updates in breast cancer
TRANSCRIPT
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UPDATES IN BREAST CANCER
Ingrid Lizarraga MBBSDept of Surgery
Annual Refresher Course for the Family PractitionerApril 2021
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I HAVE NOTHING TO DISCLOSE
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OBJECTIVES
• Discuss trends in breast cancer incidence and mortality
• Identify new methods of risk assessment, screening and detection
• Discuss changes in breast cancer management
• Discuss breast cancer survivorship and the role of the primary care physician
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BREAST CANCER IN 2021
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Source: Cancer Facts & Figures 2020, American Cancer Society (ACS), Atlanta, Georgia, 2020.
Top 12 most common cancer sites in United States (overall incidence)
Top eight cancer sites (death)
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BREAST CANCER: NATIONAL TRENDS IN
INCIDENCE AND DEATH RATES
Trends in Death rates from breast cancer (female), 1930-2017
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PERCENT OF CASES & 5-YEAR RELATIVE SURVIVAL BY STAGE AT
DIAGNOSIS: FEMALE BREAST CANCER
Percent of Cases by Stage 5-Year Relative Survival
SEER 18 2010–2016, All Races, Females by SEER Summary Stage 2000
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BREAST CANCER INCIDENCE BY RACE AND ETHNICITY
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FEMALE BREAST CANCER:AGE ADJUSTED DEATH RATE PER 100,000 WOMEN
BY RACE/ETHNICITY
Source: U.S. Mortality, Age-Adjusted Rate per 100,000; Surveillance Epidemiology and End Results Program
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RISK ASSESSMENT AND SCREENING
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JAMA, 2019
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Previous breast biopsiesLobular carcinoma in situAtypical ductal hyperplasiaAtypical lobular hyperplasia
Prior chest irradiation
Prior breast cancer
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MODIFIED GAIL MODEL RISK ASSESSMENT TOOL
HTTP://BRCA.NCI.NIH.GOV/BRC
6 breast cancer risk factors
• Age
• hormonal or reproductive history (age at menarche and age at first live birth)
• previous history of breast disease (number of breast biopsies and history of atypical hyperplasia)
• family history (number of first-degree relatives with breast cancer).
High risk ≥ 20% lifetime risk or ≥ 1.7% 5 yr risk
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TY RER-CUZICK MODEL HT T PS : / / I B I S . IKONOPED IA .COM /
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NEW SCREENING MODALITIES
Abbreviated breast MRI
Shorter protocol, fewer images and faster turnover than standard MRI
Contrast enhanced mammography
Mostly for diagnostic purposes
Beneficial for screening in women with dense breasts who do not qualify for MRI
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BREAST CANCER MANAGEMENT
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TREATMENT ALGORITHM CIRCA 2007
Breast cancer diagnosis Surgery
Breast :Mastectomy vs Lumpectomy
Chemotherapybased on clinicopath factors
+/- Radiation
Endocrine Therapy if ER+
Lymph nodes
Sentinel lymph node biopsy
Axillary dissection
Chemotherapyif inoperable
Clinically node negative
Clinically node positive
Positive SLN
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BREAST CANCER – IT’S NOT ONE DISEASE
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PROGNOSIS BY SUBTYPE
Overall and relapse-free survival analysis of the 49 breast cancer patients, uniformly treated in a prospective study, based on gene expression classification.
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PERCENT OF FEMALE BREAST CASES BY CANCER SUBTYPE
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TREATMENT ALGORITHM CIRCA 2020
Breast cancer diagnosis
Surgery
Breast :Mastectomy vs Lumpectomy+/- reconstruction
Chemotherapybased on genomic testing
+/- Radiation
Endocrine Therapy if ER+
Lymph nodes
Sentinel lymph node biopsy
Axillary dissection
Chemotherapyif ER- or HER2+
or node positive or high genomic risk
Positive SLN, high burden
Endocrine therapy
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MULTIDISCIPLINARY CANCER CARE
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TREATMENT TRENDS FOR STAGE 1-3 BREAST CANCER
Surgery
Oncoplastic surgeryImage guided surgery
Better breast reconstructionLess lymph node surgery
Surgery to correct lymphedema
Medical Oncology
Increased use of neoadjuvant chemotherapy (NAC)
Increased tailoring of therapy using genomic testing and response to NAC
Radiation oncology
Omission of radiation in low-risk subgroupsHypofractionation
Partial breast radiationIncreased post mastectomy radiation
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DUCTAL CARCINOMA IN SITU
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STAGE 4 BREAST CANCER
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IMPROVED SURVIVAL IN STAGE 4 BREAST CANCER
Casswell-Jin et al. JNCI Cancer Spectr. 2018
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SURVIVORSHIP
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“Primary care clinicians should counsel patients about the importance of maintaining a healthy lifestyle, monitor for post treatment symptoms that can adversely affect quality of life, and monitor for adherence to endocrine therapy…..
