Unselected Patients

We use ultrasound a lot. Sometimes we find things that are not clearly related to the reason the patient came in. The prevalence of these incidental findings relates to the usefulness of the diagnostic test. These authors take the bull by the horns, randomly whole-body-POCUS scanning emergency department patients to see what sort of findings might pop up. But should disease prevalence change our use of the tool? https://www.ncbi.nlm.nih.gov/pubmed/30587153