lifetime risk Genetic predisposition Known gene mutation Hx of thoracic XRT <30 yo Life expectancy 10+ years
Risk reduction strategies
Prophylactic mastectomies
Bilateral oophorectomy
Start screening at age 25
Premenopausal: tamoxifen
Postmenopausal: aromatase inhibitors or tamoxifen
Drugs effective only for preventing ER+ breast cancer.
Tamoxifen ineffective for BRCA mutation.
Incidence and mortality
Most common cancer in women
Second leading cause of cancer-related death in women
Pathology
80% adenocarcinoma
Common metastatic sites
Skin Brain Bone Liver Lung Lymph nodes
Adjuvant therapy candidates
Tumor >1 cm, yes
Tumor 0.6-1 cm, consider if high risk
Neoadjuvant therapy candidates
Patients who meet all criteria except their tumor is too big
Oncotype DX
<18 low risk hormone therapy
18-30 moderate risk
31+ high risk chemo +hormone therapy
Used to predict risk of recurrence or death in ER/PR+ invasive breast cancer (N-, HER2-)
Diagnosis
H & P Mammogram +/- ultrasound Biopsy (Fine-needle most common) CBC, CMP ER//PR status (older, slower growing) HER2 status (younger, faster growing)