Chapter 1IntroductionIn the United States, one in eight women will be diagnosed with breast cancer, accounting for 26% of all cancer cases in women (Jiao, 2014). The standard of care for women over the age of 40 is mammography. It has been shown to increase life expectancy by detecting breast cancer through a quick and easy x-ray. Magnetic resonance imaging, which is more sensitive to breast cancer is costlier and produces more false-positive results, therefore it is not used as often. When mammography is the only test being done, breast cancer is more likely to go undetected in patients with dense breasts and those with small lesions. In high-risk women, MRI has been shown to detect breast cancer in earlier stages than mammography. MRI screening is successfully reported between 77% and 91% (Jiao, 2014). Most detections from MRI are located within axillary lymph nodes during stage 1 breast cancer. A patient may simply refuse yearly mammograms, when she goes five years later breast cancer may be in the final stage whereas MRI couldve detected it years earlier. Women are recalled more often for additional diagnostic testing when screened less frequently and recalled less often when screened more frequently (Orel, 2005). The American Cancer Society recommends MRI testing for women with the BCRA1 & BCRA 2 genes or a lifetime risk of 20% or greater for breast cancer (Saslow, 2007). Women who inherit the BRCA1 or BRCA2 gene have a 45% to 65% chance of developing breast cancer (Plevritis, 2006). BRCA 1 gene carriers are at a greater risk for developing breast cancer at an aggressive pace. Tumors in women screened with mammography alone are larger and more likely to have metastasized to axillary nodes (Taneja, 2009). MRI is approximatelyten times more expensive than mammography making its cost effectiveness acritical consideration (Jiao, 2014). Due to its lower specificity thanmammography increased costs are related to biopsies and additional exams. Estimatedlifetime costs for 10,000 women would be higher by $10.6 million with MRI incombination with mammography than with mammography alone. In 2009, the costsbilled to Medicare for a bilateral mammography was $49.76 while a bilateral MRIwas $965.57 (Jiao, 2014). The price per quality adjusted life year would be$310,616 when MRI was performed with mammography (Fieg, 2009). MRI screening ismost cost effective if the cost of MRI decreased or the cost of mammographydecreased, when the risk of breast cancer increases, when mammography performanceworsens, and if greater quality of life is accomplished (Orel, 2005). MRIbecomes cost effective when patients with high-risk profiles are treated. Ifcancer was detected early enough, chemotherapy can be reduced. MRI is alsoneeded for surveillance when breast conserving therapy results in recurrences. MRIwould yield an additional 106 years of life per 10,000 women (Fieg, 2009). Womenwith BRCA1 and BRCA2 start mammograms at the age of 25 which makes MRI morecost effective and would decrease their radiation dose. Given the aggressivenature of breast cancer, screening with MRI whether alone or with mammographyis cost effective and will prolong life expectancy (Berg, 2012). Contrastenhanced MRI is proven to detect breast cancer in the earliest stages comparedto ultrasound and mammography. Statement of the Problem and Professional SignificanceIs MRI effectiveas screening tool for breast cancer? Which modality is the most effective studyfor diagnosing breast cancer? Are imaging modalities other than MRI a waste oftime and money for patients? Mammography is seen as the first step inpreventing breast cancer when a patient turns 40. For some patients, it mightalready be too late. Mammography is quick and low cost but does not detectbreast cancer in patients with dense breasts or small lesions. MRI isconsidered the gold standard in imaging but is used with fewer women. As thepopulation grows and rates of cancer increase, patients are demanding precisediagnosis and early detection for cancer. What factors should stand out todifferentiate who receives MRI vs. mammography? By gathering medical historyand diagnosis from several women receiving breast MRIs, data will be examinedto determine whether or not breast MRIs were needed for proper diagnosis andif testing detected further malignancies.Research Hypothesis1. It is hypothesized that MRI will be moreeffective in detecting breast abnormalities than Ultrasound or Mammography.This can be tested by comparing the results of their MRI with results ofprevious tests. 