Breast Cancer Flashcards
Non-modifiable risk factors for BC
female, older age, FMH, PMH, genetics (BRCA1 and BRCA2), breast changes found on biopsy, ionizing radiation, breast density, early menarche (before age 12), late menopause (after age 55)
Modifiable risk factors for BC
nulliparity or older age at first childbirth, postmenopausal HRT, postmenopausal obesity, physical inactivity, alcohol consumption
BC patho: in situ BC
Stays within the lobular and ductal epithelium and doesn’t spread
BC patho: invasiv BC
Spreads outside the epithelium to other parts of the body
Clinical presentation of BC
May be asymptomatic if small
Palpable, painless mass
Breast/nipple pain
Nipple discharge, retraction, or dimpling
Skin changes- redness, warmth, edema
Swollen lymph nodes
Signs/symptoms of metastatic disease are dependent on the site of metastasis
BC subtypes: hormone receptor positive (ER/PR+) features
Slower growing, more responsive to hormonal therapy
BC subtypes: HER2 positive features
Grows faster than ER/PR+, due to overstimulation of the receptors that control cell growth and replication
BC subtypes: triple negative (ER/PR/HER2 negative) features
Grows quickly, responds only to chemo
BC staging
Uses TNM staging
BC treatment: LCIS
No treatment, just regular monitoring
BC treatment: DCIS
lumpectomy and radiation OR mastectomy +/- endocrine therapy
Treatment for invasive BC
Surgery and radiation
Systemic therapy
BC treatment: if you’re HER2+
You get HER2 therapy and chemo
HER2+ chemo regimens
Docetaxel/carboplatin/trastuzumab +/- pertuzumab q3w x6 doses
Paclitaxel + trastuzumab qw x12 weeks
Pertuzumab criteria
≥T2 or ≥N1, HER2 (+) tumor, high risk of recurrence
HER2+ post-chemo regimens
continue trastuzumab or pertuzumab/trastuzumab to complete 1 year of treatment
BC treatment: triple negative patients
CHEMO ONLY
Triple negative chemo regimens: neoadjuvant therapy
pembrolizumab q3w x4 doses and weekly paclitaxel/carboplatin x12 doses → pembrolizumab and doxorubicin/cyclophosphamide q3w x4 doses
Triple negative chemo regimens: adjuvant therapy
pembrolizumab q3w x9 doses, can also add capecitabine if didn’t receive complete response
Hormone-positive BC: premenopausal women
Tamoxifen or aromatase inhibitor WITH ovarian suppression with an oophorectomy or LHRH agonist
Hormone-positive BC: postmenopausal women
Aromatase inhibitor (preferred) OR tamoxifen (I guess)
BC treatment: ER/PR+ but HER2- and the tumor is >0.5cm
Oncotype Dx to determine if you qualify for chemo
BC chemo regimen: ER/PR+, HER2- and tumor is >0.5cm
Dose-dense doxorubicin/cyclophosphamide (AC) x4 doses → paclitaxel q2w x4 doses
Dose-dense AC x4 doses → weekly paclitaxel x12 doses
Docetaxel and cyclophosphamide (TC) q3w x4-6 doses
Goal of therapy in Stage IV BC
palliation, prolongation of life, maximize QoL