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Published byLouisa Greene Modified over 9 years ago
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Beyond 5 years Francis F. Lopez, MD Medical Oncology
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Bakit 5 years????
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Risk of Recurrence
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10 year over-all survival by stage
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Outline Cancer treatment-induced bone loss (CTIBL) Overweight and obesity Contra-lateral breast cancer Cardiac Complications from Irradiation Neurologic complications
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Cancer treatment- induced bone loss
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Bone is a dynamic tissue undergoing resorption and formation throughout life resulting in a net bone balance In osteoporosis, resorption usually exceeds formation with the net effect of bone loss, decreased strength, and an increased risk of fracture Cause: hormone depletion promotes osteoporosis and increases the risk of fracture
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Hormone depletion (hypogonodal) state induced by cancer therapies Premature menopause resulting from chemotherapy Deliberate ovarian ablation Hypoestrogenemia secondary to aromatase inhibitors (arimidex, femara and aromasin) Chemotherapy
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chemotherapy Bone loss with chemotherapy extends to postmenopausal women, suggesting that chemotherapy has a direct effect on bone American Journal of medicine 114:653-659, 2003American Journal of medicine 114:653-659, 2003
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Aromatase inhibitors (AI) Women treated with AI were 2.5 times more likely to suffer a fracture compared to women treated with tamoxifen
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Fracture Risk Following end of treatment fracture rates were similar in both groups (RR=0.98 (0.81-1.32), p=0.5 J. Cuzick on behalf of ATAC/LATTE Trialists’ Group. Poster presented at 12 th Milan Breast Cancer Conference 2010
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Major risk factors for osteoporosis and fracture Prior fragility fracture (>40 years of age) Age (>65 years) Low bone mineral density (T-score < -2.5) Family history of osteoporotic fracture Vertebral compression fracture Osteopenia apparent on x-ray film Hypogonadism Early menopause (before age 45)
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Minor risk factors for osteoporosis and fracture Rheumatoid arthritis Low dietary calcium intake Smoker Excessive alcohol intake Excessive caffeine intake (>4 cups/day) Weight (<120 pounds) Weight loss > 10% of weight at age 25
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Diagnostic tests Dual energy x-ray absoptiometry (DXA) scans at baseline (bone density) Thoracic and lumbar spine x-ray to rule out vertebral fracture in patients with kyphosis, historical height loss > 6cm, acute incapacitating back pain syndrome, and in patients 65 years and older Follow-up: DXA scans every 1-2 years
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Treatment “bone hygiene” measures: lifestyle modification that promotes bone health: Calcium 1000mg per day Vitamin D 800IU per day Smoking cessation modest alcohol intake (<2 units per day) Increase exercise activity
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Overweight and Obesity
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Excuses for Weight Gain Masarap kumain TamadBusy
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Ideal Body Weight 45.5 kg + 2.3 x (height in inches – 60) Example: 45.5 + 2.3 x (62 inches – 60) 45.5 + 2.3 x 2 45.5 + 4.6 = 50kg or 110 pounds Overweight > 121 pounds Obese > 132 pounds
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Body Mass Index (BMI) BMI = kg/m 2 Example: 141 pounds / 2.2 = 64kg 5’5” = 65 inches x 2.54 = 165 cm / 100 = 1.65 m x 1.65 m = 2.7 64/2.7 = 23.7 kg/m 2 Normal < 25 Overweight 25 to 29 Obese > 30
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Obesity and breast cancer Poor prognostic characteristics on diagnosis: larger tumor, grade III and more positive lymph nodes Poor prognosis: affects over-all survival and disease free survival Increased risk of contralateral breast cancer, loco-regional recurrence and other primary cancers
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Diet and Exercise Healthy Lifestyle: Five or more servings (dakot o sandok) of 5 different kinds of fruits and vegetable (VF) per day Physical activity (PA): Walking 30 minutes per day 6 days per week
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Healthy Lifestyle and Mortality High VF/high PA: 4.8% Low VF/high PA: 10.4% High VF/low PA: 10.7% Low VF/low PA: 11.5%
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10 year survival High VF/high PA = 93% Other groups: 86% to 87% Therefore, gain 6% to 7% absolute risk reduction in mortality at 10 years high VF/high PA Observed in both obese and non-obese
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Contra-lateral Breast cancer
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Incidence From 1975 through 2006: 339,790 diagnosed with (first) breast cancer 12,886 or 4% developed invasive breast cancer in the contra-lateral breast 40% occurred within the 1 st to 4 th year of the first breast cancer diagnosis 40% occurred within the 1 st to 4 th year of the first breast cancer diagnosis 30% between the 5 th to 9 th year 30% between the 5 th to 9 th year 30% 10 years or later 30% 10 years or later
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Age when first breast cancer was diagnosed 19% before age 45 51% between 45 and 64 years old 30% between 65 and 84 years old
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Estrogen receptor (ER) status when first breast cancer was diagnosed 60% were ER+ 24% were ER- 16% were unknown
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Estrogen Receptor in 2 nd breast cancer First ER+ breast cancer 67% were still ER+ 67% were still ER+ First ER- breast cancer 40% were ER+ 40% were ER+ 43% were ER- 43% were ER-
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Prophylactic mastectomy (PM) Majority not high risk and 13% were high risk (gene mutation) Low risk group: Contralateral breast cancer No PM (0.5%) PM 0% Low risk group: Distant metastasis No PM 7% (2 to 3 years) PM 4%
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Cardiac Complications from Irradiation Neurologic Complications
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Irradiation to the left breast: not associated with higher risk of cardiac death up to 20 years Cognitive and memory loss (chemo brain) resolves a few years after treatment
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Thank you!
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