Myths and Ty · 2019-03-05 · No Antibiotic use 1.0 1-50 days 1.45 (1.24-1.69) 51-100 days 1.53...
Transcript of Myths and Ty · 2019-03-05 · No Antibiotic use 1.0 1-50 days 1.45 (1.24-1.69) 51-100 days 1.53...
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Common Myths and Truths about Breast Health
Rena B. Kass, M.D., FACS Susann E. Schetter, D.O.
Penn State Development
Winter Academy, 2013
Naples, Florida
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1. Truth or Myth: After heart disease, breast cancer is the leading cause of death in women
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Facts
Breast cancer kills ~40,000 women / year in USA
Stroke: 96,000 deaths
Lung cancer: 71,000 deaths
Lower respiratory disease 67,000 deaths
Health.com
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World: Leading Causes of Death in Females
Rank Cause 000s %
1 Ischemic Heart Disease 670 14.9
2 Stroke 461 10.2
3 Alzheimer /other dementia 260 5.8
4 Lower Respiratory infections 183 4.1
5 Lung , Tracheal, Bronchial CA 182 4.0
6 Breast CA 173 3.8
7 Colorectal CA 141 3.1
8 COPD 140 3.1
9 Hypertensive Heart Disease 128 2.8
10 Diabetes 126 2.8
WHO, 2008, High Income Countries
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2. Truth or Myth: Only women with a family history are at risk of breast cancer?
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Biological Risk factors for Breast Cancer
Current Age 65 or older: RR 5.8
Age at first child <20: RR 1.7-1.9
Late menopause >55: RR 1.3
Singletary, Ann Surg 2003
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Risk Factors: Biopsy Results
Ductal hyperplasia of usual type: RR 1.9
Atypical ductal hyperplasia (ADH): RR 5.3
ADH with family history: RR 11
LCIS : RR 16.4
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Lifestyle risk factors for breast cancer
Alcohol intake ( 2 drinks per day) : RR 1.2 Alcohol intake ( 3 drinks per day): RR 1.4 Elevated BMI (older than 55): RR1.2-1.5 HRT with estrogen and progesterone: RR 1.3
( current user for >=5 years)
Radiation exposure (Hodgkin/fluoroscopy) RR 1.6 Antibiotic Usage RR 1.4-2.1 Indeterminate: exposure ethylene oxide, shift work,
mechanics(petroleum solvents)
Singletary, Ann of Surg, 2003 World Cancer Research Fund, AJCR 2007 Weiderpass Saf Health Work, 2011 Velicer, Jama 2004
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Antibiotic Usage Velicer, Jama 2004
No Antibiotic use
1.0
1-50 days 1.45 (1.24-1.69)
51-100 days 1.53 (1.28-1.83)
101-500 days 1.68 (1.42-2.00)
501-1000 days 2.14 (1.60-2.88)
> 1000 days 2.07 (1.48-2.89)
HR (CI)
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3. Truth or Myth: Exposing tumor to air can cause cancer to spread?
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Myth
VA hospital study of patient with lung cancer or pulmonary disease
45% patients had heard of this myth
37% patients believed it to be true
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Why people might think this
Patients might feel worse after surgery
Surgeon might find more cancer than what was expected from preoperative imaging
The cancer was already there
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4. Truth or Myth: Antiperspirants increase the risk for breast cancer
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Mixed
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Antiperspirants block the release of toxins when you sweat and
toxins build up within breast
WRONG BECAUSE
Even the strongest antiperspirant doesn’t block the perspiration under your arm
Most cancer causing substances are excreted by the kidney into the urine
Myth
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Truths: Aluminum Salts
Aluminum Salts (Eur J. Cancer Prevention, 2004) 437 women with breast cancer surveyed Frequent and early onset of deodorant usage with underarm
shaving Associated with earlier age of breast cancer diagnosis Hypothesis: Enhanced absorption of aluminum salts with dermal
barrier disruption
Nipple fluid (Mannello, J App Tox, 2011) 19 women with breast cancer had higher aluminum
concentration ( 268) in nipple fluid versus 16 women without breast cancer ( 131). Hypothesis: Exposure to antiperspirant salts
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Truths: Parabens
Parabens ( Barr, Lester J Applied Toxicology) Parabens prevent growth of microorganism in
cosmetics/shampoo Have estrogen-like effects 99% of 160 tissue samples from 40 mastectomies found
paraben esters 7/40 women never used deodorant with parabens
NO CLEAR CAUSE AND EFFECT OF UNDERARM PRODUCTS AND CANCER
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5. Truth or Myth: You can’t get breast cancer after a mastectomy
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Facts: Recurrence after a mastectomy