2. It is hypothesized that at least 50% of patientswill feel more confident regarding their diagnosis following a MRI scan. Thiscan be tested by having patients rank how they felt before and after having thetest and talking with a radiologist on staff (using a scale of 1-10). 3. It is hypothesized that patients willnot have had a mastectomy or received radiation until an MRI is performed. Bysurveying patients to determine who was and wasnt diagnosed prior to MRI andwhat measures they took to prevent the malignancy from spreading I candetermine these results. 4. It is hypothesized that patientspositive for breast cancer will have at least one lesion undetected onmammography or ultrasound because of its small size or position in the axillaryregion. This can be tested by comparingMRI test results with other imaging modalities. 5. It is hypothesized that 10% ofparticipants will have had inconclusive results. This can be determined bywhether the radiologist recommends a breast biopsy. MRI can producefalse-positives, which cause the radiologist to compare results with pastimaging.6. It is hypothesized that at least 50% ofthe participants were recommended to have an MRI after inconclusive testing inother modalities. This information will be obtained through obtaining previousmedical history in the survey.DefinitionsBreast cancer Uncontrolled growth of breast cells resulting in a malignant tumor (Medical Dictionary Online, 2018). Malignant Cancerous tumor that can spread to other parts of the body.Benign Tumor that is not dangerous to health. Quality adjusted life year Used to assess the value for money of medical intervention. One QALY = one year of perfect health (Science Direct Online, 2018). Probabilistic sensitivity analysis Technique used in economic modeling that allows the modellar to quantify the level of confidence in the output of the analysis (Science Direct Online, 2018).National comprehensive cancer network Not-for-profit alliance of leading cancer centers devoted to patient care, research, and education.BRCA 1 breast cancer type 1 susceptibility protein- Identified in 1990 and is on chromosome 17, increases likelihood of cervical, uterine, and colon cancer (National Cancer Institute, 2018). BRCA 2 breast cancer type 2 susceptibility protein- Identified in 1994 and is on chromosome 13-, increases likelihood of stomach cancer, gallbladder cancer, and melanoma (National Cancer Institute, 2018).Ultrasound Imaging test using high frequency sound waves.MRI Imaging test that used magnets to generate a detailed picture.Mammography Images produced from low dose radiation.Gadolinium Chemical element of atomic number 64, injected into patients as contrast during MRI. Ductal carcinoma in situ (DCIS) Presence of abnormal cells inside a milk duct in the breast (Medical Dictionary Online, 2018).Mastectomy Surgical operation to remove a breast.Stereotactic biopsy Procedure that uses mammography to precisely identify and sample an abnormality within the breast.Limitations and DelimitationsThis study willsurvey twenty women (all ages) who are scheduled for breast MRIs at GeisingerCommunity Medical Center during September-November 2018. I will conduct surveyswith the patient prior to their MRI. Breast MRIs will be conducted on a 1.5T,Siemens machine. All patients will be scanned using the same protocol forimaging regardless of medical history. External limitations are obtaining amedical history, incompletion of the patients MRI, lack of intravenous accessfor contrast, claustrophobia, and no show appointments. I will rely on patientsto give me a detailed, accurate medical history. AssumptionsDuring a typicalwork day in MRI at Geisinger Hospital a breast MRI is completed once. Within atypical month at least 20 scans are completed. This should allow me to surveyenough patients over a six-week period. Permission for this study will comefrom patients who allow me to ask questions regarding their medical history anddiagnosis. In accordance with HIPAA, I will keep all patient names andidentifying information anonymous. Chapter 2IntroductionThe purpose of this research project is to determine if MRI is effective as an imaging tool for diagnosing breast cancer. By