As others have said - perform more tests. I've worked around molecular pathology testing for cancer (which comes up with a diagnosis based on data analysis afte

As others have said - perform more tests. I've worked around molecular pathology testing for cancer (which comes up with a diagnosis based on data analysis after running DNA or RNA sequencing). If the molecular report differs from what the surgical pathologist saw when looking under the microscope, it's typically not 'it's cancer' vs 'it is not cancer', but more 'this is molecularly non-small cell lung cancer' vs 'this appears to be prostate cancer'. So what will happen is they'll do more staining on the sample, specific to what the molecular report came out with - and a lot of times - bam. That tumor in someone's prostate is actually lung cancer and needs to be treated that way.