5-10% of patients undergoing mastectomy for breast cancer will have a chest wall or regional nodal recurrence within 10 years
Recurrence with mastectomies tend to be earlier (2-3 years) versus 3-4 years with breast conserving therapy
Up to one third of patients with local recurrence have no evidence of distant disease and can be rendered disease free with local and/or systemic therapy… SO BE AGGRESSIVE IF IT OCCURS
Hirsch et al, Up-to-date, Jan 2013 Buchanon et al, J. Am Coll Surg, 2006
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6. Truth or Myth: If I am at risk for breast cancer there is little to do but wait for it to
happen
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Breast Cancer Prevention: Lifestyle Modifications
Exercise > 4 hours /week : May decrease breast cancer by 30-40% (may be greatest benefit for premenop, norm to low body wt
Early pregnancy( <20 years old): 50% decrease in breast cancer vs nulliparous or birth > 35
Breast feeding: Decrease risk 4.3% for every 12 months of breast feeding, in addition to 7% for each extra birth
Vitamin D: Levels above 40 ng/ml were associated with decreased cancer risk
OR .56 (CI 0.41-0.78)
NCI PDQ, 2/2013 Crew K, Cancer Prevention Research 2009
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Exercise Study at Penn State
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Breast Cancer Prevention:Medications
SERM Tamoxifen: Decreases risk of invasive and non invasive
breast cancer by 50% for pre and post menopausal women Evista: Decreases of invasive risk by 50%. Not as helpful for
non-invasive breast cancer Side effects may be less
Aromatase inhibitor
Exemestene: HR .35 Absolute risk reduction 21 cancers avoided
for every 2380 participants.
NCI-PDQ, 2/2013 Goss, N Eng J Med, 2011 Zhang, Am J Health- Sys Pharm, 2012
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Breast Cancer Prevention: Prophylactic Surgery
Oophorectomies or ablation : 50 % risk reduction
Prophylactic Mastectomies: Over 90% risk reduction
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It is not your mother’s mastectomy
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Total Mastectomy
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Today: Skin Sparing Incisions May Be Possible
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Skin Sparing: Tissue Removed
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Raising thin flaps
Skin Sparing Mastectomy:Technique
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Nipple Sparing Mastectomy
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Nipple sparing(Right) versus Skin Sparing(Left) Mastectomies
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2
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7. Truth or Myth: Mastectomy provides better survival than a lumpectomy with radiation?
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Truth: Survival after Mastectomy
NSABP trial showed equivalent survival rates for mastectomy versus lumpectomy with radiation
European trial showed equivalent survival rates for mastectomy versus lumpectomy with radiation (van
Dongen, J Natl Canc Inst, 2000)
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Survival may be improved with lumpectomy and RT
Hwang et al, Cancer 2012
112,154 women with T1 or T2 Stage 1 or 2 breast cancer between 1990 and 2004. Median follow-up 10 years.
Lumpectomy with RT compared with Mastectomy patients for OS and DSS
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BCT patients (Lumpectomy+RT)
28% less likely to die from any cause
Up to 16% less likely to die from breast cancer
OS HR .81 95% CI .80-.83
Death from Chronic respiratory disease HR .46
Heart disease HR. 51
Cerebrovascular disease HR .64
CONCLUSION: Breast Conserving therapy (BCT) demonstrated survival
benefit over mastectomy for T1, T2 , Stage I or 2 disease
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8. Truth or Myth: Living near powerlines increases the risk for breast cancer
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Truths: Powerlines
576 breast cancer patients from the Long Island Breast Cancer Study Project. Lived >15 years in their home (Nassau/Suffolk)
Measured EMF at Front door, bedroom, most lived in room and ground current
FOUND: NO ASSOCIATION BETWEEN EMF and BREAST CANCER RISK
Schoenfeld, AM J of Epid, 2003
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Truths: Powerlines
England and Wales 58,404 breast cancer cases within 1000 meters of a power line
versus control
Looked at distances 0-49 versus 600-1000 meters
FOUND: NO MEANINGFUL EXCESS RISK FOR BREAST CANCER (OR 1.08, CI .77-1.51)
Elliot, Epidemiology, 2013
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9. Truth or Myth: Are all breast cancers treated the same ?