Recommendations on surveillance for breast cancer recurrence, screening for secondprimary cancers, assessment and management of physical and psychosocial long-term and late effects of breast cancer and its treatment, health promotion, and care coordination/practice implications are made.
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GUIDELINES
• F/u q 3-6 months until 2 years, then annual
• Annual mammography, but no routine labs
• Monitor compliance with antiestrogen therapy
• Update family history and refer for genetic testing as appropriate
• Promote healthy behavior
• Weight control – obesity associated with increase risk of recurrence
• Smoking cessation – higher risk of complications from breast radiation
• Monitor bone health
• postmenopausal breast cancer survivors need a baseline DEXA scan + repeat DEXA scans every 2 y for women taking an aromatase inhibitor, premenopausal women taking tamoxifen and/or a GnRH agonist, and women who have chemotherapy-induced premature menopause
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GUIDELINES
Monitor for sequelae of treatment:
• Lymphedema
• Neuropathy – after chemotherapy most commonly
• Cardiac disease – from chemotherapy (adriamycin) and radiation
• Shoulder morbidity
• Cognitive impairment – ‘chemobrain’
• Depression, anxiety
• Body image issues
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IOM: SURVIVORSHIP CARE PLAN
• Summarize critical information needed for the survivor’s long-term care:
• Cancer type, treatments received, and their potential consequences;
• Specific information about the timing and content of recommended follow-up;
• Recommendations regarding preventative practices and how to maintain health and well-being;
• Information on legal protections regarding employment and access to health insurance;
• The availability of psychosocial services in the community
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BREAST IMPLANT ASSOCIATED ANAPLASTIC LARGE CELL
LYMPHOMA (BIA-ALCL)
• Rare form of lymphoma associated with texture implants
• Common symptoms include breast enlargement, pain, asymmetry, breast or axillary mass, skin changes, hardening of the breast, or a large fluid collection typically developing at least more than one year after receiving an implant, and on average after 8 to 10 years
• Work up includes breast MRI and aspiration of peri-implant fluid
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THANK YOU AND QUESTIONS?
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APPENDIX
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CHANGES IN SYSTEMIC THERAPY
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INCREASED USE OF NEOADJUVANT CHEMOTHERAPY
Associations between pathological complete response and event-free survival and overall survival
Cortazar, Lancet 2016Response to neoadjuvant chemotherapy is predictive of outcome
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WHO NEEDS CHEMOTHERAPY? INDIVIDUALIZED RISK ASSESSMENT FOR
ER POSITIVE TUMORS
Genomic tumor testing to predict benefit of chemotherapy in ER positive patients
• Oncotype
• Mammaprint
Tools often used to decide chemotherapy or not for node negative and early node positive ER+ cancer
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CHANGES IN RADIATION THERAPY
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BREAST RADIATION
• Standard (6 weeks)
• Hypofractionated (3 weeks)
• Catheter based
• External beam
• Intraoperative radiation
WHOLE BREAST RADIATION PARTIAL BREAST RADIATION
Decreases risk of local recurrence from 26% to 7% at 5 yrs.
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CHANGES IN SURGICAL THERAPY
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SURGICAL TRENDS
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BREAST RECONSTRUCTION IN THE UNITED STATES
Fig. 1 . Immediate breast reconstruction rate and reconstructive method in the United States from 1998 to 2008.
Alboroz et al.Plast Reconstr Surg. 2013
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MASTECTOMY AND RECONSTRUCTION
Before After
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AXILLARY LYMPH NODE DISSECTION
Removal of all axillary lymph nodes (in patients with cancer in nodes)
20% or higher risk of lymphedema
Recent clinical trials support omission of ALND in several clinical scenarios
Srour et al Ann Surg Onc, 2019
Model estimates in trends of ALND from 2012 to 2015 by facility type
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TECHNIQUES TO DECREASE RISK OF LYMPHEDEMA
• Surgical technique• Axillary reverse mapping
(ARM)• Lymphatic Microsurgical
Preventing Healing Approach (LYMPHA) in high risk patients
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DE-ESCALATION OF SURGERY
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RADIATION IN WOMEN 70 YEARS AND OLDER
Lumpectomy Plus Tamoxifen With or Without Irradiation in Women Age 70 Years or Older With Early Breast Cancer: Long-Term Follow-Up of CALGB 9343
Hughes et al, JCO 2013