surveying women, who have been diagnosed or are currently being diagnosed, collecting medical history, and analyzing data, imaging modalities will be examined to determine the most reliable, accurate, and timely way to diagnose breast cancer. If MRI is more efficient than mammography and ultrasound, time and money spent on those modalities could be eliminated. Women can be treated faster, and cancer could be diagnosed earlier when proper testing is ordered. Breast cancer during stage one is treatable, thousands of lives could be changed when it is diagnosed in a timely manner. Cancer is theoverall most common cause of death in America with breast cancer being the mostcommon type (Jiao, 2014). One in eight women will be diagnosed with breastcancer during their lifetime making it a very costly disease. Standard protocolsfor screening are determined by the American Cancer Society. Screeningmammography is recommended for women with a 25-30% lifetime risk of breastcancer (National Cancer Institute, 2018). This includes women treated forHodgkin disease and those with a family history of breast or ovarian cancer.Screening mammography typically starts at age 40 unless preexisting conditionsare present, screening begins at age 25. The Gail, Claus, and Tyrer-Cusickmodels are used to estimate breast cancer based on family history. Breastcancer genes 1 and 2 (BRCA) are found in 1/500-1/1,000 women. Women of Jewishethnicity have a 1/50 risk (National Cancer Institute, 2018). Those who testpositive have a 65% chance of breast cancer by 70 years old (Saslow, 2007). What are American Cancer Society Guidelines?Recommendations for women at averagerisk of breast cancer are women between40 and 44 have the option to start screening with a mammogram everyyear. Women ages 45 to 54 shouldget mammograms every year. Women 55 andolder can continue with mammograms every year or switch to havingmammograms every other year (American Cancer Society, 2018). Screening shouldcontinue as long as a woman is in good health and is expected to live 10 moreyears or longer. Not all types of breast cancer cause a lump in the breast.Many breast cancers are found on screening mammograms which can detect cancersat an earlier stage, before the mass can be felt, and before symptoms develop.Women who are at high risk for breast cancer based on certain factors shouldget and MRI and a mammogram everyyear, starting at age 30 (American Cancer Society, 2018). This includes womenwho have a lifetime risk of breast cancer of about 20% to 25% or greater, havea known BRCA1 or BRCA2 gene mutation, have a first-degree relative (parent,brother, sister, or child) with a BRCA1 or BRCA2 gene mutation, hadradiation therapy to the chest when they were between the ages of 10 and 30years, or have Li-Fraumeni syndrome, Cowden syndrome, or Bannayan-Riley-Ruvalcabasyndrome, or have first-degree relatives with one of these syndromes. (AmericanCancer Society, 2018). The American Cancer Society recommends against MRIscreening for women whose lifetime risk of breast cancer is less than 15%. MRIin this case would be less cost-effective and timelier for patients to getdone. How does MRI detect breast cancer? There are three imaging modalities that can effectively detect breast cancer. MRI, mammography, and ultrasound are commonly used in different combinations. MRI uses magnetic fields to produce cross-sectional images of breast tissue. Hydrogen atoms in fat and water contribute to the signal that is produced (Pilewskie, 2014). Gadolinium, IV based contrast, is administered to detect lesions and cancer. Subtraction images are obtained to differentiate fat from enhancing lesions. MRI produces high quality imaging from signal to noise ratio and high spatial resolution (Pilewskie, 2014). MRI is safe for all women (unless contraindicated by pregnancy) and doesnt use radiation. A drawback to MRI is false positives that are produced and additional testing that this creates. On the other hand, additional testing leads to a higher number of cancer detected. The more women who are being closely watched and recommended for further tests, the greater their likelihood of being diagnosed early. In a study in the UK involving high risk populations, 4% found MRI extremely distressing and 47% reported having disturbing thoughts about it six weeks after (Saslow, 2007). Due to the psychological distress of