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Treatments for Breast Cancer
Breast Lumpectomy with Radiation Depends on extent of disease, location,
ability to have RT Mastectomy
Nodes Depends on extent of disease in axilla Sentinel Node Axillary dissection
Rest of Body ?Chemotherapy depends on ER, HER2,
nodes,size , genomic profiling ?Anti-hormonal therapy depends on ER statusv
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Oncotype DX™ 21-Gene Recurrence Score (RS) Assay
PROLIFERATION
Ki-67
STK15
Survivin
Cyclin B1
MYBL2
ESTROGEN
ER
PR
Bcl2
SCUBE2
INVASION
Stromelysin 3
Cathepsin L2
HER2
GRB7
HER2
BAG1 GSTM1
REFERENCE
Beta-actin
GAPDH
RPLPO
GUS
TFRC
CD68
16 Cancer and 5 Reference Genes From 3 Studies
Category RS (0-100)
Low risk RS <18
Int risk RS ≥18 and <31
High risk RS ≥31
RS = 0.47 x Her2 GRP Score -0.34 x ER GRP Score +1.04 x Prolif GRP Score +0.1 x Invasion GRP Scort +0.05 x CD-68 -0.08 x GSTM1 -0.07 x BAG1
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2727
Oncotype DX™ Clinical Validation:
RS as Continuous Predictor
0%
5%
10%
15%
20%
25%
30%
35%
40%
0 5 10 15 20 25 30 35 40 45 50
Recurrence Score
Dis
tan
t R
ecurr
ence a
t 10 Y
ears
Low Risk Group High Risk Group Intermediate
Risk Group
95% CI
My RS is 30. What is the chance
of recurrence within 10 years?
My RS is 30. What is the chance
of recurrence within 10 years?
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Penn State Cancer Institute
247 patients evaluated with Oncotype Dx score
133 patients (54%) changed systemic treatment based on Oncotype score
126 (51%) patients changed to endocrine therapy
7 (3%) patients changed to chemotherapy and endocrine
Smith, Kass et al, ASBS abstract, 2012
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10. Truth or Myth: I’m too old to get breast cancer!
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The incidence of breast cancer increases with age.
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Can you be too young?
Can occur in teens and 20’s – these are unusual tumors, related to genetic mutations.
5% of breast cancers occur < 40 y
70,000 men and women per year
American Cancer Society. Breast Cancer Facts and Figures 2011-2012. Atlanta, GA: American Cancer Society, 2011.
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11. Do fibrocystic changes increase the chance of developing cancer?
Doshi D J et al. Radiographics 2007;27:S53-S64
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Fibrocystic changes are benign
common after 30, peak in perimenopausal years
influenced by hormone levels
palpable mass, cannot differentiate from a breast cancer lump mammogram
ultrasound
Pain, tenderness, heaviness, nipple itching
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process involves inflammation and cell death within the milk ducts of the breast
chronic inflammation has been implicated in oxidative stress and as a possible etiology of breast cancer
Can this be mediated by suppressing the effects of hormones and supplementing anti-oxidants?
it’s complicated
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Harvey J, Bovbjerg V E Radiology 2004;230:29-41A
©2004 by Radiological Society of North America
baseline (left) and 2 years (right) after beginning treatment with
tamoxifen for contralateral breast cancer.
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Genetics
Australia and North America - mammograms in 951 twin pairs aged 40 – 70 y
60 – 67% Breast Density related to genetics
One third related to parity, age, menopause, BMI.
Boyd NF et al. Heritability of mammographic density, a risk factor for breast cancer. New Engl J Med 2002, 347:886-894
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not just the epithelium…
Aromatase immunoreactivity is increased in dense breast tissue Vachon C et al. Breast Cancer Res Treat (2011)125:243-252.
core biopsies
stromal cells in dense regions have higher levels of aromatase IR than the epithelial cells
enhanced estrogen synthesis
greater lifetime exposure to estrogen
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can promote tumorigenic conversion of initiated epithelial cells
fibroblasts from normal tissue suppress this transition
suppression is also proven for myoepithelial cells
key in transition to invasive disease
Stromal cells – CAF’s (carcinoma assoc. FBs)
Frontiers in Bioscience 15, 226-236, January 1, 2010. Role of myoepithelial cells in breast tumor progression. Puspa Raj Pandey1, Jamila Saidou1, Kounosuke Watabe
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Postmenopausal women with increased breast density breast density as a surrogate biomarker for risk Volumetric measurement
Interventions (5 treatment groups) – chemoprevention
data Raloxifene Omega 3 Fa’s – Fish oil
Serum biomarkers, BMI, annual screening mammograms x3.
