Flashcards in Breast Cancer Panel Deck (19):
What are the two major risk factors for breast cancer?
exposure to estrogens (null parity, early menarche, oral estrogens, late menopaus, late age of first delivery, no breast feeding and obesity)
genetic mutation (either inherited through exposure), mutations increase with age
(being woman seriously increases risk)
OTHER: breast radiation e.g. for Hodgkins
Name two germline mutations that put a person at higher risk for breast cancer.
BRCA 1 and 2
What are important aspects of H&P to focus on when interviewing for breast cancer?
hx: pain, nipple discharge, skin changes, induration, duration
PE: nipple discharge, breast asymmetry, masses, skin changes (peau d'orange), axillary adenopathy, supraclavicular adenopathy
What are the most common imaging options available?
mammogram (screening and diagnostic), ultrasound and MRI
masses or architectural distortion, (irregular, linear) calcifications on mammogram can be a big clue to continue investigation (possible DCIS)
What findings on U/S suggest tumor?
irregular/ fuzzy boarder
(smooth boarders with hemogenous consistency- fibroadenoma)
(smooth boarders and dark center- cyst)
(mass growing into nipple is a papilloma)
What biopsy options are available?
fine needle aspiration (sample of cells but does not preserve architecture - cannot determine if invasive) can be good to aspirate a suspected cyst (if any remains beware of cancer in addition)
core needle biopsy (big needle) can be radiology guided to sample calcification
excisional biopsy (more extensive sampling) can be used in case of weight restriction
Contrast the normal and abnormal structure of breast tissue.
normal: glandular tissue within fibroduct structures; glandular tissue is lined by two cell layers (epithelium and myoepithelium)
abnormal: increased number of nuclei (proliferation, ductal hyperplasia) irregular lobules, sometimes sheets of cells, irregular architecture overall
(if still within the glands its not invasive)
How would a pathologist test for genetic mutations in a tumor?
immunostain for markers like p53 or ER/PR
FISH testing for HER-2 NEU
What nodes typically drain the breast?
supraclavicular, mammary and **auxillary nodes
Summarize generally stage I- stage IV breast cancer.
stage I -small tumor
stage II- large tumor or small with LN
stage III- tumor invasion of skin, chest wall or large tumor + LN
stage IV- distant metastases (incurable)
What are ways you may work up a patient for the potential of metastatic disease?
signs or symptoms of metastais
lab studies including CBC, liver function
chest imaging: CXR and CT scan
(focus on likely places of metastasis: bone, liver and lung)
Contrast the approaches for treatment of local v. systemic cancer.
surgery and radiotherapy can be used to address local disease
chemotherapy and endocrine therapy are used to address systemic disease
What are the objectives in surgical treatment?
surgery acts as local source control by removing the primary tumor, allows for staging of the tumor, and allow for evaluation of the axilla
What are the current surgical options for breast cancer?
mastectomy (more likely with large tumor)
breast conservation with radiation (lumpectomy)
both have similar overall survival with different rates of recurrence (having to go back for surgery)
Based on imaging characteristics, tumor characteristics and patient preferences
What are the surgical management options regarding the axilla?
sentinel lymph node biopsy (preferable)
axillary lymph node dissection (usually level 1 and 2)
When is radiation recommended as an adjunct therapy?
is standard of care for most women after lumpectomy (does not offer advantage for mortality)
if there are positive nodes it can make a difference in mortality and it can reduce the very high rate of recurrance
higher risk patients benefit most (those with positive surgical margins, large tumor size, 4+ positive nodes, 1-3 nodes positive only with other risk factors)
can be used for palliation (decrease pain and improve quality of life)
What is the standard regimen for radiation therapy?
daily treatments for 6 weeks with the target including breast or chest wall +/- nearby nodes (axillary, supraclavicular, internal mammary)
Describe the systemic model of cancer disease.
cancer is assumed to be a systemic disease and is either scattered at diagnosis or won't metastasize