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    • Don't ignore...

    Don't ignore incidental findings on MRIs, it may be cancer : BMJ study

    Written by Hina Zahid Published On 2018-12-10T20:20:56+05:30  |  Updated On 11 Aug 2021 5:13 PM IST

    A BMJ study urges against ignoring incidental findings on MRIs, as it may be cancer. These incidental findings are also known as incidentalomas. The study finds that the prevalence of incidentalomas varied substantially depending on the type of scan.


    For example, there were potentially serious incidental findings with 1.4 per cent of brain MRIs, 1.3 per cent of chest scans and 1.9 per cent of abdominal MRIs.


    About half of the potentially serious incidental findings were suspected malignancies.


    Only about one in five of these incidental findings turned out to lead to a serious diagnosis after additional tests or procedures.


    Researchers focused on what they called "potentially serious incidental findings," that is, accidentally discovered abnormalities that aren't related to the symptoms that led a doctor to order the test and that may be serious. For example, a chest X-ray to look for pneumonia reveals an unexpected spot on the lung that may or may not be cancer.


    Unexpected abnormalities are turning up more often as more people get high-resolution scans that can spot irregularities that once went undetected.


    Overall, about 4 per cent of people had potentially serious incidental findings, the study team reports in The BMJ. This jumped to almost 13 per cent when researchers also included incidental findings of uncertain potential seriousness.


    Patients should "consider how they feel about the chances of a potentially serious incidental finding being detected, and that if such a finding is detected, that they may have to undergo more tests (some of which may be uncomfortable or even have some associated risk) before reaching a final diagnosis, and that most findings may not, in the end, turn out to be anything serious," said senior study author Dr. Cathie Sudlow of the University of Edinburgh in the UK.


    "For patients, it is difficult to know at the outset of the diagnostic journey whether or not the tests being performed are unnecessary," Sudlow said by email. "We can only make this judgment in retrospect."


    For the current study, researchers analyzed data from 32 previously published studies that looked at the potential for serious incidental findings in more than 27,000 patients who had MRIs.


    One limitation of the study is that researchers lacked long-term data on patients to determine if any of the potentially serious incidental findings might turn out to be precursors of tumours discovered years later, the authors note.


    However, previous research suggests that 9 in 10 incidental findings aren't serious after follow-up, Sudlow said.


    "With the advancement of imaging technology, our sophisticated scans are now capable of identifying lesions that are either non-cancerous or will never grow to cause a patient harm in their lifetime," said Dr Jack O'Sullivan, a researcher at Stanford University in California who wasn't involved in the study.


    "The discovery of a cancerous lesion that would benefit from appropriate treatment is a clear benefit of incidental findings," O'Sullivan said by email. "The harms are related to potentially unnecessary anxiety, further testing, and treatment of a lesion that will never grow to harm them."


    When patients are told they have an incidental finding after an MRI, they should ask their doctor what the odds are that the abnormal tissue would be harmful to their health, what side effects might result from any tests or treatments, and what happens if they do nothing to find out if the finding is actually cancer, O'Sullivan advised.


    "This is a very personal decision," Sudlow said, "People's opinions vary widely on what they would want to do."


    The advancement in imaging technology shall be certainly able to identify lesions which are of serious consequence.T herefore due credence needs to be given to incidental findings on the scans.

    For more details click on the link: doi: https://doi.org/10.1136/bmj.k4577
    cancerDr Cathie SudlowDr Jack O’Sullivanfindingsincidentalincidentalomasmagnetic resonance imagingmalignancyMRIspotentially seriouspotentially serious incidental findingsThe BMJUniversity of EdinburghX ray
    Source : With inputs from BMJ

    Disclaimer: This site is primarily intended for healthcare professionals. Any content/information on this website does not replace the advice of medical and/or health professionals and should not be construed as medical/diagnostic advice/endorsement or prescription. Use of this site is subject to our terms of use, privacy policy, advertisement policy. © 2020 Minerva Medical Treatment Pvt Ltd

    Hina Zahid
    Hina Zahid
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