Arguably the most interesting item I bookmarked during my blogcation, as reported by the New England Journal of Medicine -
A 65-year-old man who had previously undergone bilateral hip arthroplasty presented with a dislocated hip after a fall. When a handheld Doppler device used to assess the pulses in his feet was placed on the dorsalis pedis, it picked up music in addition to the pulse, as shown in a video.
The article at the link was outside the paywall initially; I don't know whether it will remain so. In the audio at the gif, the music is clearly a broadcast by a radio station. The staff at the hospital tried using other Dopplers, all of which gave the same result, so it was not a Doppler malfunction. They then checked other patients' pulses, but heard no music, so the phenomenon appears to be somehow caused by this patient's prosthesis. I like when they pan the camera to show him smiling about everything at the end.
Addendum: The app Shazam identified the music in the gif as “Gracias Por Tu Amor” by Banda El Recodo De Cruz Lizárraga.