MRI, other testing needs to be considered. Imaging Limitations Unlike otherimaging tests, MRI candidates need to be screened for metal before consideringthe test. Pacemakers, aneurysm clips, specific stents and filters, andneuro-stimulators are not allowed in the machine. Body habitus andclaustrophobia are also factors to consider. A small, loud environment cancause emotional distress and anxiety for a patient, some patients will refuseMRI testing. Breast MRI testing should be completed with and without contrast.Gadolinium, MRI contrast, can only be injected in patients with a glomerularfiltration rate of >60. Patients on dialysis, with impaired kidney function,diabetes, high blood pressure, or certain allergies may not be able to receivecontrast, making the test inconclusive. MRI results canalso be misleading. False-negatives and false-positives occur from technicallimitations, patient characteristics, quality assurance failures, human error,and heightened medical concern. A false negative exam looks normal even thoughthe patient has breast cancer. They are more likely to occur in youngerpatients with dense breasts. MRI is commonly used for dense tissue todifferentiate benign and malignant lumps. A false positive test looks abnormaleven though the patient doesnt have cancer. False positives occur in half ofwomen getting mammograms over a ten-year period (Gillman, 2014). MRIs and MRIguided biopsies are usually recommended for more accurate diagnosis. A patientsneed for definitive findings may increase testing ordered. According to theAmerican Medical Association, 7% of women are biopsied only because of MRIfindings. The call back and biopsy rates of MRI are higher than mammography inhigh risk populations due to the increased sensitivity of MRI (Gillman, 2014).MRI is also able to obtain images for women with breast implants. 3D and 2Dimages are acquired in all planes, whereas mammography could miss an area ofinterest and compromise the breast implant. Economic Impact Cancer treatment can be impacted by lack of insurance, proximity to health care facilities, and availability of services. According to Cancer Facts & Figures 2018, Uninsured patients and those from many ethnic minority groups are substantially more likely to be diagnosed with cancer at a later stage, when treatment can be more extensive, costlier, and less successful. (American Cancer Society 2018). Without routine mammograms, breast cancer can go undiagnosed and impose much higher costs when its found in a later stage. Early detection can potentially eliminate radiation, chemotherapy, mastectomy, and breast reconstruction. In 2009, the average Medicare reimbursement for a bilateral mammogram was $49.76, a bilateral MRI $965.57, and mastectomy $13,590.03 (Moore, 2009). These procedures drastically differ in costs therefore insurance companies use cost effectiveness and quantity adjusted life years as means in determining which patient will benefit from costlier studies. MRI screening becomes more cost effective as the cost of MRI decreases or the cost of mammography increases. It is also more cost effective for patients with higher risk profiles such as BRCA1 & BRCA2 genes. MRI combined with mammography would produce 106 years of life per 10,000 women compared with mammography alone (Taneja, 2009). The drawback is that MRI in addition to mammography would increase lifetime health care costs for those 10,000 women by $10,600,000 (Taneja, 2009). What does insurance cover?Breast cancer isthe costliest cancer to treat. In 2010, it cost $16.5 billion in the UnitedStates to treat breast cancer. A major concern when ordering breast MRIs isthat insurance will deny it or charge a high co-pay. MRIs cost more due toradiologist, facility, contrast, and technology fees. According to a survey bythe American Cancer Society, many patients are cutting prescriptions, not goingto their doctor, and not getting preventive services due to the high costs.Yearly mammograms are covered by insurance companies. The average cost of a breast MRI in the United States is$1,325 with prices ranging from $375 to $2,850. Patients with health insurance are responsible for payingtheir deductible, copay, and coinsurance amounts. The amount of each of thesecosts depends on their health plan. Patients without health insurance areresponsible for 100% of mammogram and MRI costs. Case StudyIn