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Most cancer diagnoses are made based on images. You have to see a tumor, or compare images of it over time, to determine its level of threat. Ultrasounds, MRIs, and X-rays are all common types of images that radiologists use to collect information about a patient and perhaps cause a doctor to recommend a biopsy. Once that section of the tumor is under the microscope, pathologists learn more about the tumorit. To gather even more information, a doctor may run order a genetic test and determine , which shows that the patient has a genetic anomaly. This genetic anomaly may be something that researchers have already matched, or may match in the future, with an effective therapy, thanks to recent advances in precision medicine.

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