Intervention for Prevention?
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12. If the mammogram is normal, I have nothing to worry about, right?
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mammograms are the best way to detect cancer at its earliest stages
mortality reduction
15 – 30% in women 40 – 49
29 – 40% in women 50 – 74
Truth
Tabar L et al. Efficacy of Breast Cancer Screening by Age. Cancer 1995;75:2507-17.
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did you feel something different? problem solving is necessary if a woman has symptoms
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CESM
Pitfall: Mammograms are less sensitive in younger women, and women with dense breasts
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Digital breast tomosynthesis
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13. Do Needle biopsies spread cancer cells in the breast and to the rest of the body?
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standard of care for breast masses
2004 study showed no spread of cancer vs. surgical biopsies
some “seeding” can occur along the tract
negative consequences are rare
exceptions: ovary and testes, sarcomas
Needle biopsies
Greco, M et al Breast cancer patients treated without axillary surgery: Clinical implications and biologic analysis. Annals of Surgery 232(1): 1-7
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Figure 3a. Effect of needle placement during core needle biopsy.
Youk J H et al. Radiographics 2007;27:79-94
©2007 by Radiological Society of North America
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14. If you find a lump, is it cancer?
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Breast lumps are common and 80% of breast lumps are NOT related to cancer
fibrocystic changes – Cysts can be large
hormone fluctuations
fibroadenomas
papillomas
traumatic fat necrosis
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15. Can men get breast cancer?
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1% of all breast cancers occur in men (2,200 per year)
tender breast enlargement can occur in men (gynecomastia)
this is NOT related to cancer
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16. Will having a mammogram every single year, after age 40 expose me to TOO much
radiation?
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low dose,
decreased since digital
greater impact on developing breasts
How much? average of 70 mrem
= environmental exposure over 2.5 months (340mrem/y)
soil (uranium/thorium), cosmic (protons), gases (radon)
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Mehmet Oz, MD, - incidence of thyroid cancers has been increasing among women over the past 30 years. (truth)
attributed radiation exposures during dental x-rays and mammograms as possibly contributing to this increase. (myth)
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Title: "Scatter Radiation Dose During Routine Screening Mammography to the Thyroid Gland, Salivary Glands, Lens of Eye, Red Bone Marrow of Sternum, and Uterus."
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thyroid gland received less than 2% of normal background radiation
thyroid shields can interfere with imaging of the breast
cannot see breast tissue
may need to repeat images
Radiation to the Thyroid gland, lens of eye, salivary glands and uterus are less than 4% of annual background radiation
Results
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17. Is my mother’s family history more important than my father’s?
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much emphasis placed on mothers, aunts and grandmothers
particularly important in the genetic mutations related to breast and ovarian cancer
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BRCA1 and BRCA2 genes function to repair double-strand DNA breaks
BRCA1 and BRCA2 genes act as tumor suppressor genes
Mutations in these genes may lead to transcriptional activation of the Estrogen Receptor leading to altered hormonal regulation of the breast and ovarian epithelium
BRCA1 and BRCA2 Gene Mutations
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BRCA1 mutation
Risk of breast cancer is 60% (compared to 12.5%)
Risk of contralateral breast cancer is 65% (compared to 1% per year)
Risk of ovarian cancer is 45% (compared to 1.5%)
Male breast cancer is 3% (compared to 0.1%)
BRCA1 Gene Mutation
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BRCA2 mutation Risk of breast cancer is 55% (compared to 12.5%)
Risk of contralateral breast cancer is 50% (compared to 1% per year)
Risk of ovarian cancer is 25% (compared to 1.5%)
Risk of prostate cancer is 40% (compared to 15%)
Risk of male breast cancer is 12% (compared to 0.1%)
Mutations in the BRCA 2 gene have a significant affect on male breast cancer and prostate cancer
BRCA2 Gene Mutation
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Women with breast cancer:
Age < 30 years of age
Age < 50 years of age with at least one relative with breast or ovarian cancer < 50 years of age
At any age with breast cancer < 50 years of age or one relative with ovarian cancer
With both breast and ovarian cancer or multiple primary breast cancers
Who should be tested for BRCA1 or BRCA2 gene mutations?
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Picture of the breast center
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