I have a stethoscope modification. It's a little device that goes right into the tubing. It's primary use is an amplifier to make it easier to hear quiet sounds.

It looks perfectly normal other than the bulge.

It uses Bluetooth to transfer recordings to my phone.

But the stethoscope works normally otherwise you probably wouldn't notice unless you knew what you were looking for.

Of course my software is not that fancy it doesn't diagnose.

I'm also not a doctor. So you don't have to worry about me.