a study published by the New England Journal of Medicine, titled MRI evaluation of the Contralateral Breast in Women with Recently Diagnosed Breast Cancer, 969 women with a diagnosis of unilateral breast cancer and no abnormalities on mammography went for a breast MRI. MRI detected clinically occult breast cancer in the contralateral breast tissue in 30 women (Lehman, 2007). Biopsies were performed on 121 of the 969 women whose MRI showed breast cancer (Lehman, 2007). Of those 121, 30 were tested positive. MRI was able to detect cancer that was missed by mammography and clinical exam. Within the 969 women, 33 tumors were diagnosed with 30 being from MRI. The three others were diagnosed from a mastectomy specimen before a biopsy could be performed. Those three samples contained ductal carcinomas in situ and measured 1, 3, and 4 mm in diameter. The most common types of invasive cancer found on MRI was ducal carcinoma (67%), invasive lobular carcinoma (22%), and tubular carcinoma (Lehman, 2007). 96.7% of cancer found was stage 0 or 1. The overall high accuracy of MRI is due to technology and interpretation of results. Contrast enhanced MRI aids in distinguishing benign from malignant patterns. This study also showed that screening MRI can improve on mammography by detecting cancer in women at high risk especially those with aggressive cancers. When ordering MRI, cost effectiveness continues to be a major concern. In the article, American Cancer Society Guidelines for Breast Screening with MRI as an Adjunct to Mammography, benefits of MRIs sensitivity in detecting lesions is noted but without data on the recurrence and survival rates, MRI is not recommended as a screening exam. The article compares study results from six published studies, sensitivity for MRI is consistently higher than mammogram and ultrasound while specificity was lower than mammogram and ultrasound. High sensitivity means MRI correctly identifies a patient with cancer. Low specificity means MRI is not able to correctly reject a patient without cancer as accurately as other modalities. MRI has higher error but in calling back more patients and performing more biopsies, it diagnoses cancer more accurately. With this being said, the article does not recommend MRI as a screening tool unless women are at an increased risk of breast cancer, have a family history, or carry the BRCA gene (Stephens, 2011).ConclusionWomen whopresent with signs and symptoms of breast cancer or have a family historyshould be screened with MRI in addition to mammography. It is not acceptable todeny patients imaging studies that can prolong their life. Breast cancer is100% treatable when caught early. Due to advances in technology and a growinghealthcare system, facilities are more readily available to treat women.Patients no longer need to wait months for tests or results. Steps should betaken to reduce anxiety associated with MRI cancer screening and wait time.Patients should be informed about the likelihood of false-negative andfalse-positive findings. Whether or not patients need to go through additionalimaging, the chance of early detection outweighs the stress of additional testing.MRI is a very useful imaging test that can save lives if performed. Patientswho want to be proactive in their treatment should be encouraged to get routineimaging tests done and educate themselves on different stages of breast cancer,so they understand the process they are going through. By creating highresolution imaging, MRI proves to be the most effective study for diagnosingbreast cancer. MRI is able to detect smaller masses and abnormalities thanother imaging tests miss. Utilization of MRI is crucial for early detection,with its results breast cancer can be highly treatable and late stages alongwith metastases can be stopped. MRI used in screening for women with high riskfactors proves more cost effective than mammography and ultrasound because itdetects cancer in earlier stages which reduces the need for more invasive, longterm care. MRI is also able to cover a larger area including axillary lymphnodes where cancer is commonly missed on mammograms. References: Jiao, X., & Hay, J. (2014). Cost-Effectiveness Of BreastMri And Mammography For Screening HighRisk Population. Value in Health,17(3).doi:10.1016/j.jval.2014.03.780Orel, S. (2005). 