Breast Flashcards
(47 cards)
sensation to medial arm
intercostobrachial n. (off 2nd intercostal n), can be sacrificed
innervation to serratus anterior; injury called?
long thoracic n.
winged scapula
innervation to latissimus dorsi and injury?
thoracodorsal n.
weak arm adduction/pull ups
innervation to pec major/pec minor
medial pectoral n to both
lateral pectoral n to pec minor only
Batson’s plexus
Clinical significance
valveless vertebral veins
allows direct mets to spine from breast
Poland syndrome
amastia, hypoplastic shoulder, no pectoralis
Mastodynia and tx?
Breast pain
Rx with danazol, OCP, evening primrose oil, tamoxifen (first line)
Vitamin E not useful
Mondor’s disease and tx
thrombophlebitis of superficial vein of breast
Cord like mass laterally
Rx: NSAIDs
T1
T2
T3
T4
T1<2cm
T2 2-5 cm
T3 >5 cm
T4 skin or chest wall involvement
N1
N2
N3
positive ax nodes
matted or fixed nodes
internal mammary nodes
Stage I
Stage II
Stage III
Stage IV
T1
up to T2N1 or T3N0
T4 or N2
Mets (include supraclavicular nodes, unlike lung cancer)
Breast met MC sites
bone
lung
brain
Her2Neu
marker for breast CA
implies worse prognosis
Herceptin now available for rx
Worse prognosis markers
Erb B 2
p53
cathepsin
How long does it take approximately for tumor to grow to 1 cm?
approximately 5 years
Tamoxifen risks
Increase endometrial cancer
DVT
increased risk of atypical hyperplasia
raises risk x4
best prognosis of ER/PR
ER+PR+ > ER-PR+ > ER+PR- > ER-PR-
Tx of DCIS
Precursor for invasive carcinoma
Lumpectomy + radiation
Mastectomy for high grade/large tumor/poor margins
Tx of LCIS
30-40% develop invasive carcinoma (either breast) Tx options: -nothing -tamoxifen -b/l mastectomy
Comedo breast cancer tx
Mastectomy
Poor prognosis
Paget’s disease of the breast
Eczematous lesions on nipple, there is underlying DCIS or ductal CA
Cystosarcoma phyllodes (phyllodes tumor) and tx?
10% malignant
Rare nodal mets
HEMATOGENOUS spread (not lymphatic) because it’s a SARCOMA
Tx: WLE, no ALND
BRCA risk of cancer
85% have CA by age 70
BRCA1 ovarian CA (50%)
BRCA2 male breast CA