Tumors constantly shed DNA from dying cells, which briefly circulates in the patient’s bloodstream before it is quickly broken down. Many companies have created blood tests that can pick out this tumor DNA, potentially helping doctors diagnose or monitor cancer or choose a treatment.
Opinion | POCUS and Malpractice: Separating Fact From Fear
Joshua Guttman, MD, is an associate professor of emergency medicine. A frequent concern among clinicians new to point-of-care ultrasound (POCUS) is the risk of malpractice.