110 Efficacy of MRI and Mammography forBreast-Cancer Screening in WomenWith a Familial or Genetic Predisposition. Breast Diseases: A Year Book Quarterly,16(1),37-38. doi:10.1016/s1043-321x(05)80023-2Saslow, D., Boetes, C., Burke, W., Harms, S., Leach, M. O.,Lehman, C. D., . . . Russell, C. A. (2007).American Cancer Society Guidelines for Breast Screening with MRI as an Adjunct to Mammography. CA:A Cancer Journal for Clinicians,57(2), 75-89. doi:10.3322/canjclin.57.2.75Feig, S. (2009). Cost Effectiveness of Breast CancerScreening With Contrast-Enhanced MRI in High-RiskWomen. Breast Diseases: A Year Book Quarterly,20(4), 383-385. doi:10.1016/s1043-321x(09)79390-7Berg WA, Zhang Z, Lehrer D, et al. Detection of Breast Cancer With Addition of Annual Screening Ultrasound or a Single Screening MRI to Mammography in Women With Elevated Breast Cancer Risk. JAMA.2012;307(13):13941404. doi:10.1001/jama.2012.388NationalCancer Institute. (2018). Retrieved August 31,2018, from National CancerInstitute https://www.cancer.gov/about-cancer/causes-prevention/genetics/brca-fact-sheet#q1MedicalDictionary Online. (2018). Retrieved August 31,2018, from Medical DictionaryOnline: https://medical-dictionary.thefreedictionary.com/breast+cancerMedical Dictionary Online. (2018). Retrieved August 31,2018, from Medical Dictionary Online: https://medical-dictionary.thefreedictionary.com/carcinomaElsevierOnline. (2018). Retrieved August 31,2018, from Science Direct Online: https://www.sciencedirect.com/search?qs=QALY&show=25&sortBy=relevanceElsevierOnline. (2018). Retrieved August 31,2018, from Science Direct Online: https://www.sciencedirect.com/science/article/pii/0010480986900200National Comprehensive Cancer Network: Practice Guidelines inOncology Genetic/Familial High-RiskAssessment: Breast and Ovarian. 2005, National Comprehensive Cancer Network, Inc, 1.Jemal A, Siegel R, Ward E, Hao Y, Xu J, Murray T, Thun MJ: Cancer Statistics, 2008. CA Cancer J Clin. 2008, 58: 71-96. 10.3322/CA.2007.0010.Information and Resources about for Cancer: Breast, Colon,Lung, Prostate, Skin. (n.d.). RetrievedSeptember 18, 2018, from https://www.cancer.org/Ali, K., & Vinnicombe, S. (2018). Accuracy of contrast enhanced breast tomosynthesis in patients suspected of having breast cancer: Comparison with digital mammography and breast MRI. Http://isrctn.com/. doi:10.1186/isrctn12691785Gillman, J., Toth, H. K., & Moy, L. (2014). The Role of Dynamic Contrast-Enhanced Screening Breast MRI in Populations at Increased Risk for Breast Cancer. Womens Health,10(6), 609-622. doi:10.2217/whe.14.61Pilewskie, M., & King, T. A. (2014). Magnetic resonance imaging in patients with newly diagnosed breast cancer: A review of the literature. Cancer,120(14), 2080-2089. doi:10.1002/cncr.28700Heil, J., Czink, E., Schipp, A., Sohn, C., Junkermann, H., & Golatta, M. (2012). Detected, yet not Diagnosed Breast Cancer Screening with MRI Mammography in High-Risk Women. Breast Care,7(3), 236-239. doi:10.1159/000339688Lehman, C. D. (2007, March 29). MRI Evaluation of the Contralateral Breast in Women with Recently Diagnosed Breast Cancer. Retrieved September 19, 2018, from http://www.nejm.org/Stephens, T. (2011). Breast Cancer Screening With Imaging: Recommendations From the Society of Breast Imaging and the ACR on the Use of Mammography, Breast MRI, Breast Ultrasound, and Other Technologies for the Detection of Clinically Occult Breast Cancer. Yearbook of Diagnostic Radiology, 2011, 46-47. doi:10.1016/s0098-1672(10)79236-5Plevritis, S. K., Kurian, A. W., Sigal, B. M., Daniel, B. L., Ikeda, D. M., Stockdale, F. E., & Garber, A. M. (2006). Cost-effectiveness of Screening BRCA1/2 Mutation Carriers With Breast Magnetic Resonance Imaging. Jama,295(20), 2374. doi:10.1001/jama.295.20.2374Taneja, C., Edelsberg, J., Weycker, D., Guo, A., Oster, G., & Weinreb, J. (2009). Cost Effectiveness of Breast Cancer Screening With Contrast-Enhanced MRI in High-Risk Women. Journal of the American College of Radiology,6(3), 171-179. doi:10.1016/j.jacr.2008.10.003Moore, S. G., Shenoy, P. J., Fanucchi, L., Tumeh, J. W., & Flowers, C. R. (2009). Cost- effectiveness of MRI compared to mammography for breast cancer screening in a high risk population. BMC Health Services Research,9(1). doi:10.1186/1472-6963-9-9Get Help With Your EssayIf you need assistance with writing your essay, our professional essay writing service is here to help!Find out more
Recent Comments